10-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-K

T  ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended:  December 31, 2011 or

£  TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from ________________ to ________________

Commission file number:  0-25426

NATIONAL INSTRUMENTS CORPORATION

(Exact name of registrant as specified in its charter)

Delaware	74-1871327
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification Number)
11500 North MoPac Expressway Austin, Texas	78759
(address of principal executive offices)	(zip code)

Registrant's telephone number, including area code:  (512) 338-9119

Securities registered pursuant to Section 12(b) of the Act:

Title of Each Class	Name of Each Exchange on Which Registered
Common Stock, $0.01 par value	The NASDAQ Stock Market, LLC

Securities registered pursuant to Section 12(g) of the Act:

Preferred Stock Purchase Rights

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.  Yes x  No o

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.  Yes o No x

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.  Yes x  No o

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).  Yes x  No o

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K (§229.405 of this chapter) is not contained herein, and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K. o

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer or a smaller reporting company. See the definitions of “large accelerated filer”, “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. (Check one):

Large accelerated filer  x                                          Accelerated filer    o                                Non-accelerated filer     o                                  Smaller reporting company     o

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act).  Yes o No x

The aggregate market value of voting and non-voting common equity held by non-affiliates of the registrant at the close of business on June 30, 2011, was $2,326,245,669 based upon the last sales price reported for such date on the NASDAQ Stock Market. For purposes of this disclosure, shares of Common Stock held by persons who hold more than 5% of the outstanding shares of Common Stock and shares held by officers and directors of the registrant as of June 30, 2011, have been excluded in that such persons may be deemed to be affiliates. This determination is not necessarily conclusive.

At the close of business on February 2, 2012, registrant had outstanding 120,678,169 shares of Common Stock.

Form 10-K For the Fiscal Year Ended December 31, 2011 TABLE OF CONTENTS
PART I
Item 1.	Business
Item 1A.	Risk Factors
Item 1B.	Unresolved Staff Comments
Item 2.	Properties
Item 3.	Legal Proceedings
Item 4.	Reserved
PART II
Item 5.	Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities
Item 6.	Selected Financial Data
Item 7.	Management’s Discussion and Analysis of Financial Condition and Results of Operations
Item 7A.	Quantitative and Qualitative Disclosures About Market Risk
Item 8.	Financial Statements and Supplementary Data
Item 9.	Changes in and Disagreements With Accountants on Accounting and Financial Disclosure
Item 9A.	Controls and Procedures
Item 9B.	Other Information
PART III
Item 10.	Directors, Executive Officers and Corporate Governance
Item 11.	Executive Compensation
Item 12.	Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters
Item 13.	Certain Relationships and Related Transactions, and Director Independence
Item 14.	Principal Accounting Fees and Services
PART IV
Item 15.	Exhibits, Financial Statement Schedules

DOCUMENTS INCORPORATED BY REFERENCE

Part III incorporates certain information by reference from the definitive proxy statement to be filed by the registrant for its Annual Meeting of Stockholders to be held on May 8, 2012 (the “Proxy Statement”).

PART I

This Form 10-K contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. Any statements contained herein regarding our future financial performance or operations (including, without limitation, statements to the effect that we “believe,” “expect,” “plan,” “may,” “will,” “project,” “continue,” or “estimate” or other variations thereof or comparable terminology or the negative thereof) should be considered forward-looking statements. Actual results could differ materially from those projected in the forward-looking statements as a result of a number of important factors including those set forth under the heading “Risk Factors” beginning on page 11, and elsewhere in this Form 10-K. Although we believe that the expectations reflected in the forward-looking statements are reasonable, we cannot guarantee future results, levels of activity, performance or achievements. You should not place undue reliance on these forward-looking statements. We disclaim any obligation to update information contained in any forward-looking statement.

ITEM 1.                 BUSINESS

National Instruments Corporation (“NI”, “we”, “us” or “our”) designs, manufactures and sells tools to engineers and scientists that accelerate productivity, innovation and discovery. Our graphical system design approach to engineering provides an integrated software and hardware platform that speeds the development of systems needing measurement and control. We believe our long-term vision and focus on technology supports the success of our customers, employees, suppliers and shareholders.

We are based in Austin, Texas and were incorporated under the laws of the State of Texas in May 1976 and were reincorporated in Delaware in June 1994. On March 13, 1995, we completed an initial public offering of our common stock. Our common stock, $0.01 par value, is quoted on the NASDAQ Stock Market under the trading symbol NATI.

Our Internet website address is http://www.ni.com. Our annual report on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K and amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T are available through our Internet website as soon as reasonably practicable after we electronically file such materials with, or furnish them to, the SEC, or upon written request without charge. Our Internet website and the information contained therein or connected thereto are not intended to be incorporated into this Annual Report on Form 10-K.

Industry Background

Engineers and scientists use instruments to observe, understand and manage the real-world phenomena, events and processes related to their industries or areas of expertise. Instruments measure and control electrical signals, such as voltage, current and power, as well as temperature, pressure, speed, flow, volume, torque and vibration. Common general-purpose instruments include voltmeters, signal generators, oscilloscopes, data loggers, spectrum analyzers, cameras, and temperature and pressure monitors and controllers. Some traditional instruments are also highly application-specific, designed with fixed functionality to measure specific signals for particular vertical industries or applications. Instruments used for industrial automation applications include data loggers, strip chart recorders, programmable logic controllers (“PLCs”), and proprietary turn-key devices and/or systems designed to automate specific vertical applications.

Measurement and automation applications can be generally categorized as test and measurement (“T&M”) or industrial/embedded (“IE”). T&M applications are used to research, design, manufacture and service a wide variety of products before they go to market. IE applications are used to design, prototype and deploy machinery to produce and distribute a wide variety of products and materials.

Historically, engineers and scientists have used a variety of cost-prohibitive instruments and systems that operated independently and could be difficult to customize. Due to the limitations of these systems, adapting them to changing needs can be expensive and time-consuming, and users must often purchase multiple single-purpose instruments.

Our Approach to Measurement and Automation

National Instruments provides engineers and scientists with an integrated software and hardware platform that accelerates the design and implementation of systems that need measurement and control. Our customers use our platform to develop test, measurement, control and embedded systems throughout industry from design to production; in advanced research; and in teaching engineering and science.

Reconfigurable Platform for System Design.  Our graphical system design platform integrates fundamental elements of engineering in software and hardware, giving scientists and engineers the essential elements to create and customize systems that need measurement and control. Users can scale from design to test, from small to large systems, reusing the tools and our flexible platform of Graphical System Design.

Accelerate Development.  Users accelerate their development by using our highly productive LabVIEW software that integrates and abstracts the complexity of systems at multiple levels, including unprecedented visualization of system timing.  The NI graphical system design platform can lower total systems cost, increase flexibility, and integrate new technology using off-the-shelf customizable hardware that meets system needs from low power to high performance.

Innovate Rapidly.  The NI graphical system design platform gives customers the power to innovate rapidly. The flexibility and scalability of the platform, supported by a growing ecosystem of reusable intellectual property (“IP”) and applications, gives users a strong competitive advantage in completing more projects with less time and resources. Tens of thousands of engineers successfully use the NI graphical system design platform today to innovate, discover, and invent their own solutions.

Compared with traditional solutions, we believe our products and our graphical system design platform provides the following significant benefits to our customers:

Performance and Efficiency

Our software brings the power of commercial computers, handheld devices, networks and the Internet to instrumentation and embedded devices. With features such as graphical programming, automatic code generation, graphical tools libraries, ready-to-use example programs, libraries of specific instrumentation functions, and the ability to deploy applications on a range of platforms, scientists and engineers can quickly build a system that meets individual application needs. Because the continuous performance improvement of personal computers (“PC”), Field Programmable Gate Arrays (“FPGA”) and networking technologies are the core platforms for our approach, scientists and engineers can quickly realize direct performance benefits,  faster execution for measurement and automation applications, shorter test times, faster automation, higher performing embedded systems and higher manufacturing throughput.

Modularity, Reusability and Reconfigurability

Our products include reusable hardware and software modules to provide considerable flexibility in configuring systems. This ability to reconfigure measurement and automation systems allows users to quickly adapt their systems to new and changing needs, eliminate duplicated programming efforts, and ultimately improve their efficiency and productivity. In addition, these features help protect both hardware and software investments against obsolescence.

Lower Total Solution Cost

National Instruments solutions offer price/performance and energy-efficiency advantages over traditional proprietary systems. Graphical System Design allows customers to equip powerful industry-standard computers, with  reusable system design software and modular cost-effective hardware. In addition, these systems give engineers and scientists the flexibility and portability to adapt to changing needs, while offering a smaller form factor that occupies less space on the manufacturing floor and consumes less energy than traditional instrumentation equipment.

Products, Technology and Services

We offer an extensive line of measurement and control products to work either separately, as stand-alone products or as an integrated solution; however, customers generally purchase our software and hardware together. We believe that the flexibility, functionality and ease of use of our system design software promotes sales of our other software and hardware products.

System Design Software

For the past 25 years, National Instruments has invested in its flagship software product, LabVIEW, which the company believes is the ultimate system design software for measurement and control. LabVIEW promotes problem-solving, accelerates productivity, and empowers innovation. With LabVIEW, users program graphically and can design custom virtual instruments by connecting icons with software wires to create “block diagrams” which are natural design notations for scientists and engineers. Users can customize front panels with knobs, buttons, dials and graphs to emulate control panels of instruments or add custom graphics to visually represent the control and operation of processes.

National Instruments believes that LabVIEW is the comprehensive development environment with the unprecedented hardware integration and wide-ranging compatibility that engineers and scientists need to design and deploy measurement and control systems. The LabVIEW programming environment is graphical, with engineering-specific libraries of software functions and hardware interfaces. It also offers data analysis, visualization and sharing features. Engineers and scientists can bring their vision to life with LabVIEW, and have access to a vast ecosystem of partners and technology alliances, and a global and active user community to innovate with confidence. When customers use LabVIEW, combined with the modular hardware approach with NI Data Acquisition, CompactRIO and PCI Extensions for Instrumentation (“PXI”) platforms, they are able to quickly integrate system components and do their jobs faster, better and at a lower cost.

LabVIEW Real-Time and LabVIEW FPGA are strategic modular software add-ons. With LabVIEW Real-Time, the user can easily configure their application program to execute using a real-time operating system kernel instead of the Windows operating system, so users can easily build virtual instrument solutions for mission-critical applications. In addition, with LabVIEW Real-Time, users can easily configure their programs to operate remotely on embedded processors in PXI-based systems, on embedded processors inside CompactRIO distributed I/O systems, or on processors embedded on plug-in PC data acquisition boards. With LabVIEW FPGA, the user can configure their application to execute directly in silicon via a Field Programmable Gate Array (“FPGA”) residing on one of our reconfigurable I/O hardware products. LabVIEW FPGA allows users to build their own highly specialized, custom hardware devices for ultra high-performance requirements or for unique or proprietary measurement or control protocols.

Programming Tools

In addition to LabVIEW, National Instruments offers LabWindows/CVI and Measurement Studio as alternative programming environments.  LabWindows/CVI users use the conventional, text-based programming language of C for creating test and control applications. Measurement Studio consists of measurement and automation add-on libraries and additional tools for programmers who prefer Microsoft’s Visual Basic, Visual C++, Visual C#, and Visual Studio.NET development environments.

Application Software

National Instruments also offers a suite of complementary software products, including NI TestStand, NI VeriStand, NI DIAdem and NI Multisim.

NI TestStand is targeted for T&M applications in a manufacturing environment. TestStand is a test management environment for organizing, controlling, and running automated prototype, validation, and manufacturing test systems. It also generates customized test reports and integrates product and test data across the customers’ enterprise and across the Internet. TestStand manages tests that are written in LabVIEW, LabWindows/CVI, Measurement Studio, C and C++, and Visual Basic, so test engineers can easily share and re-use test code throughout their organization and from one product to the next. TestStand is a key element of our strategy to broaden the reach of our application software products across the corporate enterprise.

NI VeriStand is a ready-to-use software environment for configuring real-time testing applications, including hardware-in-the-loop (“HIL”) test systems. With NI VeriStand, users configure real-time I/O, stimulus profiles, data logging, alarming, and other tasks; implement control algorithms or system simulations by importing models from a variety of software environments; build test system user interfaces quickly; and add custom functionality using NI LabVIEW, NI TestStand, and other software environments.

NI DIAdem offers users configuration-based technical data management, analysis, and report generation tools to interactively mine and analyze data. DIAdem helps users make informed decisions and meet the demands of today’s testing environments, which require quick access to large volumes of scattered data, consistent reporting, and data visualization.

NI Multisim equips engineers, educators, and students with powerful and innovative circuit design technology. Educators and students can take advantage of easy-to-use teaching tools to overcome the traditional hurdles in electronics education. Professional engineers can improve productivity with intuitive capture tools, interactive simulation, board layout, and design validation.

We offer volume licensing that helps customers maximize their software investment by reducing total cost of ownership and simplifying their software budgeting and purchasing.

Hardware Products and Related Driver Software

Using cutting-edge commercial technology, such as the latest processors, Analog to Digital Converters (“ADCs”), FPGAs, and PC busses, our hardware delivers modular and easy-to-use solutions for a wide range of applications – from automated test and data logging to industrial control and embedded design. Our hardware and related driver software products include data acquisition (“DAQ”), PXI chassis and controllers, image acquisition, motion control, distributed I/O, modular instruments and embedded control hardware/software, industrial communications interfaces, General Purpose Interface Bus (“GPIB”) interfaces, and VME Extension for Instrumentation (“VXI”) Controllers. The high level of integration among our products provides users with the flexibility to mix and match hardware components when developing custom virtual instrumentation systems.

Data Acquisition (DAQ) Hardware/Driver Software.  Our DAQ hardware and driver software products are “instruments on a board” that users can combine with sensors, signal conditioning hardware and software to acquire analog data and convert it into a digital format that can be accepted by a computer. Computer-based DAQ products are typically a lower-cost solution than traditional instrumentation and exploit the processing power, display, and connectivity capabilities of industry-standard computers. Applications suitable for automation with computer-based DAQ products are widespread throughout many industries, and many systems currently using traditional instrumentation (either manual or computer-controlled) could be displaced by computer-based DAQ systems. We offer a range of computer-based DAQ products with a variety of form factors and degrees of performance. In 2006, we introduced NI CompactDAQ, a rugged, portable, USB data acquisition system designed for high-performance mixed-signal measurement systems. Since its introduction, we have expanded the CompactDAQ platform with wireless and Ethernet technologies that have extended the reach of computer-based DAQ from across the lab to around the world. Some of our latest introductions in this area include X Series DAQ which delivers state-of-the-art measurement, generation, timing and triggering on a single device.

PXI Modular Instrumentation Platform.  Our PXI modular instrument platform, which was introduced in 1997, is a standard PC packaged in a small, rugged form factor with expansion slots and instrumentation extensions for timing, triggering and signal sharing. It combines mainstream PC software and PCI hardware with advanced instrumentation capabilities. In essence, PXI is an instrumentation PC with several expansion slots supporting complete system-level opportunities and delivering a much higher percentage of the overall system content using our own products. We continue to expand our PXI product offerings with new modules, which address a wide variety of measurement and automation applications. The platform is now a testing standard, with a wide array of companies developing on the platform and investing in its future through the PXI System Alliance (“PXISA”). In 2006, we introduced our first PXI Express products which provide backward software compatibility with PXI while providing advanced capabilities for high-performance instrumentation, such as RF instrumentation. Today, we have a rapidly expanding portfolio of PXI Express products that are further expanding the capabilities of this important platform.

Modular Instruments.  We offer a variety of modular instrument devices used in general purpose test and communication test applications.  These devices include digitizers, digital multimeters, signal generators, RF analyzers/generators, power supplies, source measurement units and switch modules that users can configure through software to meet their specific measurement tasks. Because these instruments are modular and software-defined, they can be quickly interchanged and easily repurposed to meet evolving test needs. Additionally, our modular instruments provide high-speed test execution by harnessing the power of industry-standard PC FPGAs and advanced timing and synchronization technologies. Options are available for a variety of platforms including PXI, PXI Express, PCI, PCI Express, and USB.

Machine Vision/Image Acquisition. Our machine vision platform includes a range of hardware platform options, from embedded NI Smart Cameras that integrate the sensor and processor in a single package to NI Embedded and NI Compact Vision Systems to plug-in boards for PCI and PXI systems. We offer two software options for use across the entire NI vision hardware portfolio. A user can configure a system with NI Vision Builder for Automated Inspection, an easy-to-use, stand-alone package for machine vision, or program it using the NI Vision Development Module, a comprehensive library of imaging functions. With NI Vision hardware, a user can build high-performance, PC based systems using the latest processor techniques with NI Frame Grabbers, save on cost and space by combining an image sensor and real-time embedded processors into one rugged, industrial package with NI Smart Cameras, or harness multicore performance with fanless designs, connectivity to multiple cameras and reconfigurable digital I/O with NI Vision systems.

Motion Control. By integrating flexible software with high-performance hardware, our motion control products offer a powerful solution for motion system design. From automating test equipment and research labs to controlling biomedical, packaging, and manufacturing machines, engineers use our motion products to meet a diverse set of application challenges. Our software tools for motion easily integrate with our other product lines, so users can combine motion control with image acquisition, test, measurement, data acquisition, and automation to create robust, flexible solutions. We introduced our first line of motion control hardware, software and peripheral products in 1997.

NI RIO Hardware Platform.  NI reconfigurable I/O (“RIO”) hardware combined with NI LabVIEW system design software provides a commercial off-the-shelf solution to simplify development and shorten time to market when designing advanced measurement and control systems. All NI RIO hardware systems, which include products like CompactRIO, NI Single-Board RIO, R Series boards and PXI-based FlexRIO, feature a standard, high-performance architecture that combines a powerful floating-point processor, reconfigurable FPGA, and modular I/O. Engineers can program all NI RIO hardware components with NI LabVIEW, including the LabVIEW FPGA Module, to rapidly create custom timing, signal processing and control for I/O without requiring expertise in low-level hardware description languages or board-level design. NI provides a breadth of NI RIO hardware targets that provide varying degrees of performance, cost, I/O rates, and ruggedness, to meet any unique application need. NI first released NI RIO hardware in 2003 with the release of the first R Series PXI plug-in board along with the release of the first CompactRIO rugged, high-performance embedded system. To date, NI has released over 60 NI RIO FPGA-based hardware products.

Industrial Communications Interfaces.  In 1995, we began shipping our first interface boards for communicating with serial devices, such as data loggers and PLCs targeted for industrial/embedded applications, and benchtop instruments, such as oscilloscopes, targeted for test and measurement applications. We offer hardware and driver software product lines for communication with industrial devices—Controller Area Network (“CAN”), DeviceNet, Foundation Fieldbus, and RS-485 and RS-232.

GPIB Interfaces/Driver Software.  We began selling GPIB products in 1977 and are a leading supplier of GPIB interface boards and driver software to control traditional GPIB instruments. These traditional instruments are manufactured by a variety of third-party vendors and are used primarily in T&M applications. Our diverse portfolio of hardware and software products for GPIB instrument control is available for a wide range of computers. Our GPIB product line also includes products for controlling GPIB instruments using the computer’s standard parallel, USB, Ethernet, and serial ports.

VXI Controllers//Driver Software.  We are a leading supplier of VXI computer controller hardware and the accompanying NI-VXI and NI-VISA driver software. We also offer LabVIEW, LabWindows/CVI, Measurement Studio and TestStand software products for VXI systems.

Services

System Configuration and Deployment. Our trained technicians install software and hardware and configure our customers’ PXI, PXI/SCXI combination, NI CompactRIO, or NI Compact FieldPoint system to their specifications.

Calibration. We provide calibration solutions, including recalibration services, manual calibration procedures, and automated calibration software.  In 2011, the American Association for Laboratory Accreditation (A2LA) accredited NI Calibration Services Austin to one of the highest international calibration standards in the industry, ISO/IEC 17025:2005.  National Instruments now offers 17025 calibration services for OEMs and other organizations seeking to maintain compliance with the strictest governmental, medical, transportation and electronics regulations.  The new calibration service offering is ideal for companies standardizing their automated test and measurement systems on PXI modular instrumentation, which provides some of the most advanced technology for addressing the latest engineering challenges.

Warranty and Repair. We offer standard and extended warranties to help meet project life-cycle requirements and provide repair services for our products, express repair, and advance replacement services.

Customer Training Courses. We offer fee-based training classes and self-paced course kits for many of our software and hardware products. On-site courses are quoted per customer requests and we include on-line course offerings with live teachers. We also offer programs to certify programmers and instructors for our products.

Software Maintenance

Software maintenance revenue is post-purchase contract customer support that provides the customer with unspecified upgrades and/or updates and technical support.

Markets and Applications

Our products are used across many industries in a variety of applications including research and development, simulation and modeling, product design, prototype and validation, production testing and industrial control and field and factory service and repair. We serve the following industries and applications worldwide: advanced research, automotive, automated test equipment, consumer electronics, commercial aerospace, computers and electronics, continuous process manufacturing, education, government/defense, medical research/pharmaceutical, power/energy, semiconductors, telecommunications and others.

Customers

We have a broad base of over 35,000 customers worldwide, with no customer accounting for more than 4% of our sales in 2011 and 2010 or 3% of our sales in 2009.

Marketing

Through our worldwide marketing efforts, we strive to educate engineers and scientists about the benefits of our graphical system design philosophy, products and technology, and to highlight the performance and cost advantages of our products. We also seek to present our position as a technology leader among producers of instrumentation software and hardware and to help promulgate industry standards that can benefit users of computer-based instrumentation.

We reach our intended audience through our website at ni.com as well as through the distribution of written and electronic materials including demonstration versions of our software products, participation in tradeshows and technical conferences and training and user seminars.

We actively market our products in higher education environments, and we identify many colleges, universities and trade and technical schools as key accounts. We offer special academic pricing and products to enable universities to utilize our products in their classes and laboratories. We believe our prominence in the higher education area can contribute to our future success because students gain experience using our products before they enter the work force.

Sales and Distribution

We sell our software and hardware products primarily through a direct sales organization. We also use independent distributors, OEMs, VARs, system integrators and consultants to market our products. Sales through any one of these channels accounted for less than 5% of our total sales in 2011. Our Hungarian manufacturing facility sources a substantial majority of our sales throughout the world. We have sales offices in the U.S. and sales offices and distributors in key international markets. Sales outside of the U.S. accounted for approximately 63%, 62% and 61%, of our revenues in 2011, 2010 and 2009, respectively. We expect that a significant portion of our total revenues will continue to be derived from international sales. (See Note 12 – Segment information of Notes to Consolidated Financial Statements for details concerning the geographic breakdown of our net sales, operating income, interest income and identifiable assets.)

We believe the ability to provide comprehensive service and support to our customers is an important factor in our business. We permit customers to return products within 30 days from receipt for a refund of the purchase price less a restocking charge. Our products are generally warranted against defects in materials and workmanship for one year from the date we ship the products to our customers. Historically, warranty costs and returns have not been material.

The marketplace for our products dictates that many of our products be shipped very quickly after an order is received. As a result, we are required to maintain significant inventories. Therefore, inventory obsolescence is a risk for us due to frequent engineering changes, shifting customer demand, the emergence of new industry standards and rapid technological advances including the introduction by us or our competitors of products embodying new technology. We strive to mitigate this risk by monitoring inventory levels against product demand and technological changes. Additionally, many of our products have interchangeable parts and many have long lives. There can be no assurance that we will be successful in these efforts in the future.

Our foreign operations are subject to certain risks set forth on page 16 under “We are Subject to Various Risks Associated with International Operations and Foreign Economies.”

See discussion regarding fluctuations in our quarterly results and seasonality in ITEM 1A, Risk Factors, “Our Revenues are Subject to Seasonal Variations.”

Competition

The markets in which we operate are characterized by intense competition from numerous competitors, some of which are divisions of large corporations having far greater resources than we have, and we may face further competition from new market entrants in the future. A key competitor is Agilent Technologies Inc. (“Agilent”). Agilent offers hardware and software products that provide solutions that directly compete with our virtual instrumentation products and has recently released its own line of PXI based hardware. Agilent is aggressively advertising and marketing products that are competitive with our products. Because of Agilent’s strong position in the instrumentation business, changes in its marketing strategy or product offerings could have a material adverse effect on our operating results.

We believe our ability to compete successfully depends on a number of factors both within and outside our control, including:

·   general market and economic conditions, particularly in the Euro zone;

·   success in developing new products;

·   timing of our new product introductions;

·   new product introductions by competitors;

·   the ability of competitors to more fully leverage low cost geographies;

·   the impact of foreign exchange rates on product pricing;

·   product pricing;

·   effectiveness of sales and marketing resources and strategies;

·   adequate manufacturing capacity and supply of components and materials;

·   efficiency of manufacturing operations;

·   strategic relationships with our suppliers;

·   quality and performance;

·   protection of our products by effective use of intellectual property laws;

·   the outcome of any material intellectual property litigation;

·   the financial strength of our competitors;

·   barriers to entry imposed by competitors with significant market power in new markets; and

·   government actions throughout the world.

We currently believe that we compete effectively with respect to the foregoing factors; however, there can be no assurance that we will be able to compete successfully in the future.

Research and Development

We believe that our long-term growth and success depends on delivering high quality hardware and software products on a timely basis. We intend to focus our research and development efforts on enhancing existing products and developing new products that incorporate appropriate features and functionality to be competitive with respect to technology and price/performance characteristics.

Our research and development staff strives to build quality into our products at the design stage in an effort to reduce overall development and manufacturing costs. Our research and development staff also designs proprietary application specific integrated circuits (“ASICs”), many of which are designed for use in several of our products. The goal of our ASIC design program is to further differentiate our products from competing products, to improve manufacturability and to reduce costs. We seek to reduce our time to market for new and enhanced products by sharing our internally developed hardware and software components across multiple products.

As of December 31, 2011, we employed 1,868 people in product research and development. Our research and development expenses were $199 million, $158 million and $133 million for 2011, 2010 and 2009, respectively.

Intellectual Property

We rely on a combination of patent, trade secret, copyright and trademark law, contracts and technical measures to establish and protect our proprietary rights in our products. As of December 31, 2011, we held 610 U.S. patents (607 utility patents and 3 design patents) and 23 patents in foreign countries (22 patents registered in Europe in various countries; and 1 patent in Japan), and had 280 patent applications pending in the U.S. and foreign countries. 170 of our issued U.S. patents are software patents related to LabVIEW, and cover fundamental aspects of the graphical programming approach used in LabVIEW. Our patents expire from 2012 to 2030. The expiration of any patents in the short term is not expected to have any significant negative impact on our business. No assurance can be given that our pending patent applications will result in the issuance of patents. We also own certain registered trademarks in the United States and abroad. See further discussion regarding risks associated with our patents in ITEM 1A, Risk Factors, “Our Business Depends on Our Proprietary Rights and We are Subject to Intellectual Property Litigation.”

Manufacturing and Suppliers

We manufacture a substantial majority of our products at our facilities in Debrecen, Hungary. Additional production primarily of low volume, complex or newly introduced products is done in Austin, Texas. Our product manufacturing operations can be divided into four areas: electronic circuit card and module assembly; chassis and cable assembly; technical manuals and product support documentation; and software duplication. We manufacture most of the electronic circuit card assemblies and modules in-house, although subcontractors are used from time to time. We have used a subcontractor in Asia to manufacture a significant portion of our chassis but most of that production was moved in house during 2010. We manufacture some of our electronic cable assemblies in-house, but many assemblies are produced by subcontractors. We primarily subcontract our software duplication, our technical manuals and product support documentation.

Our long term manufacturing and warehousing capacity planning contemplates a third manufacturing and warehousing facility in Penang, Malaysia. We began warehousing and distribution operations out of Penang, Malaysia via a third party logistics provider in October 2010. We began construction of our manufacturing and logistics facility in Malaysia in the third quarter of 2011.

Our manufacturing processes use large volumes of high-quality components and subassemblies supplied by outside sources in the U.S., Europe and Asia. Several of these components are available through limited sources. Limited source components purchased include custom ASICs and other RF or custom components. Any disruption of our supply of limited source components, whether resulting from business demand, quality, production or delivery problems, could adversely affect our ability to manufacture our products, which could in turn adversely affect our business and results of operations. See “Our Business is Dependent on Key Suppliers” at page 12 for additional discussion of the risks associated with limited source suppliers.

See “Our Manufacturing Operations are Subject to a Variety of Environmental Regulations and Costs” at page 17 for discussion of environmental matters as they may affect our business.

Backlog

Backlog is a measure of orders that are received but that are not shipped to customers at the end of a quarter. We typically ship products shortly following the receipt of an order. Accordingly, our backlog typically represents less than 5 days sales. Backlog should not be viewed as an indicator of our future sales.

Employees

As of December 31, 2011, we had 6,235 employees worldwide, including 1,868 in research and development, 2,854 in sales and marketing and customer support, 808 in manufacturing and 705 in administration and finance. None of our employees are represented by a labor union and we have never experienced a work stoppage. We consider our employee relations to be good. For thirteen consecutive years, from 1999 to 2011, we have been named among the 100 Best Companies to Work for in America according to FORTUNE magazine.

ITEM 1A.                   RISK FACTORS

Uncertain Economic Conditions Could Materially Adversely Affect Our Business and Results of Operations.  Our business is sensitive to fluctuations in general economic conditions, both in the U.S. and globally. Uncertainty associated with financial markets, negative financial news, foreign currency markets, natural disasters, energy costs, budget and tax policies throughout the world’s developed economies, employment levels, labor costs, healthcare costs, declining income or asset values and credit availability, could negatively impact the global industrial economy. Historically, our business cycles have generally followed the expansion and contraction cycles in the global industrial economy as measured by the PMI. The most recent reading for December 2011, showed the PMI had increased to 50.8 up from readings below 50 for the previous three months, but continues to indicate overall weakness in the global industrial economy. A reading above 50 indicates an expanding industrial economy while a reading below 50 indicates a contracting industrial economy. We are unable to predict whether the industrial economy, as measured by the PMI will strengthen or contract during 2012. If the industrial economy, as measured by the PMI, contracts or remains at a neutral reading at or around 50, indicating general weakness, it could have an adverse effect on the spending patterns of businesses including our current and potential customers which could adversely affect our revenues and result of operations.

Our Revenues are Subject to Seasonal Variations.  In previous years, our revenues have been characterized by seasonality, with revenues typically growing from the first quarter to the second quarter, being relatively constant from the second quarter to the third quarter, growing in the fourth quarter compared to the third quarter and declining in the first quarter of the following year from the fourth quarter of the preceding year. This historical trend has been affected and may continue to be affected in the future by broad fluctuations in the global industrial economy, the economic impact of larger orders as well as the timing of new product introductions or acquisitions, if any. The economic contraction in the Euro zone during the fourth quarter of 2011 could persist or worsen in 2012. If this instability in the Euro zone continues, worsens or negatively affects other economic regions in 2012, it may have a material adverse effect on the seasonal patterns described above as well as on our overall results of operations and profitability. Our total operating expenses have in the past tended to increase in each successive quarter and have fluctuated as a percentage of revenue based on the seasonality of our revenue.

Concentrations of Credit Risk and Uncertain Conditions in the Global Financial Markets May Adversely Affect Our Business and Result of Operations.  By virtue of our holdings of cash, investment securities and foreign currency derivatives, we have exposure to many different counterparties, and routinely execute transactions with counterparties in the financial services industry, including commercial banks and investment banks. Many of these transactions expose us to credit risk in the event of a default of our counterparties. We continue to monitor the stability of the financial markets, particularly those in the European region and have taken steps to limit our direct and indirect exposure to these markets; however, we can give no assurance that we will not be negatively impacted by any adverse outcomes in those markets. There can be no assurance that any losses or impairments to the carrying value of our financial assets as a result of defaults by our counterparties, would not materially and adversely affect our business, financial position and results of operations.

Changes in the Amount of Revenue Derived from Large Orders Could Adversely Affect our Gross Margin and Could Lead to Greater Variability in our Quarterly Results.  Our large order business, defined as orders with a value greater than $20,000, continues to grow as a percent of our overall business. As a percent of our overall business, larger orders reached a new high during 2011 and represented 45%, 42% and 38% of our total sales during 2011, 2010 and 2009, respectively. Larger orders may be more sensitive to changes in the global industrial economy, may be subject to greater discount variability and may contract at a faster pace during an economic downturn. Historically, our gross margins have been stable from period to period. To the extent that the amount of our revenue derived from larger orders increases in future periods, both in absolute dollars and as a percent of our overall business, our gross margins could experience greater volatility and see a greater negative impact from future downturns in the global industrial economy. This dynamic may also have an adverse effect on the historical seasonal pattern of our revenues and our results of operations.

Risks or Claims Associated With the Compliance With Our Pricing Provisions of Our Previous GSA Contract Could Have a Material Adverse Impact on Our Results of Operations. From November 1999 to May 2011, we sold products to the U.S. government under a contract with the General Services Administration ("GSA"). During such time, our sales under the contract were approximately 2% of our total sales. Our previous contract with GSA contained a price reduction or "most favored customer" pricing provision. For the past several months, we have been in discussions with GSA regarding our compliance with this pricing provision and have provided GSA with information regarding our pricing practices. GSA conducted an on-site review of our GSA pricing practices and orally informed us that GSA did not agree with our previous determination of the potential non-compliance amount.  GSA subsequently requested that we conduct a further analysis of the non-compliance amount based upon a methodology that GSA proposed. This analysis resulted in calculated overpayments (including added interest) by GSA to us of approximately $13.1 million. GSA is reviewing the analysis and has not yet officially responded, and has not made any formal demand for pricing adjustments related to our previous GSA contract. However, GSA may make such a demand in the future, and there can be no assurance that the amount of any such demand, if we were required to pay it, would not have a material adverse impact on our results of operations. If GSA believes that our pricing practices did not comply with the contract, GSA could conduct a formal investigation of such matter or could refer such matter to the U.S. Department of Justice for investigation, including an investigation regarding potential violations of the False Claims Act, which could result in litigation and the possible imposition of a damage remedy that includes treble damages plus civil penalties, and could also result in us being suspended or debarred from future government contracting.  As a result of the foregoing, during the quarter ended September 30, 2011, we established an accrual of $13.1 million which represents the amount of the loss contingency that is reasonably estimable at this time.  There can be no assurance that our actual losses will not exceed such reserve amount. Due to the complexities of conducting business with GSA, the relatively small amount of revenue we realized from our previous GSA contract, and our belief that we can continue to sell our products to U.S. government agencies through other contracting methods, we cancelled our contract with GSA in April 2011, effective May 2011. To date, we have not experienced any material adverse impact on our results of operations as a result of the cancellation of our previous GSA contract.

Our Acquisitions are Subject to a Number of Related Costs and Challenges that Could Have a Material Adverse Effect on Our Business and Results of Operations.  During the second quarter of 2011, we completed the acquisitions of AWR Corporation (AWR) and Phase Matrix Inc. (PMI). We may in the future acquire additional complementary businesses, products or technologies. Achieving the anticipated benefits of an acquisition depends upon whether the integration of the acquired business, products or technology is accomplished efficiently and effectively. In addition, successful acquisitions generally require, among other things, integration of product offerings, manufacturing operations and coordination of sales and marketing and R&D efforts. These difficulties can become more challenging due to the need to coordinate geographically separated organizations, the complexities of the technologies being integrated, and the necessities of integrating personnel with disparate business backgrounds and combining different corporate cultures. The integration of operations following an acquisition also requires the dedication of management resources, which may distract attention from our day-to-day business and may disrupt key R&D, marketing or sales efforts. Our inability to successfully integrate AWR and PMI or any future acquisition could harm our business. The existing products previously sold by entities we have acquired may be of a lesser quality than our products and/or could contain errors that produce incorrect results on which users rely or cause failure or interruption of systems or processes that could subject us to liability claims that could have a material adverse effect on our operating results or financial position. Furthermore, products acquired in connection with acquisitions may not gain acceptance in our markets, and we may not achieve the anticipated or desired benefits of such transactions.

Our Quarterly Results are Subject to Fluctuations Due to Various Factors that May Adversely Affect Our Business and Result of Operations.  Our quarterly operating results have fluctuated in the past and may fluctuate significantly in the future due to a number of factors, including:

·   changes in the global economy or global credit markets, particularly in the Euro zone;

·   adjustments to acquisition earn-out accruals;

·   changes in the amount of revenue derived from large orders;

·   fluctuations in foreign currency exchange rates;

·   the timing, cost or outcome of any future intellectual property or commercial disputes including under our previous GSA contract;

·   changes in the mix of products sold;

·   the availability and pricing of components from third parties (especially limited sources);

·   the difficulty in maintaining margins, including the higher margins traditionally achieved in international sales;

·   changes in pricing policies by us, our competitors or suppliers;

·   delays in product shipments caused by human error or other factors; and,

·   disruptions in transportation channels.

Our Business is Dependent on Key Suppliers.  Our manufacturing processes use large volumes of high-quality components and subassemblies supplied by outside sources. Several of these components are available through limited sources. Limited source components purchased include custom application specific integrated circuits (“ASICs”), chassis and other components. We have in the past experienced delays and quality problems in connection with limited source components, and there can be no assurance that these problems will not recur in the future. Accordingly, our failure to receive components from limited suppliers could result in a material adverse effect on our revenues and operating results. In the event that any of our limited suppliers experience significant financial or operational difficulties due to adverse global economic conditions or otherwise, our business and operating results would likely be adversely impacted until we are able to secure another source for the required materials.

We May Experience Component Shortages that May Adversely Affect Our Business and Result of Operations.  As has occurred in the past and as may be expected to occur in the future, supply shortages of components used in our products, including limited source components, can result in significant additional costs and inefficiencies in manufacturing. If we are unsuccessful in resolving any such component shortages in a timely manner, we will experience a significant impact on the timing of revenue, a possible loss of revenue, and/or an increase in manufacturing costs, any of which would have a material adverse impact on our operating results.

A Substantial Majority of Our Manufacturing Capacity is Located in Hungary. Our Hungarian manufacturing and warehouse facility sources a substantial majority of our sales. In order to enable timely shipment of products to our customers we also maintain the vast majority of our inventory at our Hungary warehouse facility. In addition to being subject to the risks of maintaining such a concentration of manufacturing capacity and global inventory, this facility and its operation are also subject to risks associated with doing business internationally, including:

·   a changing and unstable political environment;

·   significant and frequent changes in the corporate tax law;

·   the volatility of the Hungarian forint relative to the U.S. dollar;

·   difficulty in managing manufacturing operations in a foreign country;

·   challenges in expanding capacity to meet increased demand;

·   difficulty in achieving or maintaining product quality;

·   interruption to transportation flows for delivery of components to us and finished goods to our customers;

·   a restrictive labor code; and,

·   increasing labor costs.

No assurance can be given that our efforts to mitigate these risks will be successful. We are currently operating our manufacturing facility in Hungary at a high level of capacity utilization and are selectively increasing our capacity to meet anticipated demand for our products. Any failure to effectively deal with the risks above could result in an interruption in the facility’s operation or delays in expanding its capacity, either of which could have a material adverse effect on our operating results and limit our revenue growth opportunities.

Our long term manufacturing and warehousing capacity planning contemplates a third manufacturing and warehousing facility in Penang, Malaysia. We began warehousing and distribution operations out of Penang, Malaysia via a third party logistics provider in October 2010. We began construction of a manufacturing, logistics and research and development facility in Malaysia in the third quarter of 2011. We can give no assurance that we will be successful in deploying our new facility in Malaysia on schedule or that we will not exceed our cost estimates. Our failure to successfully deploy our new facility in Malaysia or our failure to deploy this facility without exceeding our cost estimates could have a material adverse effect on our ability to meet customer demands, our ability to grow our business as well as our liquidity, capital resources and results of operations. If we succeed in deploying our Malaysian manufacturing facility on schedule and the demand for our products does not grow as expected, we will have excess manufacturing capacity which will cause an increase in overhead that will negatively impact our gross margins and results of operations.

We Have Established a Budget and Variations From Our Budget Will Affect Our Financial Results.  We established an operating budget for 2012. Our budgets are established based on the estimated revenue from sales of our products which are based on economic conditions in the markets in which we do business as well as the timing and volume of our new products and the expected penetration of both new and existing products in the marketplace. Throughout 2011, we increased our overall headcount by 955. During 2012, we will see the full year impact of these headcount additions on our operating expenses. If demand for our products in 2012 is less than the demand we anticipated in setting our 2012 budget, our operating results could be negatively impacted. If we exceed the level of expenses established in our 2012 operating budget or if we cannot reduce budgeted expenditures in response to a decrease in revenue, our operating results could be adversely affected. Our spending could exceed our budgets due to a number of factors, including:

·   increased costs from hiring more product development engineers or other personnel;

·   increased costs from hiring more field sales personnel;

·   the timing cost or outcome of any future intellectual property or commercial disputes including under our previous GSA contract;

·   increased manufacturing costs resulting from component supply shortages or component price fluctuations;

·   additional marketing costs for new product introductions or for conferences and tradeshows;

·   increased component costs resulting from vendors increasing prices in response to increased economic activity; or

·   additional costs related to acquisitions, if any.

Our Income Tax Rate is Affected by our Tax Benefits in Hungary.  The profit from our Hungarian operation benefits from the fact that it is subject to an effective income tax rate that is lower than the U.S. federal statutory tax rate of 35%. Our earnings in Hungary are subject to a statutory tax rate of 19%. The difference between this rate and the statutory U.S. rate of 35% resulted in income tax benefits of $16 million and $13 million for the years ended December 31, 2011 and 2010, respectively. In addition, effective January 1, 2010, certain qualified research and development expenses became eligible for an enhanced tax deduction. The enhanced tax deduction for research and development expenses resulted in income tax benefits of $17 million and $13 million for the years ended December 31, 2011 and 2010, respectively. This tax benefit may not be available in future years due to changes in political conditions in Hungary or changes in tax laws in Hungary and in the U.S. The reduction or elimination of these benefits in Hungary or future changes in U.S. law pertaining to the taxation of foreign earnings could result in an increase in our future effective income tax rate which could have a material adverse effect on our operating results. No countries other than Hungary had a significant impact on our effective tax rate. We have not entered into any advanced pricing or other agreements with the Internal Revenue Service with regard to any foreign jurisdictions.

We are Subject to Risks Associated with Our Centralization of Inventory and Distribution.  Currently, shipments to our customers worldwide are primarily sourced from our warehouse facility in Debrecen, Hungary. Shipments to some of our customers in Asia are currently made either out of local inventory managed by our branch operations in various Asian countries or from a centralized distribution point in Penang, Malaysia. We plan to continue to devote resources to centralizing our distribution to a limited number of shipping points. Our centralization of inventory and distribution from a limited number of shipping points is subject to inherent risks, including:

·   burdens of complying with additional and/or more complex VAT and customs regulations; and,

·   severe concentration of inventory increasing the risks associated with fire, natural disasters and logistics disruptions to customer order fulfillment.

Any difficulties with the centralization of our distribution or delays in the implementation of the systems or processes to support this centralized distribution could result in an interruption of our normal operations, including our ability to process orders and ship products to our customers. Any failure or delay in distribution from our facilities in Hungary and Malaysia could have a material adverse effect on our operating results.

We Operate in Intensely Competitive Markets.  The markets in which we operate are characterized by intense competition from numerous competitors, some of which are divisions of large corporations having far greater resources than we have, and we may face further competition from new market entrants in the future. A key competitor is Agilent Technologies Inc. (“Agilent”). Agilent offers hardware and software products that provide solutions that directly compete with our virtual instrumentation products and Agilent has released its own line of PXI based hardware. Agilent is aggressively advertising and marketing products that are competitive with our products. Because of Agilent’s strong position in the instrumentation business, changes in its marketing strategy or product offerings could have a material adverse effect on our operating results.

We believe our ability to compete successfully depends on a number of factors both within and outside our control, including:

·   general market and economic conditions, particularly in the Euro zone;

·   success in developing new products;

·   timing of our new product introductions;

·   new product introductions by competitors;

·   the ability of competitors to more fully leverage low cost geographies;

·   the impact of foreign exchange rates on product pricing;

·   product pricing;

·   effectiveness of sales and marketing resources and strategies;

·   adequate manufacturing capacity and supply of components and materials;

·   efficiency of manufacturing operations;

·   strategic relationships with our suppliers;

·   quality and performance;

·   protection of our products by effective use of intellectual property laws;

·   the outcome of any material intellectual property litigation;

·   the financial strength of our competitors;

·   barriers to entry imposed by competitors with significant market power in new markets; and,

·   government actions throughout the world.

There can be no assurance that we will be able to compete successfully in the future.

We Rely on Management Information Systems and Interruptions in our information technology systems could adversely affect our business.  We rely on the efficient and uninterrupted operation of complex information technology systems and networks to operate our business. We rely on a primary global center for our management information systems and on multiple systems in branches not covered by our global center. As with any information system, unforeseen issues may arise that could affect our ability to receive adequate, accurate and timely financial information, which in turn could inhibit effective and timely decisions. Furthermore, it is possible that our global center for information systems or our branch operations could experience a complete or partial shutdown. Significant system or network disruption could be the result of new system implementations, computer viruses, security breaches, facility issues or energy blackouts. If such a shutdown or disruption occurred, it would impact our product shipments and revenues, as order processing and product distribution are heavily dependent on our management information systems. Such an interruption could also result in a loss of our intellectual property or the release of sensitive competitive information or partner, customer or employee personal data. Any loss of such information could harm our competitive position, result in a loss of customer confidence, and cause us to incur significant costs to remedy the damages caused by the disruptions or security breaches. Accordingly, our operating results in such periods would be adversely impacted.

We are continually working to maintain reliable systems to control costs and improve our ability to deliver our products in our markets worldwide. Our efforts include, but are not limited to following: firewalls, antivirus, patches, log monitors, routine backups with offsite retention of storage media, system audits, data partitioning and routine password modifications. No assurance can be given that our efforts will be successful.

During 2010, we devoted significant resources to completing the upgrade of our Americas business application suite to Oracle’s version R12. During 2011, we devoted significant resources to completing the upgrade of our business application suite used primarily by our European, Japanese, and global manufacturing operations to Oracle’s version R12 and completing an upgrade to the underlying infrastructure of our website, ni.com. We continue to devote resources to the development of our web offerings.

There can be no assurance that we will not experience difficulties with these new systems.  Difficulties with these new systems may interrupt normal operations, including the ability to provide quotes, process orders, ship products, provide services and support to our customers, bill and track our customers, fulfill contractual obligations and otherwise run our business.  Any disruptions of the systems may have a material adverse effect on our results of operations.

Adoption of Complex Health Care Legislation and Related Regulations and Financial Reform Could Increase our Operating Costs and Adversely Affect Our Result of Operations. The adoption of the Patient Protection and Affordable Care Act and the related reconciliation measure, the Health Care and Education Reconciliation Act of 2010, and the regulations resulting from such legislation could increase the costs of providing health care to our employees. Due to the complexity of the legislation and the uncertain timing and content of the related regulations, we are unable to predict the amount and timing of any such increased costs. In addition, it is likely that we will incur additional administrative costs to comply with certain provisions of this legislation. Due to the fact that many of the rules and regulations have not yet been defined, we are unable to predict the amount of these costs or to what extent we may need to divert other resources to comply with various provisions of this legislation. Additionally, the Dodd-Frank Wall Street Reform and Consumer Protection Act could result in increased costs to us either as a result of our efforts to comply with the corporate governance provisions which may be applicable to us or due to the impact of such legislation on the derivative contracts or other financial instruments or financial markets that we utilize in the normal course of our business.

Our Product Revenues are Dependent on Certain Industries.  Sales of our products are dependent on customers in certain industries, particularly the telecommunications, semiconductor, consumer electronics, automotive, automated test equipment, defense and aerospace industries. As we have experienced in the past, and as we may continue to experience in the future, downturns characterized by diminished product demand in any one or more of these industries may result in decreased sales, and a material adverse effect on our operating results.

Our Success Depends on New Product Introductions and Market Acceptance of Our Products.  The market for our products is characterized by rapid technological change, evolving industry standards, changes in customer needs and frequent new product introductions, and is therefore highly dependent upon timely product innovation. Our success is dependent on our ability to successfully develop and introduce new and enhanced products on a timely basis to replace declining revenues from older products, and on increasing penetration in domestic and international markets. As has occurred in the past and as may be expected to occur in the future, we have experienced significant delays between the announcement and the commercial availability of new products. Any significant delay in releasing new products could have a material adverse effect on the ultimate success of a product and other related products and could impede continued sales of predecessor products, any of which could have a material adverse effect on our operating results. There can be no assurance that we will be able to introduce new products in accordance with announced release dates, that our new products will achieve market acceptance or that any such acceptance will be sustained for any significant period. Failure of our new products to achieve or sustain market acceptance could have a material adverse effect on our operating results. Moreover, there can be no assurance that our international sales will continue at existing levels or grow in accordance with our efforts to increase foreign market penetration.

We are Subject to Risks Associated with Our Website.  We devote resources to maintain our Website as a key marketing, sales and support tool and expect to continue to do so in the future. However, there can be no assurance that we will be successful in our attempt to leverage the Web to increase sales. We host our Website internally. Any failure to successfully maintain our Website or any significant downtime or outages affecting our Website could have a material adverse impact on our operating results.

Our Products are Complex and May Contain Bugs or Errors.  As has occurred in the past and as may be expected to occur in the future, our new software products or new operating systems of third parties on which our products are based often contain bugs or errors that can result in reduced sales or cause our support costs to increase, either of which could have a material adverse impact on our operating results.

We are Subject to Various Risks Associated with International Operations and Foreign Economies.  Our international sales are subject to inherent risks, including:

·   difficulties and the high tax costs associated with the repatriation of earnings;

·   fluctuations in local economies;

·   fluctuations in foreign currencies relative to the U.S. dollar;

·   difficulties in staffing and managing foreign operations;

·   greater difficulty in accounts receivable collection;

·   costs and risks of localizing products for foreign countries;

·   unexpected changes in regulatory requirements;

·   tariffs and other trade barriers; and,

·   the burdens of complying with a wide variety of foreign laws.

In many foreign countries, particularly in those with developing economies, it is common to engage in business practices that are prohibited by U.S. regulations applicable to us such as the Foreign Corrupt Practices Act. Although we have policies and procedures designed to ensure compliance with these laws, there can be no assurance that all of our employees, contractors and agents, including those based in or from countries where practices which violate such U.S. laws may be customary, will not take actions in violation of our policies. Any violation of foreign or U.S. laws by our employees, contractors or agents, even if such violation is prohibited by our policies, could have a material adverse effect on our business. We must also comply with various import and export regulations. The application of these various regulations depends on the classification of our products which can change over time as such regulations are modified or interpreted. As a result, even if we are currently in compliance with applicable regulations, there can be no assurance that we will not have to incur additional costs or take additional compliance actions in the future. Failure to comply with these regulations could result in fines or termination of import and export privileges, which could have a material adverse effect on our operating results. Additionally, the regulatory environment in some countries is very restrictive as their governments try to protect their local economy and value of their local currency against the U.S. dollar.

The vast majority of our sales outside of North America are denominated in local currencies, and accordingly, the U.S. dollar equivalent of these sales is affected by changes in the foreign currency exchange rates. The change in exchange rates had the effect of increasing our consolidated sales by $27 million or 3% in 2011, and increasing our consolidated sales by $13 million or 2% in 2010. Since most of our international operating expenses are also incurred in local currencies, the change in exchange rates had the effect of increasing our consolidated operating expenses by $19 million or 3% in 2011, and increasing our consolidated operating expenses by $9 million or 3% in 2010.

During the first half of 2011, the U.S. dollar generally declined against most of the major currencies in the markets in which we do business. During the six month period ended December 31, 2011, we saw the U.S. dollar turn significantly stronger against most of the major currencies in the markets in which we do business. We cannot predict to what degree or how long this recent volatility in the foreign currency exchange markets will continue.  In the past, we have noted that significant volatility in foreign currency exchange rates in the markets in which we do business has had a significant impact on the revaluation of our foreign currency denominated firm commitments, on our ability to forecast our U.S. dollar equivalent revenues and expenses and on the effectiveness of our hedging programs. In the past, these dynamics have also adversely affected our revenue growth in international markets and may pose similar challenges in the future. We recognize the local currency as the functional currency in virtually all of our international subsidiaries.

Our Business Depends on Our Proprietary Rights and We Have Been Subject to Intellectual Property Litigation.  Our success depends on our ability to obtain and maintain patents and other proprietary rights relative to the technologies used in our principal products. Despite our efforts to protect our proprietary rights, unauthorized parties may have in the past infringed or violated certain of our intellectual property rights. We from time to time engage in litigation to protect our intellectual property rights. In monitoring and policing our intellectual property rights, we have been and may be required to spend significant resources. We from time to time may be notified that we are infringing certain patent or intellectual property rights of others. There can be no assurance that any future intellectual property litigation will not result in significant litigation expense, liability, injunction against the sale of some of our products, and a diversion of management’s attention, any of which may have a material adverse effect on our operating results.

Our Reported Financial Results May be Adversely Affected by Changes in Accounting Principles Generally Accepted in the United States.  We prepare our financial statements in conformity with accounting principles generally accepted in the U.S. These accounting principles are subject to interpretation by the Financial Accounting Standards Board and the Securities and Exchange Commission. A change in these policies or interpretations could have a significant effect on our reported financial results, and could affect the reporting of transactions completed before the announcement of a change.

Our Business Depends on the Continued Service of Key Management and Technical Personnel.  Our success depends upon the continued contributions of our key management, sales, marketing, research and development and operational personnel, including Dr. Truchard, our Chairman and Chief Executive Officer, and other members of our senior management and key technical personnel. We have no agreements providing for the employment of any of our key employees for any fixed term and our key employees may voluntarily terminate their employment with us at any time. The loss of the services of one or more of our key employees in the future could have a material adverse effect on our operating results. We also believe our future success will depend upon our ability to attract and retain additional highly skilled management, technical, marketing, research and development, and operational personnel with experience in managing large and rapidly changing companies, as well as training, motivating and supervising employees. Our failure to attract or retain key technical or managerial talent could have an adverse effect on our operating results. We also recruit and employ foreign nationals to achieve our hiring goals primarily for engineering and software positions. There can be no guarantee that we will continue to be able to recruit foreign nationals at the current rate. There can be no assurance that we will be successful in retaining our existing key personnel or attracting and retaining additional key personnel. Failure to attract and retain a sufficient number of our key personnel could have a material adverse effect on our operating results.

Our Manufacturing Operations are Subject to a Variety of Environmental Regulations and Costs that May Have a Material Adverse Effect on our Business and Results of our Operations.  We must comply with many different governmental regulations related to the use, storage, discharge and disposal of toxic, volatile or otherwise hazardous chemicals used in our manufacturing operations in the U.S. and in Hungary. Although we believe that our activities conform to presently applicable environmental regulations, our failure to comply with present or future regulations could result in the imposition of fines, suspension of production or a cessation of operations. Any such environmental regulations could require us to acquire costly equipment or to incur other significant expenses to comply with such regulations. Any failure by us to control the use of or adequately restrict the discharge of hazardous substances could subject us to future liabilities.

We Are Subject to the Risk of Product Liability Claims.  Our products are designed to provide information upon which users may rely. Our products are also used in “real time” applications requiring extremely rapid and continuous processing and constant feedback. Such applications give rise to the risk that a failure or interruption of the system or application could result in economic damage or bodily harm. We attempt to assure the quality and accuracy of the processes contained in our products, and to limit our product liability exposure through contractual limitations on liability, limited warranties, express disclaimers and warnings as well as disclaimers contained in our “shrink wrap” license agreements with end-users. If our products contain errors that produce incorrect results on which users rely or cause failure or interruption of systems or processes, customer acceptance of our products could be adversely affected. Further, we could be subject to liability claims that could have a material adverse effect on our operating results or financial position. Although we maintain liability insurance for product liability matters, there can be no assurance that such insurance or the contractual limitations used by us to limit our liability will be sufficient to cover or limit any claims which may occur.

Provisions in Our Charter Documents and Delaware Law and Our Stockholder Rights Plan May Delay or Prevent an Acquisition of Us.  Our certificate of incorporation and bylaws and Delaware law contain provisions that could make it more difficult for a third party to acquire us without the consent of our Board of Directors. These provisions include a classified Board of Directors, prohibition of stockholder action by written consent, prohibition of stockholders to call special meetings and the requirement that the holders of at least 80% of our shares approve any business combination not otherwise approved by two-thirds of the Board of Directors. Delaware law also imposes some restrictions on mergers and other business combinations between us and any holder of 15% or more of our outstanding common stock. In addition, our Board of Directors has the right to issue preferred stock without stockholder approval, which could be used to dilute the stock ownership of a potential hostile acquirer. Our Board of Directors adopted a stockholders rights plan on January 21, 2004, pursuant to which we declared a dividend of one right for each share of our common stock outstanding as of May 10, 2004. This rights plan replaced a similar rights plan that had been in effect since our initial public offering in 1995. Unless redeemed by us prior to the time the rights are exercised, upon the occurrence of certain events, the rights will entitle the holders to receive upon exercise thereof shares of our preferred stock, or shares of an acquiring entity, having a value equal to twice the then-current exercise price of the right. The issuance of the rights could have the effect of delaying or preventing a change of control of us.

Compliance With Sections 302 and 404 of the Sarbanes-Oxley Act of 2002 is Costly and Challenging.  As required by Section 302 of the Sarbanes-Oxley Act of 2002, this Form 10-K contains our management’s certification of adequate disclosure controls and procedures as of December 31, 2011. This report on Form 10-K also contains a report by our management on our internal control over financial reporting including an assessment of the effectiveness of our internal control over financial reporting as of December 31, 2011. This Form 10-K also contains an attestation and report by our external auditors with respect to the effectiveness of our internal control over financial reporting under Section 404. While these assessments and reports did not reveal any material weaknesses in our internal control over financial reporting, compliance with Sections 302 and 404 is required for each future fiscal year end. We expect that the ongoing compliance with Sections 302 and 404 will continue to be both very costly and very challenging and there can be no assurance that material weaknesses will not be identified in future periods. Any adverse results from such ongoing compliance efforts could result in a loss of investor confidence in our financial reports and have an adverse effect on our stock price.

ITEM 1B.             UNRESOLVED STAFF COMMENTS

None.

ITEM 2.                 PROPERTIES

Our principal corporate and research and development activities are conducted in three buildings we own in Austin, Texas. We own approximately 69 acres of land in north Austin, Texas, on which are a 232,000 square foot office facility, a 140,000 square foot manufacturing and office facility, and a 380,000 square foot research and development facility. We also own a 136,000 square foot office building in Austin, Texas which is being leased to third-parties. Our principal manufacturing and distribution activities are conducted at our 239,000 square foot manufacturing and distribution facility in Debrecen, Hungary which we own. Our German subsidiary, National Instruments Engineering GmbH & Co. KG, owns a 25,500 square foot office building in Aachen, Germany in which a majority of its activities are conducted. National Instruments Engineering owns another 19,375 square foot office building in Aachen, Germany, which is partially leased to third-parties. National Instruments Corporation (UK) Limited, United Kingdom, owns a 29,270 square foot office building in Newbury, UK. We own approximately 23 acres of land comprised of two tracts in an industrial park in Penang, Malaysia. One tract is approximately 17 acres and the other tract is approximately 6 acres. We are in the process of constructing a new 314,000 square foot manufacturing, R&D, and G&A facility in Penang, Malaysia.

As of December 31, 2011, we also leased a number of sales and support offices in the U.S. and various countries throughout the world. Our sales and support facilities are currently being utilized below maximum capacity to allow for future headcount growth and design/construction cycles, as needed. We believe our existing facilities are adequate to meet our current requirements.

ITEM 3.                 LEGAL PROCEEDINGS

We are not currently a party to any material litigation. However, in the ordinary course of our business, we are involved in legal actions, both as plaintiff and defendant, and could incur uninsured liability in any one or more of them. We also periodically receive notifications from various third parties related to alleged infringement of patents or intellectual property rights, commercial disputes or other matters. See Note 13 – Commitments and Contingencies in the Notes to our Consolidated Financial Statements, for discussion of the accrual we have recorded in connection with our previous GSA contract. No assurances can be given with respect to the extent or outcome of any future litigation or dispute.

ITEM 4.                 RESERVED

PART II

ITEM 5.                 MARKET FOR THE REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES

Our common stock, $0.01 par value, began trading on The NASDAQ Stock Market under the symbol NATI effective March 13, 1995. Prior to that date, there was no public market for our common stock. The high and low closing prices for our common stock, as reported by Nasdaq for the two most recent fiscal years, are as indicated in the following table:

	High		Low
2011
First Quarter 2011	$	32.80	$	25.26
Second Quarter 2011		32.93		27.50
Third Quarter 2011		31.02		22.16
Fourth Quarter 2011		28.29		21.72
2010
First Quarter 2010	$	22.46	$	18.83
Second Quarter 2010		24.47		19.88
Third Quarter 2010		22.29		18.91
Fourth Quarter 2010		25.29		21.30

At the close of business on January 27, 2012, there were approximately 426 holders of record of our common stock and approximately 27,265 beneficial holders of our common stock.

We believe factors such as quarterly fluctuations in our results of operations, announcements by us or our competitors, technological innovations, new product introductions, governmental regulations, litigation, changes in earnings estimates by analysts or changes in our financial guidance may cause the market price of our common stock to fluctuate, perhaps substantially. In addition, stock prices for many technology companies fluctuate widely for reasons that may be unrelated to their operating results. These broad market and industry fluctuations may adversely affect the market price of our common stock.

Our cash dividend payments for the two most recent fiscal years, on a per share basis, are indicated in the following table. The dividends were paid on the dates set forth below:

	Dividend Amount
2011
February 21, 2011	$	0.10
May 31, 2011		0.10
August 29, 2011		0.10
November 28, 2011		0.10
2010
March 1, 2010	$	0.09
June 1, 2010		0.09
August 30, 2010		0.09
November 29, 2010		0.09

Our policy as to future dividends will be based on, among other considerations, our views on changes in tax rates applied to dividend income, potential future capital requirements related to research and development, expansion into new market areas, strategic investments and business acquisitions, share dilution management, legal risks, and challenges to our business model.

On January 24, 2012, our Board of Directors declared a quarterly cash dividend of $0.14 per common share, payable March 5, 2012, to stockholders of record on February 13, 2012.

See Item 12 for information regarding securities authorized for issuance under our equity compensation plans.

Performance Graph

The following graph compares the cumulative total return to holders of NI’s common stock from December 31, 2006 to December 31, 2011 to the cumulative return over such period of the (i) Nasdaq Composite Index and (ii) Russell 2000 Index. We use the Russell 2000 Index due to the fact that we have not been able to identify a published industry or line of business index that we believe appropriately reflects our industry or line of business. We considered that our primary competitors are divisions of large corporations that have other significant business operations such that any index comprised of such competitors would not be reflective of our industry or line of business. We have also considered using a peer group index but do not believe such index is appropriate as we have not been able to identify other public companies that we believe are principally in the same line of business as we are.

The graph assumes that $100 was invested on December 31, 2006 in NI’s common stock and in each of the other two indices and the reinvestment of all dividends, if any. Stockholders are cautioned against drawing any conclusions from the data contained therein, as past results are not necessarily indicative of future performance.

The information contained in the Performance Graph shall not be deemed to be “soliciting material” or to be “filed” with the SEC, nor shall such information be incorporated by reference into any future filing under the Securities Act of 1933, as amended (the “Securities Act”), or the Exchange Act, except to the extent that NI specifically incorporates it by reference into any such filing. The graph is presented in accordance with SEC requirements.

Issuer Purchases of Equity Securities

Period	Total number of shares purchased		Average price paid per share		Total number of shares purchased as part of publicly announced plans or programs		Maximum number of shares that may yet be purchased under the plans or programs (1)
October 1, 2011 to October 31, 2011		-		-		-		3,932,245
November 1, 2011 to November 30, 2011		-		-		-		3,932,245
December 1, 2011 to December 31, 2011		-		-		-		3,932,245
Total		-		-		-

(1) For the past several years, we have maintained various stock repurchase programs. At December 31, 2011, there were 3,932,245 shares available for repurchase under the plan approved on April 21, 2010. This repurchase plan does not have an expiration date.

ITEM 6.                 SELECTED CONSOLIDATED FINANCIAL DATA

The following selected consolidated financial data should be read in conjunction with our consolidated financial statements, including the Notes to Consolidated Financial Statements contained in this Form 10-K. The information set forth below is not necessarily indicative of the results of our future operations. The information should be read in conjunction with “Management’s Discussion and Analysis of Financial Condition and Results of Operations.”

	Years Ended December 31, (in thousands, except per share data)
	2011			2010			2009		2008			2007
Statements of Income Data:
Net sales:
Americas	$	411,006		$	359,895		$	292,999	$	355,878		$	331,482
Europe .		308,619			261,118			210,188		267,373			230,940
Asia Pacific		304,548			252,207			173,407		197,286			177,956
Consolidated net sales		1,024,173			873,220			676,594		820,537			740,378
Cost of sales		240,964			200,083			169,884		207,109			185,267
Gross profit		783,209			673,137			506,710		613,428			555,111
Operating expenses:
Sales and marketing		388,768			319,606			269,267		307,409			264,060
Research and development		199,071			158,149			132,974		143,140			126,515
General and administrative		82,658			67,069			57,938		67,162			62,445
Total operating expenses		670,497			544,824			460,179		517,711			453,020
Operating income		112,712			128,313			46,531		95,717			102,091
Other income (expense):
Interest income		1,319			1,391			1,629		5,996			9,822
Net foreign exchange gain (loss)		(2,755	)		(2,585	)		734		(3,737	)		1,672
Other income (expense), net		(142	)		993			1,351		161			(158	)
Income before income taxes		111,134			128,112			50,245		98,137			113,427
Provision for income taxes		17,062			18,996			33,160		13,310			6,394
Net income	$	94,072		$	109,116		$	17,085	$	84,827		$	107,033
Basic earnings per share	$	0.79		$	0.93		$	0.15	$	0.72		$	0.90
Weighted average shares outstanding - basic		119,836			116,973			116,280		117,850			119,202
Diluted earnings per share	$	0.78		$	0.92		$	0.15	$	0.71		$	0.88
Weighted average shares outstanding - diluted		121,220			118,572			117,039		119,272			121,564
Cash dividends declared per common share	$	0.40		$	0.35		$	0.32	$	0.29		$	0.23

	December 31, (in thousands)
	2011		2010		2009		2008		2007
Balance Sheet Data:
Cash and cash equivalents	$	142,608	$	219,447	$	201,465	$	229,400	$	194,839
Short-term investments		223,504		131,215		87,196		6,220		93,838
Working capital		496,629		484,406		413,759		398,292		419,874
Total assets		1,154,294		959,682		813,029		832,591		818,812
Long-term debt, net of current portion		-		-		-		-		-
Total stockholders’ equity		852,011		744,545		654,420		664,438		661,086

ITEM 7.                 MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

The following “Management’s Discussion and Analysis of Financial Condition and Results of Operations” contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. Any statements contained herein regarding our future financial performance or operations (including, without limitation, statements to the effect that we “believe,” “expect,” “plan,” “may,” “will,” “project,” “continue,” or “estimate” or other variations thereof or comparable terminology or the negative thereof) should be considered forward-looking statements. Actual results could differ materially from those projected in the forward-looking statements as a result of a number of important factors including those set forth under the heading “Risk Factors” beginning on page 11, and elsewhere in this Form 10-K. Although we believe that the expectations reflected in the forward-looking statements are reasonable, we cannot guarantee future results, levels of activity, performance or achievements. You should not place undue reliance on these forward-looking statements. We disclaim any obligation to update information contained in any forward-looking statement.

Overview

National Instruments Corporation (“we”, “us” or “our”) designs, manufactures and sells tools to engineers and scientists that accelerate productivity, innovation and discovery. Our graphical system design approach to engineering provides an integrated software and hardware platform that speeds the development of systems needing measurement and control. We believe our long-term vision and focus on technology supports the success of our customers, employees, suppliers and shareholders. We sell to a large number of customers in a wide variety of industries. We have been profitable in every year since 1990. No single customer accounted for more than 4% of our sales in 2011 or 2010, or 3% of our sales in 2009.

The key strategies that management focuses on in running our business are the following:

Expanding our broad customer base

We strive to increase our already broad customer base by serving a large market on many computer platforms, through a global marketing and distribution network. We also seek to acquire new technologies and expertise from time to time to open new opportunities for our existing product portfolio.

Maintaining a high level of customer satisfaction

To maintain a high level of customer satisfaction we strive to offer innovative, modular and integrated products through a global sales and support network. We strive to maintain a high degree of backwards compatibility across different platforms to preserve the customer’s investment in our products. In this time of intense global competition, we believe it is crucial that we continue to offer products with quality and reliability, and that our products provide cost-effective solutions for our customers.

Leveraging external and internal technology

Our product strategy is to provide superior products by leveraging generally available technology, supporting open architectures on multiple platforms and by leveraging our core technologies such as custom application specific integrated circuits (“ASICs”) across multiple products.

We sell into test and measurement (“T&M”) and industrial/embedded applications in a broad range of industries and as such are subject to the economic and industry forces which drive those markets. It has been our experience that the performance of these industries and our performance is impacted by general trends in industrial production for the global economy and by the specific performance of certain vertical markets that are intensive consumers of measurement technologies. Examples of these markets are semiconductor capital equipment, telecom, defense, aerospace and automotive.

In assessing our business, we consider the trends in the Global Purchasing Managers Index (“PMI”) published by JP Morgan, global industrial production as well as industry reports on the specific vertical industries that we target. A reading above 50 is indicative of expansion in the global industrial economy. Our business is sensitive to fluctuations in general economic conditions, both in the U.S. and globally. Historically, our business cycles have generally followed the expansion and contraction cycles in the global industrial economy as measured by the PMI. The most recent reading for December 2011, showed the PMI had increased to 50.8 up from readings below 50 for the previous three months, but continues to indicate overall weakness in the global industrial economy. We are unable to predict whether the industrial economy, as measured by the PMI, will strengthen or contract during 2012. If the industrial economy, as measured by the PMI contract or remains at a neutral reading at or around 50, indicating general weakness, it could have an adverse effect on the spending patterns of businesses including our current and potential customers which could adversely affect our revenues and result of operations.

We distribute our software and hardware products primarily through a direct sales organization. We also use independent distributors, OEMs, VARs, system integrators and consultants to market our products. Sales through any one of these channels account for less than 5% of our total sales in 2011. We have sales offices in the U.S. and sales offices and distributors in key international markets. Sales outside of the Americas accounted for approximately 60% of our revenues in 2011, 59% of our revenues in 2010 and 57% of our revenues in 2009. The vast majority of our foreign sales are denominated in the customers’ local currency, which exposes us to the effects of changes in foreign currency exchange rates. We expect that a significant portion of our total revenues will continue to be derived from international sales. (See Note 12 - Segment information of Notes to Consolidated Financial Statements for details concerning the geographic breakdown of our net sales, operating income, interest income and long-lived assets).

We manufacture a substantial majority of our products at our facilities in Debrecen, Hungary. Additional production primarily of low volume or newly introduced products is done in Austin, Texas. Our product manufacturing operations can be divided into four areas: electronic circuit card and module assembly; chassis and cable assembly; technical manuals and product support documentation; and software duplication. We manufacture most of the electronic circuit card assemblies and modules in-house, although subcontractors are used from time to time. We have used a subcontractor in Asia to manufacture a significant portion of our chassis but most of that production was moved in house during 2010. We manufacture some of our electronic cable assemblies in-house, but many assemblies are produced by subcontractors. We primarily subcontract our software duplication, our technical manuals and product support documentation.

We believe that our long-term growth and success depend on delivering high quality software and hardware products on a timely basis. Accordingly, we focus significant efforts on research and development. We focus our research and development efforts on enhancing existing products and developing new products that incorporate appropriate features and functionality to be competitive with respect to technology, price and performance. Our success also is dependent on our ability to obtain and maintain patents and other proprietary rights related to technologies used in our products. We have engaged in litigation and where necessary, will likely engage in future litigation to protect our intellectual property rights. In monitoring and policing our intellectual property rights, we have been and may be required to spend significant resources.

Our operating results fluctuate from period to period due to changes in global economic conditions and a number of other factors. As a result, we believe our historical results of operations should not be relied upon as indications of future performance. There can be no assurance that our net sales will grow or that we will remain profitable in future periods.

Results of Operations

The following table sets forth, for the periods indicated, the percentage of net sales represented by certain items reflected in our Consolidated Statements of Income:

	Years Ended December 31,
	2011			2010			2009
Net sales:
Americas		40.1	%		41.2	%		43.3	%
Europe		30.1			29.9			31.1
Asia Pacific		29.8			28.9			25.6
Consolidated net sales		100.0			100.0			100.0
Cost of sales		23.5			22.9			25.1
Gross profit		76.5			77.1			74.9
Operating expenses:
Sales and marketing		38.0			36.6			39.8
Research and development		19.4			18.1			19.6
General and administrative		8.1			7.7			8.6
Total operating expenses		65.5			62.4			68.0
Operating income		11.0			14.7			6.9
Other income (expense):
Interest income		0.2			0.2			0.2
Net foreign exchange gain (loss)		(0.3	)		(0.3	)		0.1
Other income, net		-			0.1			0.2
Income before income taxes		10.9			14.7			7.4
Provision for income taxes		1.7			2.2			4.9
Net income		9.2	%		12.5	%		2.5	%

Results of Operations for years ended December 31, 2011, 2010 and 2009

We reported continued revenue growth and all time record revenue of $1,024 million in 2011. We believe our strategic investments in innovation and customer adoption are keys to our future growth, and we continue to be optimistic about our position in the industry.

Net Sales.  Our consolidated net sales were $1,024 million, $873 million and $677 million for the years ended December 31, 2011, 2010 and 2009, respectively, an increase of 17% in 2011 following an increase of 29% in 2010. Product sales were $956 million, $807 million and $624 million for the years ended December 31, 2011, 2010 and 2009, respectively, an increase of 18% in 2011 following an increase of 29% in 2010. Software maintenance sales were $82 million, $66 million and $53 million for the years ended December 31, 2011, 2010 and 2009, respectively, an increase of 24% in 2011 following an increase of 25% in 2010. During 2011, revenue from our acquisitions was approximately $50 million compared to $24 million in 2010. The increase in revenue from our acquisitions in 2011 is attributable to the acquisitions of AWR Corporation and PhaseMatrix which were done in 2011. In 2011, products in the areas of graphical system design, which comprised approximately 94% of our revenue, saw a year-over-year increase of 21% and instrument control products, which comprised approximately 6% of our revenue, saw a year-over-year increase of 2%. In 2010, products in the areas of graphical system design which comprised approximately 93% of our revenues saw a year-over-year increase of 29%, and instrument control products which comprised approximately 7% of our revenues saw a year-over-year increase of 35%. Revenues from our instrument control products are the most sensitive to the cycles of the global industrial economy. The revenue increases in 2011 and 2010 are attributed to increases in sales volume across all regions of our business. We did not take any significant action with regard to pricing during the years ended December 31, 2011, 2010 and 2009.

Large orders, defined as orders with a value greater than $20,000, grew by 25%, during 2011 following growth of 44% during 2010. During 2011, 2010 and 2009 these large orders were 45%, 42% and 38%, respectively, of our total sales. Larger orders may be more sensitive to changes in the global industrial economy, may be subject to greater discount variability and may contract at a faster pace during an economic downturn.

For the years ended December 31, 2011, 2010 and 2009, net sales in the Americas were $411 million, $360 million and $293 million, respectively, an increase of 14% in 2011 following an increase of 23% in 2010. Sales in the Americas, as a percentage of consolidated sales were 40%, 41% and 43%, respectively, over the three year period. In Europe, net sales were $309 million, $261 million and $210 million, respectively, an increase of 18% in 2011 following an increase of 24% in 2010. Sales in Europe, as a percentage of consolidated sales were 30%, 30% and 31%, respectively, over the three year period. In Asia, sales were $305 million, $252 million and $173 million, respectively, an increase of 21% in 2011 following an increase of 45% in 2010. Sales in Asia, as a percentage of consolidated sales were 30%, 29% and 26%, respectively, over the three year period. We anticipate that sales growth in Asia may continue to be strong relative to the Americas and Europe and continue to grow as a percentage of our total net sales.

For the year ended December 31, 2011, net sales in the Americas were negatively impacted by the $13 million accrual related to our previous GSA contract. We expect sales outside of the Americas to continue to represent a significant portion of our revenue. We intend to continue to expand our international operations by increasing our presence in existing markets, adding a presence in some new geographical markets and continuing the use of distributors to sell our products in some countries.

Almost all of the sales made by our direct sales offices in the Americas, outside of the U.S., in Europe and in Asia Pacific are denominated in local currencies, and accordingly, the U.S. dollar equivalent of these sales is affected by changes in foreign currency exchange rates. For 2011, in local currency terms, our consolidated sales increased by $128 million or 15%, Americas sales increased by $50 million or 14%, European sales increased by $37 million or 16%, and sales in Asia Pacific increased by $41 million or 16%. During this same period, the change in exchange rates had the effect of increasing our consolidated sales by $27 million or 3%, increasing Americas sales by $1 million or 0.4%, increasing European sales by $13 million or 5%, and increasing sales in Asia Pacific by $13 million or 5%.

For 2010, in local currency terms, our consolidated sales increased by $177 million or 26%, Americas sales increased by $63 million or 21%, European sales increased by $51 million or 25%, and sales in Asia Pacific increased by $64 million or 37%. During this same period, the change in exchange rates had the effect of increasing our consolidated sales by $13 million or 2%, increasing Americas sales by $4 million or 2%, decreasing European sales by $6 million or 3%, and increasing sales in Asia Pacific by $15 million or 9%.

To help protect against a reduction in value caused by a fluctuation in foreign currency exchange rates of forecasted foreign currency cash flows resulting from international sales, we have instituted a foreign currency cash flow hedging program. We hedge portions of our forecasted revenue denominated in foreign currencies with forward and purchased option contracts. During 2011, these hedges had the effect of decreasing our consolidated sales by $3.9 million. During 2010, these hedges had the effect of increasing our consolidated sales by $5.9 million. (See Note 4 - Derivative instruments and hedging activities of Notes to Consolidated Financial Statements for further discussion regarding our cash flow hedging program and its related impacted on our consolidated sales for 2011 and 2010).

Gross Profit. For the years ended December 31, 2011, 2010 and 2009, gross profit was $783 million, $673 million and $507 million, respectively. As a percentage of sales, gross profit was 77%, 77% and 75% in 2011, 2010 and 2009, respectively. In 2011 and 2010, we continued to focus on cost reduction measures throughout our manufacturing cycle and continued to see the benefit of those efforts. These cost reduction measures will continue to be an area of focus for us in 2012. These measures along with robust sales growth have allowed us to achieve and maintain stability in our gross margin percentage. Our gross profit for the year ended December 31, 2011, was negatively impacted by the $13 million accrual related to our previous GSA contract, which reduced our revenue.

During 2011 and 2010, the change in exchange rates had the effect of increasing our cost of sales by $4.7 million or 2% and increasing our cost of sales by $4.8 million or 3%, respectively. To help protect against changes in our cost of sales caused by a fluctuation in foreign currency exchange rates of forecasted foreign currency cash flows, we have a foreign currency cash flow hedging program. We hedge portions of our forecasted costs of sales denominated in foreign currencies with forward contracts. During 2011 and 2010, these hedges had the effect of decreasing our cost of sales by $1.4 million and decreasing our cost of sales by $2.5 million, respectively. (See Note 4 - Derivative instruments and hedging activities of Notes to Consolidated Financial Statements for further discussion regarding our cash flow hedging program and its related impacted on our consolidated sales for 2011 and 2010).

Operating Expenses. For the years ended December 31, 2011, 2010 and 2009, operating expenses were $670 million, $545 million and $460 million, respectively, an increase of 23% in 2011, following an increase of 18% in 2010. This increase in our operating expenses in 2011 was due to higher personnel related expenses of $48 million which included commissions, variable compensation and benefits as well as the fact that temporary cost cutting measures enacted in 2009 were still in place in January 2010, higher expenses related to marketing and outside services of $25 million, higher expenses for building, equipment and supplies of $12 million, higher travel related expenses of $11 million, higher equity based compensation of $4.2 million and higher software development costs of $3.7 million. Over the same period, the net impact of changes in foreign currency exchange rates increased our operating expense by $19 million. The increase in personnel expenses is related to a net increase in our headcount of 955 employees, including 150 related to our acquisitions. A large portion of our new hires were recent college graduates. Therefore, we saw the largest expense impact of our hiring during the second half of 2011.

The increase in our operating expenses in 2010 was due to higher personnel related expenses of $63 million which included commissions, variable compensation and benefits. The increase in personnel expenses is related to a net increase in our overall headcount of 160 employees as well as the termination of temporary cost cutting measures that were put in place during 2009. Those temporary cost cutting measures reduced our operating expenses by $16 million in 2009. In addition, the overall increase in expenses in 2010 is attributed to higher travel related expenses of $7 million and higher advertising, tradeshows and other marketing expenses of $5 million. In addition, the net impact of changes in foreign currency exchange rates increased our operating expense by $9 million in 2010.

For the years ended December 31, 2011, 2010 and 2009, operating expenses as a percentage of net sales were 66%, 62% and 68%, respectively. The year over year increase in our operating expenses as a percentage of net sales in 2011 compared to 2010 is attributed to the fact that we grew our overall operating expenses by 23% while our net sales grew by 17%. For 2010, the decrease in our operating expenses as a percent of sales was due to the fact that we grew our overall operating expense by 18% while our net sales grew by 29%.

We believe that our long-term growth and success depends on developing high quality software and hardware products and delivering those products to our customers on a timely basis. To that end, we made investments in research and development and our field sales force a priority in 2011. In 2011, we increased our research and development staff by 339 or 22% and our field sales force by 467 or 20%. During 2012, we expect to continue our investment in these areas although we expect the rate of growth to decrease.

Operating Income.For the years ended December 31, 2011, 2010 and 2009, operating income was $113 million, $128 million and $47 million, respectively, a decrease of 12% in 2011, following an increase of 176% in 2010. As a percentage of net sales, operating income was 11%, 15% and 7%, respectively, over the three year period. The decrease in our operating income as a percent of sales during 2011 can be attributed to our overall increase in operating expenses of 23%. The increase in our operating income as a percent of sales during 2010 can be attributed to our overall increase in net sales of 29% as well as the increase in our gross profit margin percentage from 75% to 77%. Our operating income for the year ended December 31, 2011, was negatively impacted by the $13 million accrual related to our previous GSA contract, which reduced our revenue.

Interest Income.Interest income was $1.3 million, $1.4 million and $1.6 million for the years ended December 31, 2011, 2010 and 2009, respectively, a decrease of 5% in 2011, following a decrease of 15% in 2010. During 2011, we continued to see low yields for high quality investment alternatives that comply with our corporate investment policy. We do not expect yields in these types of investments to increase in 2012. For 2010, the decrease was attributable to significant decreases in investment yields for high grade treasury, municipal and corporate bonds. The source of interest income is from the investment of our cash and short-term investments.

Net Foreign Exchange Gain (Loss).  Net foreign exchange gain (loss) was $(2.8) million, $(2.6) million, and $734,000 for the years ended December 31, 2011, 2010 and 2009, respectively.  These results are attributable to movements in the foreign currency exchange rates between the U.S. dollar and foreign currencies in subsidiaries for which our functional currency is not the U.S. dollar.  During the first half of 2011, the U.S. dollar generally declined against most of the major currencies in the markets in which we do business. During the six month period ended December 31, 2011, we saw the U.S. dollar turn significantly stronger against most of the major currencies in the markets in which we do business. We cannot predict to what degree or how long this recent volatility in the foreign currency exchange markets will continue. In the past, we have noted that significant volatility in foreign currency exchange rates in the markets in which we do business has had a significant impact on the revaluation of our foreign currency denominated firm commitments, on our ability to forecast our U.S. dollar equivalent revenues and expenses and on the effectiveness of our hedging programs. In the past, these dynamics have also adversely affected our revenue growth in international markets and may pose similar challenges in the future. We recognize the local currency as the functional currency in virtually all of our international subsidiaries.

We utilize foreign currency forward contracts to hedge our foreign denominated net foreign currency balance sheet positions to help protect against the change in value caused by a fluctuation in foreign currency exchange rates. We typically hedge up to 90% of our outstanding foreign denominated net receivable or payable positions and typically limit the duration of these foreign currency forward contracts to approximately 90 days. The gain or loss on these derivatives as well as the offsetting gain or loss on the hedged item attributable to the hedged risk is recognized in current earnings under the line item “Net foreign exchange gain (loss)”. Our hedging strategy reduced our foreign exchange losses by $959,000 in 2011, increased our foreign exchange losses by $1.6 million in 2010 and reduced our foreign exchange gain by $1.7 million in 2009.

Provision for Income Taxes.  For the years ended December 31, 2011, 2010 and 2009, our provision for income taxes reflected an effective tax rate of 15%, 15% and 66%, respectively. The factors that caused our effective tax rate to change in 2010 compared to 2009 are detailed in the table below:

	Years Ended December 31, 2010
	(Unaudited)
Effective tax rate for 2009		66	%
Change in valuation allowance related to deferred tax assets recorded during the period		(17	)
Increased profits in foreign jurisdictions with reduced income tax rates		(3	)
Change in non-deductible stock-based compensation expense as a percentage of net income		(6	)
Enhanced deduction for certain research and development expenses in 2010		(10	)
Change in intercompany profit		(15	)
Change in research and development tax credits as a percent of net income		1
Other		(1	)
Effective tax rate for 2010		15	%

(See Note 9 – Income taxes of Notes to Consolidated Financial Statements for further discussion regarding changes in our effective tax rate and a reconciliation of income taxes at the U.S. federal statutory income tax rate of 35% to our effective tax rate).

Quarterly results of operations

The following quarterly results have been derived from unaudited consolidated financial statements that, in the opinion of management, reflect all adjustments (consisting only of normal recurring adjustments) necessary for a fair presentation of such quarterly information. The operating results for any quarter are not necessarily indicative of the results to be expected for any future period. You should read the following tables presenting our quarterly results of operations in conjunction with the consolidated financial statements and related notes contained elsewhere in this Annual Report on Form 10-K. The unaudited quarterly financial data for each of the eight quarters in the two years ended December 31, 2011 are as follows (in thousands, except per share data):

	Three Months Ended
	Mar. 31, 2011		Jun. 30, 2011		Sep. 30, 2011		Dec. 31, 2011
Net sales	$	237,850	$	253,284	$	254,988	$	278,051
Gross profit		185,374		197,398		189,773		210,664
Operating income		36,512		32,942		10,756		32,502
Net income		30,461		26,548		12,736		24,327
Basic earnings per share	$	0.26	$	0.22	$	0.11	$	0.20
Weighted average shares outstanding-basic		118,693		119,736		120,308		120,582
Diluted earnings per share	$	0.25	$	0.22	$	0.11	$	0.20
Weighted average shares outstanding-diluted		120,443		121,161		121,102		121,453
Dividends declared per share	$	0.10	$	0.10	$	0.10	$	0.10

	Three Months Ended
	Mar. 31, 2010		Jun. 30, 2010		Sep. 30, 2010		Dec. 31, 2010
Net sales	$	191,091	$	211,717	$	220,449	$	249,963
Gross profit		147,849		163,078		168,546		193,664
Operating income		19,522		30,483		31,689		46,619
Net income		18,353		24,602		28,133		38,028
Basic earnings per share	$	0.16	$	0.21	$	0.24	$	0.32
Weighted average shares outstanding-basic		116,070		116,898		117,264		117,639
Diluted earnings per share	$	0.16	$	0.21	$	0.24	$	0.32
Weighted average shares outstanding-diluted		117,652		118,488		118,293		119,002
Dividends declared per share	$	0.09	$	0.09	$	0.09	$	0.09

Other operational metrics

We believe that the following additional unaudited operational metrics assists investors in assessing our operational performance relative to our peers and to our historical results.

Acquisition related deferred revenue excluded from revenue and GSA accrual reduction to revenue. For the three month periods and years ended December 31, 2011 and 2010, the excluded acquisition related deferred revenue and the reduction of revenue resulting from our GSA accrual were as follows (in thousands):

	Three Months Ended					Years Ended
	December 31,					December 31,
	2011			2010		2011			2010
Revenue
Acquisition related deferred revenue	$	1,912		$	-	$	4,730		$	-
GSA accrual		-			-		13,107			-
(Benefit from) income taxes		(669	)		-		(6,242	)		-
Total	$	1,243		$	-	$	11,595		$	-

Charges related to stock-based compensation, amortization of acquired intangibles and acquisition related transaction costs. For the three month periods and years ended December 31, 2011 and 2010, the gross charges related to stock-based compensation as a component of cost of sales, sales and marketing, research and development, and general and administrative expenses and the total charges were as follows (in thousands):

	Three Months Ended						Years Ended
	December 31,						December 31,
	2011			2010			2011			2010
Stock-based compensation
Cost of sales	$	411		$	331		$	1,527		$	1,345
Sales and marketing		2,702			1,851			9,711			7,911
Research and development		2,625			1,774			8,870			6,903
General and administrative		831			645			3,111			2,636
(Benefit from) income taxes		(2,041	)		(1,549	)		(6,827	)		(5,971	)
Total	$	4,528		$	3,052		$	16,392		$	12,824

For the three month periods and years ended December 31, 2011 and 2010, the gross charges related to the amortization of acquisition related intangibles as a component of cost of sales, sales and marketing and other income (expense), net and the total charges were as follows (in thousands):

	Three Months Ended						Years Ended
	December 31,						December 31,
	2011			2010			2011			2010
Amortization of acquired intangibles
Cost of sales	$	2,469		$	921		$	7,064		$	3,486
Sales and marketing		447			75			1,071			386
General and administrative		-			15			-			15
Other income (expense), net		190			-			955			-
(Benefit from) income taxes		(993	)		(298	)		(2,736	)		(1,202	)
Total	$	2,113		$	713		$	6,354		$	2,685

For the three month periods and years ended December 31, 2011 and 2010, the gross charges related to acquisition related transaction costs as a component of cost of sales, sales and marketing, research and development and general and administrative expenses and the total charges were as follows (in thousands):

	Three Months Ended					Years Ended
	December 31,					December 31,
	2011			2010		2011			2010
Acquisition related transaction costs
Cost of sales	$	32		$	-	$	54		$	-
Sales and marketing		220			-		1,349			-
Research and development		106			-		176			-
General and administrative		47			-		505			-
(Benefit from) income taxes		(142	)		-		(288	)		-
Total	$	263		$	-	$	1,796		$	-

Liquidity and Capital Resources

Working Capital, Cash and Cash Equivalents and Short-term Investments.  The following table presents our working capital, cash and cash equivalents and marketable securities (in thousands):

	December 31, 2011		December 31, 2010		Increase/ (Decrease)
Working capital	$	496,629	$	484,406	$	12,223
Cash and cash equivalents (1)		142,608		219,447		(76,839	)
Short-term investments (1)		223,504		131,215		92,289
Total cash, cash equivalents and short investments	$	366,112	$	350,662	$	15,450

(1)         Included in working capital

During 2011, our working capital increased by $12 million. Factors contributing to this increase in our working capital were an increase in our cash, cash equivalents and short-term investments of $15 million, an increase in accounts receivable of $30 million and an increase in inventory of $14 million, offset by an increase in accounts payable of $8 million, an increase in deferred revenue of $18 million and an increase in accrued expenses of $21 million. The increase in our working capital accounts can be attributed to our overall business growth during the year ended December 31, 2011. The change in our cash, cash equivalents and short-term investments is discussed in more detail below under the heading Cash Provided and (Used) in the Years ended December 31, 2011 and 2010.

Our cash and cash equivalent balances are held in numerous financial institutions throughout the world, including substantial amounts held outside of the U.S., however, the majority of our cash and investments that are located outside of the U.S. are denominated in U.S. dollars with the exception of $32 million U.S. dollar equivalent of German government sovereign debt that is denominated in Euro. Our German government sovereign debt holdings have a maximum maturity of 18 months and carry Aaa/AAA ratings. At December 31, 2011, we had $366 million in cash, cash equivalents and short-term investments. Approximately $67 million or 18% of these amounts were held in domestic accounts with various financial institutions and $299 million or 82% was held in accounts outside of the U.S. with various financial institutions. Of our short-term investments $30 million or 13% is held in our investment accounts in the U.S. and $194 million or 87% is held in investment accounts of our foreign subsidiaries. Most of the amounts held outside of the U.S. could be repatriated to the U.S., but under current law, would be subject to U.S. federal income taxes, less applicable foreign tax credits. We have provided for the U.S. federal tax liability on these amounts for financial statement purposes, except for foreign earnings that are considered indefinitely reinvested outside of the U.S. Repatriation could result in additional U.S. federal income tax payments in future years. We utilize a variety of tax planning and financing strategies with the objective of having our worldwide cash available in the locations in which it is needed.

Cash Provided and (Used) in the Years ended December 31, 2011 and 2010.  Cash and cash equivalents decreased to $143 million at December 31, 2011 from $219 million at December 31, 2010. The following table summarizes the proceeds and (uses) of cash (in thousands):

	December 31,
	2011			2010
Cash provided by operating activities	$	169,899		$	145,058
Cash (used by) investing activities		(236,833	)		(96,544	)
Cash (used by) financing activities		(9,905	)		(30,532	)
Net (decrease)/increase in cash equivalents		(76,839	)		17,982
Cash and cash equivalents at beginning of year		219,447			201,465
Cash and cash equivalents at end of year	$	142,608		$	219,447

For the years ended December 31, 2011 and 2010, cash provided by operating activities was $170 million and $145 million, respectively. Year over year, we saw a decrease in net income of $15 million while cash provided by operating assets and liabilities increased by $41 million.

Accounts receivable increased to $157 million at December 31, 2011 compared to $127 million at December 31, 2010. Days sales outstanding was 51 days at December 31, 2011, compared to 48 days at December 31, 2010. We typically bill customers on an open account basis subject to our standard net 30 day payment terms. If, in the longer term, our revenue increases, it is likely that our accounts receivable balance will also increase. Our accounts receivable could also increase if customers delay their payments or if we grant extended payment terms to customers, both of which are more likely to occur during challenging economic times when our customers may face issues gaining access to sufficient funding or credit.

Consolidated inventory balances increased to $132 million at December 31, 2011 from $118 million at December 31, 2010. Inventory turns were 1.9 at December 31, 2011, compared to 2.0 at December 31, 2010. Inventory increased by $14 million during the year ended December 31, 2011, as we took actions to support the growth in our overall business. The slower growth we saw in the European region during the fourth quarter of 2011 also contributed to the overall increase in our inventory. Our inventory levels will continue to be determined based upon our anticipated demand for products and our need to keep sufficient inventory on hand to meet our customers’ demands. Such considerations are balanced against the risk of obsolescence or potentially excess inventory levels. Rapid changes in customer demand could have a significant impact on our inventory balances in future periods.

Investing activities used cash of $237 million during the year ended December 31, 2011, as the result of our acquisitions of AWR Corporation (AWR) and Phase Matrix Inc. (PMI) for $45 million, net of cash received, and $28 million, net of cash received, respectively, as well as the purchase of property and equipment and other intangibles of $60 million, the capitalization of internally developed software of $12 million, and the net purchase of $91 million of short-term investments. For the year ended December 31, 2010, Investing activities used cash of $97 million, which was the result of the our net purchase of short-term investments of $44 million, the purchase of property and equipment of $28 million, capitalization of internally developed software of $16 million, acquisition of other intangibles of $4.2 million and business acquisitions, net of cash received of $4.2 million. (See Note 15 – Acquisitions of Notes to Consolidated Financial Statements for further discussion regarding the acquisition of AWR and PMI).

Financing activities used cash of $10 million during the year ended December 31, 2011, which was the result of $48 million used to pay dividends to our stockholders offset by $33 million received from the issuance of our common stock from the exercise of stock options and under our employee stock purchase plan as well as a tax benefit of $5.2 million. For the year ended December 31, 2010, financing activities used $31 million, which was the result of $42 million used to repurchase our common stock and $41 million used to pay dividends to our stockholders, offset by $52 million received as a result of the issuance of our common stock from the exercise of stock options and sales of our common stock through our employee stock purchase plan.

From time to time, our Board of Directors has authorized various programs to repurchase shares of our common stock depending on market conditions and other factors. Under such programs, we repurchased a total of 2,089,098 and 2,165,161 shares of our common stock at weighted average prices of $20.04 and $15.97 per share, in the years ended December 31, 2010 and 2009, respectively. On April 21, 2010, our Board of Directors approved a new share repurchase program that increased the aggregate number of shares of common stock that we are authorized to repurchase from 1,011,147 to 4.5 million. At December 31, 2011, there were 3,932,245 shares remaining available for repurchase under this plan. This repurchase plan does not have an expiration date. We did not repurchase any shares of our common stock during the year ended December 31, 2011.

During the year ended December 31, 2011, we received less proceeds from the exercise of stock options compared to the year ended December 31, 2010. The timing and number of stock option exercises and the amount of cash proceeds we receive through those exercises are not within our control and in the future, we may not generate as much cash from the exercise of stock options as we have in the past. Moreover, since 2005, it has been our practice to issue restricted stock units and not stock options to eligible employees which will reduce the number of stock options available for exercise in the future. Unlike the exercise of stock options, the issuance of shares upon vesting of restricted stock units does not result in any cash proceeds to us.

Contractual Cash Obligations.  The following summarizes our contractual cash obligations as of December 31, 2011 (in thousands):

	Payments Due by Period
	Total		2012		2013		2014		2015		2016		Beyond
Long-term debt	$	-	$	-	$	-	$	-	$	-	$	-	$	-
Capital lease obligations		-		-		-		-		-		-		-
Operating leases		54,310		14,426		10,252		8,747		7,707		4,857		8,321
Total contractual cash obligations	$	54,310	$	14,426	$	10,252	$	8,747	$	7,707	$	4,857	$	8,321

The following summarizes our other commercial commitments as of December 31, 2011 (in thousands):

	Total		2012		2013		2014		2015		2016		Beyond
Guarantees	$	4,781	$	4,781	$	-	$	-	$	-	$	-	$	-
Purchase obligations		13,693		13,693		-		-		-		-		-
Total commercial commitments	$	18,474	$	18,474	$	-	$	-	$	-	$	-	$	-

We have commitments under non-cancelable operating leases primarily for office facilities throughout the world. Certain leases require us to pay property taxes, insurance and routine maintenance, and include escalation clauses. As of December 31, 2011, we had non-cancelable operating lease obligations of approximately $54 million compared to $56 million at December 31, 2010. Rent expense under operating leases was $16 million, $14 million and $12 million for the years ended December 31, 2011, 2010 and 2009, respectively.

Purchase obligations primarily represent purchase commitments for customized inventory and inventory components. As of December 31, 2011, we had non-cancelable purchase commitments with various suppliers of customized inventory and inventory components totaling approximately $14 million over the next twelve months. At December 31, 2010, we had non-cancelable purchase commitments with various suppliers of customized inventory and inventory components totaling approximately $8 million.

At December 31, 2011, we had outstanding guarantees for payment of customs and foreign grants totaling approximately $4.8 million. At December 31, 2010, we had outstanding guarantees for payment of customs, foreign grants and potential customer disputes totaling approximately $5 million.

Off-Balance Sheet Arrangements.We do not have any debt or off-balance sheet debt. As of December 31, 2011, we did not have any relationships with any unconsolidated entities or financial partnerships, such as entities often referred to as structured finance entities, which would have been established for the purpose of facilitating off-balance sheet arrangements. As such, we are not exposed to any financing, liquidity, market or credit risk that could arise if we were engaged in such relationships.

Prospective Capital Needs.  We believe that our existing cash, cash equivalents and short-term investments, together with cash generated from operations as well as from the exercise of employee stock options and the purchase of common stock through our employee stock purchase plan, will be sufficient to cover our working capital needs, capital expenditures, investment requirements, commitments, payment of dividends to our stockholders and repurchases of our common stock for at least the next 12 months. We also believe these sources of cash will be sufficient to fund the construction of our manufacturing, logistics and research and development facility in Penang, Malaysia, which construction began in the third quarter of 2011 and is scheduled to continue through the third quarter of 2012. However, we may choose or be required to raise additional funds by selling equity or debt securities to the public or to selected investors, or by borrowing money from financial institutions. Historically, we have not had to rely on debt, public or private, to fund our operating, financing or investing activities. We could also choose or be required to reduce certain expenditures, such as payments of dividends or repurchases of our common stock. In addition, even though we may not need additional funds, we may still elect to sell additional equity or debt securities or obtain credit facilities for other reasons. If we elect to raise additional funds, we may not be able to obtain such funds on a timely basis on acceptable terms, if at all. If we raise additional funds by issuing additional equity or convertible debt securities, the ownership percentages of our existing stockholders would be reduced. In addition, the equity or debt securities that we issue may have rights, preferences or privileges senior to those of our common stock.

Although we believe that we have sufficient capital to fund our activities for at least the next 12 months, our future capital requirements may vary materially from those now planned. We anticipate that the amount of capital we will need in the future will depend on many factors, including:

·   costs associated with the planned expansion of our manufacturing facilities in Malaysia;

·   difficulties and the high tax costs associated with the repatriation of earnings;

·   payment of dividends to our stockholders;

·   general economic and political conditions and specific conditions in the markets we address, including any volatility in the industrial economy in the various geographic regions in which we do business;

·   the inability of certain of our customers who depend on credit to have access to their traditional sources of credit to finance the purchase of products from us, which may lead them to reduce their level of purchases or to seek credit or other accommodations from us;

·   the timing, cost or outcome of any future intellectual property or commercial disputes including under our previous GSA contract;

·   required levels of research and development and other operating costs;

·   capital improvements for new and existing facilities;

·   the overall levels of sales of our products and gross profit margins;

·   acquisitions of other businesses, assets, products or technologies;

·   our business, product, capital expenditure and research and development plans, and product and technology roadmaps;

·   the levels of inventory and accounts receivable that we maintain;

·   repurchases of our common stock;

·   our relationships with suppliers and customers; and,

·   the level of exercises of stock options and stock purchases under our employee stock purchase plan.

Recently Issued Accounting Pronouncements

Note 1 – Operations and Summary of Significant Accounting Policies for discussion regarding recently issued accounting pronouncements.

Critical Accounting Policies

The preparation of our financial statements in conformity with generally accepted accounting principles requires us to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues, expenses and related disclosures of contingent assets and liabilities. We base our estimates on past experience and other assumptions that we believe are reasonable under the circumstances, and we evaluate these estimates on an ongoing basis. Our critical accounting policies are those that affect our financial statements materially and involve difficult, subjective or complex judgments by management. Although these estimates are based on management's best knowledge of current events and actions that may impact the company in the future, actual results may be materially different from the estimates.

Our critical accounting policies are as follows:

·   Revenue recognition

We derive revenue primarily from the sale/licensing of integrated hardware and software solutions. Independent sales of application software licenses include post contract support services. In addition, training services are sold separately and revenue is recognized as the services are performed. The products and services are generally sold under standardized licensing and sales arrangements with payment terms ranging from net 30 days in the U.S. to net 30 days and up to net 90 days in some international markets. Approximately 86% of our product/license sales include both hardware and software in the customer arrangement, with a small percentage of sales including other services. We offer rights of return and standard warranties for product defects related to our products. The rights of return are generally for a period of up to 30 days after the delivery date. The standard and available extended warranties cover periods ranging from 90 days to three years. We do not generally enter into contracts requiring product acceptance from the customer.

Revenue is recognized in accordance with the provisions of FASB ASC 985, when persuasive evidence of an arrangement exists, delivery has occurred, the fee is fixed or determinable, and collectability is probable. We enter into certain arrangements where we are obligated to deliver multiple products and/or services (“multiple elements”). In these transactions, we allocate the total revenue among the elements based on vendor specific objective evidence (“VSOE”) of fair value as determined by the sales price of each element when sold separately.

When VSOE of fair value is not available for a delivered element but is available for the undelivered element of a multiple element arrangement, sales revenue is generally recognized on the date the product is shipped, using the residual method under FASB ASC 985, with a portion of revenue recorded as deferred (unearned) due to applicable undelivered elements. Undelivered elements for our multiple element arrangements with a customer are generally restricted to post contract support and training and education. The amount of revenue allocated to these undelivered elements is based on the VSOE of fair value for those undelivered elements. Deferred revenue due to undelivered elements is recognized ratably over the service period or when the service is completed. When VSOE of fair value is not available for the undelivered element of a multiple element arrangement, sales revenue for the entire sales contract value is generally recognized ratably over the service period of the undelivered element, generally 12 months or when the service is completed in accordance with the subscription method. Deferred revenue at December 31, 2011 and 2010 was $90 million and $72 million, respectively.

The application of FASB ASC 985, requires judgment, including whether a software arrangement includes multiple elements, and if so, whether VSOE of fair value exists for those elements. Changes to the elements in a software arrangement, the ability to identify VSOE for those elements, the fair value of the respective elements, and changes to a product’s estimated life cycle could materially impact the amount of our earned and unearned revenue. Judgment is also required to assess whether future releases of certain software represent new products or upgrades and enhancements to existing products.

On January 1, 2011, we prospectively adopted accounting rules that changed the criteria for separating consideration in multiple-deliverable arrangements. The new rules changed the application of the residual method of allocation and require that arrangement consideration be allocated at the inception of an arrangement to all deliverables using the relative selling price method. The relative selling price method allocates any discount in the arrangement proportionally to each deliverable on the basis of each deliverable’s selling price. The selling price used for each deliverable will be based on VSOE if available, third–party evidence if vendor-specific objective evidence is not available, or estimated selling price if neither vendor-specific objective evidence nor third-party evidence is available. The adoption of the amended revenue recognition rules did not change the units of accounting for our revenue transactions. It also did not significantly change how we allocated the arrangement consideration to the various units of accounting or the timing of revenue. The impact of our adoption was not material to our consolidated financial statements for the year ended December 31, 2011.

·   Estimating allowances for sales returns

The preparation of financial statements requires that we make estimates and assumptions of potential future product returns related to current period product revenue. We analyze historical returns, current economic trends, and changes in customer demand and acceptance of our products when evaluating the adequacy of our sales returns allowance. Significant judgments and estimates must be made and used in connection with establishing the sales returns allowance in any accounting period. A provision for estimated sales returns is made by reducing recorded revenue by the amount of the allowance. Accounts receivable is reported net of the allowance for sales returns. The allowance for sales returns was $1.6 million and $1.7 million at December 31, 2011 and 2010, respectively. Material differences may result in the amount and timing of our revenue for any period if we made different judgments or utilized different estimates or if actual results varied materially from our estimates.

·   Estimating allowances, specifically the allowance for doubtful accounts and the adjustment for excess and obsolete inventories

In addition to estimating an allowance for sales returns, we must also make estimates about the uncollectability of our accounts receivables. We specifically analyze accounts receivable and analyze historical bad debts, customer concentrations, customer credit-worthiness and current economic trends when evaluating the adequacy of our allowance for doubtful accounts. Our allowance for doubtful accounts was $2.6 million and $2.1 million at December 31, 2011 and 2010, respectively. We also write down our inventory for estimated obsolescence or unmarketable inventory equal to the difference between the cost of inventory and estimated market value based on assumptions of future demand and market conditions. Our allowance for excess and obsolete inventories was $4.2 million and $3.3 million at December 31, 2011 and 2010, respectively. Significant judgments and estimates must be made and used in connection with establishing these allowances. Material differences may result in the amount and timing of our bad debt and inventory obsolescence if we made different judgments or utilized different estimates or if actual results varied materially from our estimates.

·   Accounting for costs of computer software

We capitalize costs related to the development and acquisition of certain software products. Capitalization of costs begins when technological feasibility has been established and ends when the product is available for general release to customers. Technological feasibility for our products is established when the product is available for beta release. Judgment is required in determining when technological feasibility of a product is established. Amortization is computed on an individual product basis for those products available for market and has been recognized based on the product’s estimated economic life, generally three years. At each balance sheet date, the unamortized costs are reviewed by management and reduced to net realized value when necessary. As of December 31, 2011 and 2010 unamortized capitalized software development costs were $23 million and $24 million, respectively.

·   Valuation of long-lived and intangible assets

We assess the impairment of identifiable intangibles, long-lived assets and related goodwill whenever events or changes in circumstances indicate that the carrying value may not be recoverable. In accordance with FASB ASC 350, Intangibles – Goodwill and Other (FASB ASC 350), goodwill is tested for impairment on an annual basis, and between annual tests if indicators of potential impairment exist, using a fair-value-based approach based on the market capitalization of the reporting unit. Our annual impairment test was performed as of February 28, 2011. No impairment of goodwill and long-lived and intangible assets was identified during 2011 and 2010. Goodwill is deductible for tax purposes in certain jurisdictions. We have defined our operating segment based on geographic regions. We sell our products in three geographic regions. Our sales to these regions share similar economic characteristics, similar product mix, similar customers, and similar distribution methods. Accordingly, we have elected to aggregate these three geographic regions into a single operating segment. As we have one reporting segment, we allocate goodwill to one reporting unit for goodwill impairment testing. Factors considered important which could trigger an impairment review include the following:

·   significant underperformance relative to expected historical or projected future operating results;

·   significant changes in the manner of our use of the acquired assets or the strategy for our overall business;

·   significant negative industry or economic trends; and,

·   our market capitalization relative to net book value.

When it is determined that the carrying value of intangibles, long-lived assets and related goodwill may not be recoverable based upon the existence of one or more of the above indicators of impairment, the measurement of any impairment is determined and the carrying value is reduced as appropriate. As of December 31, 2011 and 2010, we had goodwill of approximately $131 million and $70 million, respectively.

·   Accounting for income taxes

We account for income taxes under the asset and liability method. Deferred tax assets and liabilities are recognized for the expected tax consequences of temporary differences between the tax basis of assets and liabilities and their reported amounts. Valuation allowances are established when necessary to reduce deferred tax assets to amounts which are more likely than not to be realized. Judgment is required in assessing the future tax consequences of events that have been recognized in our financial statements or tax returns. Variations in the actual outcome of these future tax consequences could materially impact our financial position or our results of operations. In estimating future tax consequences, all expected future events are considered other than enactments of changes in tax laws or rates. We account for uncertainty in income taxes recognized in our financial statements using prescribed recognition thresholds and measurement attributes for financial statement disclosure of tax positions taken or expected to be taken on our tax returns. Our continuing policy is to recognize interest and penalties related to income tax matters in income tax expense.

The tax position of our Hungarian operations continue to benefit from assets created by the restructuring of our operations in Hungary in 2003. In addition, our research and development activities in Hungary continue to benefit from a tax law in Hungary that provides for an enhanced deduction for qualified research and development expenses. Partial release of the valuation allowance on assets from the restructuring and the enhanced tax deduction for research expenses resulted in income tax benefits of $19 million and $17 million for the years ended December 31, 2011 and 2010, respectively.

Our earnings in Hungary are subject to a statutory tax rate of 19%. The difference between this rate and the statutory U.S. rate of 35% resulted in income tax benefits of $16 million and $13 million for the years ended December 31, 2011 and 2010, respectively. No countries other than Hungary had a significant impact on our effective tax rate. We have not entered into any advanced pricing or other agreements with the Internal Revenue Service with regard to any foreign jurisdictions.

For additional discussion about our income taxes including components of income before income taxes, our provision for income taxes charged to operations, components of our deferred tax assets and liabilities, a reconciliation of income taxes at the U.S. federal statutory rate of 35% to our effective tax rate and other tax matters, see Note 9 – Income taxes of Notes to Consolidated Financial Statements.

·   Loss contingencies

We accrue for probable losses from contingencies including legal defense costs, on an undiscounted basis, when such costs are considered probable of being incurred and are reasonably estimable. We periodically evaluate available information, both internal and external, relative to such contingencies and adjust this accrual as necessary. Disclosure of a contingency is required if there is at least a reasonable possibility that a loss has been incurred. In determining whether a loss should be accrued we evaluate, among other factors, the degree of probability of an unfavorable outcome and our ability to make a reasonable estimate of the amount of loss. Changes in these factors could materially impact our financial position or our results of operation.

ITEM 7A.                      QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Financial Risk Management

Our international sales are subject to inherent risks, including fluctuations in local economies; fluctuations in foreign currencies relative to the U.S. dollar; difficulties in staffing and managing foreign operations; greater difficulty in accounts receivable collection; costs and risks of localizing products for foreign countries; unexpected changes in regulatory requirements, tariffs and other trade barriers; difficulties in the repatriation of earnings and burdens of complying with a wide variety of foreign laws.

The vast majority of our sales outside of North America are denominated in local currencies, and accordingly, the U.S. dollar equivalent of these sales is affected by changes in the foreign currency exchange rates. The change in exchange rates had the effect of increasing our consolidated sales by $27 million or 3% in 2011, and increasing our consolidated sales by $13 million or 2% in 2010. Since most of our international operating expenses are also incurred in local currencies, the change in exchange rates had the effect of increasing our consolidated operating expenses by $19 million or 3% in 2011, and increasing our consolidated operating expenses by $9 million or 3% in 2010.

During the first half of 2011, the U.S. dollar generally declined against most of the major currencies in the markets in which we do business. During the six month period ended December 31, 2011, we saw the U.S. dollar turn significantly stronger against most of the major currencies in the markets in which we do business. We cannot predict to what degree or how long this recent volatility in the foreign currency exchange markets will continue.  In the past, we have noted that significant volatility in foreign currency exchange rates in the markets in which we do business has had a significant impact on the revaluation of our foreign currency denominated firm commitments, on our ability to forecast our U.S. dollar equivalent revenues and expenses and on the effectiveness of our hedging programs. In the past, these dynamics have also adversely affected our revenue growth in international markets and may pose similar challenges in the future. We recognize the local currency as the functional currency in virtually all of our international subsidiaries.

If the local currencies in which we sell our products strengthen against the U.S. dollar, we may need to lower our prices in the local currency to remain competitive in our international markets which could have a material adverse effect on our gross and net profit margins. If the local currencies in which we sell our products weaken against the U.S. dollar and if the local sales prices cannot be raised due to competitive pressures, we will experience a deterioration of our gross and net profit margins. To help protect against the change in the value caused by a fluctuation in foreign currency exchange rates of forecasted foreign currency cash flows resulting from international sales and expenses over the next one to two years, we have a foreign currency cash flow hedging program. We hedge portions of our forecasted revenue, cost of sales and operating expenses denominated in foreign currencies with foreign currency forward contracts. For forward contracts, when the dollar strengthens significantly against the foreign currencies, the change in the present value of future foreign currency cash flows may be offset by the change in the fair value of the forward contracts designated as hedges. For purchased option contracts, when the dollar strengthens significantly against the foreign currencies, the change in the present value of future foreign currency cash flows may be offset by the change in the fair value of the option contracts designated as hedges, net of the premium paid. Our foreign currency purchased option contracts are purchased “at-the-money” or “out-of-the-money.” We purchase foreign currency forward and option contracts for up to 100% of our forecasted exposures in selected currencies (primarily in Euro, Japanese yen, British pound sterling, Korean won and Hungarian forint) and limit the duration of these contracts to 40 months or less. As a result, our hedging activities only partially address our risks from foreign currency transactions, and there can be no assurance that this strategy will be successful. We do not invest in contracts for speculative purposes.

During 2011, our hedges had the effect of decreasing our consolidated sales by $3.9 million, decreasing our cost of sales by $1.4 million, and decreasing our operating expenses by $556,000. During 2010, these hedges had the effect of increasing our consolidated sales by $5.9 million, decreasing our cost of sales by $2.5 million, and decreasing our operating expenses by $1.2 million.  (See Note 4 - Derivative instruments and hedging activities of Notes to Consolidated Financial Statements for further discussion regarding our cash flow hedging program and its related impacted on our consolidated sales, cost of sales and operating expenses for the years ended December 31, 2011 and 2010).

Inventory Management

The marketplace for our products dictates that many of our products be shipped very quickly after an order is received. As a result, we are required to maintain significant inventories. Therefore, inventory obsolescence is a risk for us due to frequent engineering changes, shifting customer demand, the emergence of new industry standards and rapid technological advances including the introduction by us or our competitors of products embodying new technology. However our risk of obsolescence is mitigated as many of our products have interchangeable parts and many have long lives. While we adjust for excess and obsolete inventories and we monitor the valuation of our inventories, there can be no assurance that our valuation adjustments will be sufficient.

Market Risk

We are exposed to a variety of risks, including foreign currency fluctuations and changes in the market value of our investments. In the normal course of business, we employ established policies and procedures to manage our exposure to fluctuations in foreign currency values and changes in the market value of our investments.

Cash, Cash Equivalents and Short-Term Investments

At December 31, 2011, we had $366 million in cash, cash equivalents and short-term investments. We maintain cash and cash equivalents with various financial institutions located in many countries throughout the world. Approximately $37 million or 26% of these amounts were held in domestic accounts with various financial institutions and $106 million or 74% was held in accounts outside of the U.S. with various financial institutions. At December 31, 2011, $106 million or 75% of our cash and cash equivalents was held in cash in various operating accounts throughout the world, and $23 million or 16% was held in money market accounts and $14 million or 9% was held in U.S. Treasuries. The most significant of our operating accounts was our domestic operating account which held approximately $8 million or 6% of our total cash and cash equivalents at a bank that carried A+/A2/AA- ratings at December 31, 2011. Our short-term investment balance is comprised of $30 million or 13% held in our investment accounts in the U.S. and $194 million or 87% held in investment accounts of our foreign subsidiaries. We have $32 million U.S. dollar equivalent of German government sovereign debt that is denominated in Euro. Our German government sovereign debt holdings have a maximum maturity of 18 months and carry Aaa/AAA ratings.

We value our available-for-sale short term investments based on pricing from third party pricing vendors, who may use quoted prices in active markets for identical assets (Level 1 inputs) or inputs other than quoted prices that are observable either directly or indirectly (Level 2 inputs) in determining fair value. We classify all of our fixed income available-for-sale securities as having Level 2 inputs. The valuation techniques used to measure the fair value of our financial instruments having Level 2 inputs were derived from non-binding market consensus prices that are corroborated by observable market data, quoted market prices for similar instruments, or pricing models, such as discounted cash flow techniques. We believe all of these sources reflect the credit risk associated with each of our available for sale short term investments.

The goal of our investment policy is to manage our investment portfolio to preserve principal and liquidity while maximizing the return on our investment portfolio through the full investment of available funds. We place our cash investments in instruments that meet credit quality standards, as specified in our corporate investment policy guidelines. These guidelines also limit the amount of credit exposure to any one issue, issuer or type of instrument. Our cash equivalents and short-term investments carried ratings from the major credit rating agencies that were in accordance with our corporate investment policy. Our investment policy allows investments in the following: government and federal agency obligations, repurchase agreements (“Repos”), certificates of deposit and time deposits, corporate obligations, medium term notes and deposit notes, commercial paper including asset-backed commercial paper (“ABCP”), puttable bonds, general obligation and revenue bonds, money market funds, taxable commercial paper, corporate notes/bonds, municipal notes, municipal obligations, variable rate demand notes and tax exempt commercial paper. All such instruments must carry minimum ratings of A1/P1/F1, MIG1/VMIG1/SP1 and A2/A/A, as applicable, all of which are considered “investment grade”. Our investment policy for marketable securities requires that all securities mature in three years or less, with a weighted average maturity of no longer than 18 months with at least 10% maturing in 90 days or less.

We account for our investments in debt and equity instruments under FASB ASC 320 Investments – Debt and Equity Securities (FASB ASC 320). Our investments are classified as available-for-sale and accordingly are reported at fair value, with unrealized gains and losses reported as other comprehensive income, a component of shareholders’ equity. Unrealized losses are charged against income when a decline in fair value is determined to be other than temporary. Investments with maturities beyond one year are classified as short-term based on their highly liquid nature and because such marketable securities represent the investment of cash that is available for current operations. The fair value of our short-term investments at December 31, 2011 and December 31, 2010 was $224 million and $131 million, respectively. The increase was due to the net purchase of $91 million of short-term investments which was done to continue the diversification our holdings from money market accounts to debt securities and to take advantage of higher yields associated with longer maturity debt securities.

We follow the guidance provided by FASB ASC 320 to assess whether our investments with unrealized loss positions are other than temporarily impaired. Realized gains and losses and declines in value judged to be other than temporary are determined based on the specific identification method and are reported in other income (expense), net, in our Consolidated Statements of Income. There were not any other than temporary impairments recognized in other expense during 2011 and 2010.

Interest Rate Risk

Investments in both fixed rate and floating rate instruments carry a degree of interest rate risk. Fixed rate securities may have their market value adversely impacted due to an increase in interest rates, while floating rate securities may produce less income than expected if interest rates fall. Due to these factors, our future investment income may fall short of expectations due to changes in interest rates or if the decline in the fair value of our publicly traded debt investments is judged to be other-than-temporary. We may suffer losses in principal if we are forced to sell securities that have declined in market value due to changes in interest rates. However, because any debt securities we hold are classified as available-for-sale, no gains or losses are realized in our income statement due to changes in interest rates unless such securities are sold prior to maturity or unless declines in value are determined to be other-than-temporary. These securities are reported at fair value with the related unrealized gains and losses included in accumulated other comprehensive income (loss), a component of stockholders’ equity, net of tax.

In a declining interest rate environment, as short-term investments mature, reinvestment occurs at less favorable market rates. Given the short-term nature of certain investments, the current interest rate environment of low rates has negatively impacted our investment income.

In order to assess the interest rate risk associated with our investment portfolio, we performed a sensitivity analysis to determine the impact a change in interest rates would have on the value of our investment portfolio assuming a 100 basis point parallel shift in the yield curve. Based on our investment positions as of December 31, 2011, a 100 basis point increase or decrease in interest rates across all maturities would result in a $1.9 million increase or decrease in the fair market value of our portfolio. As of December 31, 2010, a similar 100 basis point shift in the yield curve would have resulted in a $1.0 million increase or decrease in the fair market value of our portfolio. Such losses would only be realized if we sold the investments prior to maturity or if there is a other than temporary impairment.

Actual future gains and losses associated with our investments may differ from the sensitivity analyses performed as of December 31, 2011, due to the inherent limitations associated with predicting the changes in the timing and level of interest rates and our actual exposures and positions.

We continue to monitor the stability of the financial markets, particularly those in the European region and have taken steps to limit our direct and indirect exposure to these markets; however, we can give no assurance that we will not be negatively impacted by any adverse outcomes in those markets. We also continue to weigh the benefit of the higher yields associated with longer maturities against the interest rate risk and credit rating risk, also associated with these longer maturities when making these decisions. We cannot predict when or if interest rates and investment yields will rise. If yields continue to stay at these low levels, our investment income will continue to be negatively impacted.

Exchange Rate Risk

Our objective in managing our exposure to foreign currency exchange rate fluctuations is to reduce the impact of adverse fluctuations in such exchange rates on our earnings and cash flow. Accordingly, we utilize purchased foreign currency option and forward contracts to hedge our exposure on anticipated transactions and firm commitments. The principal currencies hedged are the Euro, British pound, Japanese yen, Korean won and Hungarian forint. We monitor our foreign exchange exposures regularly to help ensure the overall effectiveness of our foreign currency hedge positions. There can be no assurance that our foreign currency hedging activities will substantially offset the impact of fluctuations in currency exchanges rates on our results of operations and financial position. Based on the foreign exchange instruments outstanding at December 31, 2011 and December 31, 2010, an adverse change (defined as 20% in the Asian currencies and 10% in all other currencies) in exchange rates would result in a decline in the aggregate settlement value of all of our instruments outstanding of approximately $­23 million and $10 million, respectively. However, as we utilize foreign currency instruments for hedging anticipated and firmly committed transactions, we believe that a loss in settlement value for those instruments will be substantially offset by increases in the value of the underlying exposure. (See Note 4 - Derivative instruments and hedging activities of Notes to Consolidated Financial Statements for a further description of our derivative instruments and hedging activities).

ITEM 8.                 FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

The information required by this item is incorporated by reference to the Consolidated Financial Statements set forth on pages F-1 through F-31 hereof. Also see “Quarterly results of operations” on page 26.

ITEM 9.                 CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING ANDFINANCIAL DISCLOSURE

There were no disagreements with accountants on accounting and financial disclosure for the year ended December 31, 2011.

ITEM 9A.              CONTROLS AND PROCEDURES

Evaluation of Disclosure Controls and Procedures

As of the end of the period covered by this Annual Report on Form 10-K, our Chief Executive Officer, Dr. James Truchard, and our Executive Vice President, Chief Operating Officer and Chief Financial Officer, Alex Davern, based on their evaluation of our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) of the Securities Exchange Act of 1934, as amended), required by paragraph (b) of Rule 13a – 15 or Rule 15d – 15, have concluded that our disclosure controls and procedures were effective at the reasonable assurance level, to ensure the timely collection, evaluation and disclosure of information relating to us that would potentially be subject to disclosure under the Securities Exchange Act of 1934, as amended, and the rules and regulations promulgated thereunder, and that such information is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms. These disclosure controls and procedures include, without limitation, controls and procedures designed to ensure that information required to be disclosed by us in the reports we file or submit is accumulated and communicated to management, including our Chief Executive Officer and Chief Financial Officer, as appropriate to allow timely decisions regarding required disclosure. Our disclosure controls and procedures include components of our internal control over financial reporting. Our assessment of the effectiveness of our internal control over financial reporting is expressed at the level of reasonable assurance because a control system, no matter how well designed and operated, can provide only reasonable, but not absolute assurance that the control system’s objectives will be met.

Management Report on Internal Control over Financial Reporting

Our management is responsible for establishing and maintaining adequate internal control over financial reporting to provide reasonable assurance regarding the reliability of our financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. Internal control over financial reporting includes those policies and procedures that (i) pertain to the maintenance of records that in reasonable detail accurately and fairly reflect the transactions and dispositions of the assets of the company, (ii) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that our receipts and expenditures are being made only in accordance with authorizations of our management and directors; and (iii) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of our assets that could have a material effect on our financial statements. We continue to enhance our internal control over financial reporting in key functional areas with the goal of monitoring our operations at the level of documentation, segregation of duties, and systems security necessary, as well as transactional control procedures required under Auditing Standard No. 5 issued by the Public Company Accounting Oversight Board. We discuss and disclose these matters to the audit committee of our board of directors and to our auditors.

Management assessed the effectiveness of our internal control over financial reporting as of December 31, 2011, which was the end of our fiscal year. Management based its assessment on criteria established in Internal Control – Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission. Management’s assessment included evaluation of such elements as the design and operating effectiveness of key financial reporting controls, process documentation, accounting policies, and our overall control environment. This assessment is supported by testing and monitoring performed by our finance organization and our internal audit department.

Based on this assessment, management has concluded that our internal control over financial reporting was effective as of the end of the fiscal year to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external reporting purposes in accordance with generally accepted accounting principles. We reviewed the results of management’s assessment with the Audit Committee of our Board of Directors.

Our independent registered public accounting firm, Ernst & Young LLP, audited our consolidated financial statements, and independently assessed the effectiveness of our internal control over financial reporting. Ernst & Young LLP has issued their report, which is included in Part II, Item 8 of this Form 10-K.

Changes in Internal Control over Financial Reporting

During the three months ended December 31, 2011, there was no change in our internal control over financial reporting identified in connection with the evaluation required by paragraph (d) of Rule 13a-15 or Rule 15d-15 that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

ITEM 9B.                      OTHER INFORMATION

From time to time, our directors, executive officers and other insiders may adopt stock trading plans pursuant to Rule 10b5-1(c) promulgated by the Securities and Exchange Commission under the Securities Exchange Act of 1934, as amended. Jeffrey L. Kodosky and James J. Truchard have made periodic sales of our stock pursuant to such plans. The foregoing is provided for informational purposes and not in response to any particular requirement of Form 10-K.

PART III

Certain information required by Part III is omitted from this Report in that we intend to file a definitive proxy statement pursuant to Regulation 14A with the Securities and Exchange Commission (the “Proxy Statement”) relating to our annual meeting of stockholders not later than 120 days after the end of the fiscal year covered by this Report, and such information is incorporated by reference herein as described below.

ITEM 10.                      DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE

The information concerning our directors required by this Item pursuant to Item 401 of Regulation S-K will appear in our Proxy Statement under the section “Election of Directors” and such information is incorporated herein by reference.

The information concerning our executive officers required by this Item pursuant to Item 401 of Regulation S-K will appear in our Proxy Statement under the section “Executive Officers” and such information is incorporated herein by reference.

The information required by this Item pursuant to Item 405 of Regulation S-K regarding compliance with Section 16(a) of the Securities Exchange Act of 1934, as amended, will appear in our Proxy Statement under the section “Section 16(a) Beneficial Ownership Reporting Compliance” and such information is incorporated herein by reference.

The information concerning our code of ethics that applies to our principal executive officer, our principal financial officer, our controller or person performing similar functions required by this Item pursuant to Item 406 of Regulation S-K will appear in our Proxy Statement under the section “Code of Ethics” and such information is incorporated herein by reference.

The information required by this Item pursuant to Item 407(c)(3) of Regulation S-K regarding material changes, if any, to procedures by which security holders may recommend nominees to our board of directors will appear in our Proxy Statement under the section “Deadline for Receipt of Stockholder Proposals” and such information is incorporated herein by reference.

The information required by this Item pursuant to Item 407(d)(4) and Item 407(d)(5) of Regulation S-K regarding our Audit Committee and our audit committee financial expert(s), respectively, will appear in our Proxy Statement under the heading “Corporate Governance” and such information is incorporated herein by reference.

ITEM 11.                      EXECUTIVE COMPENSATION

The information required by this Item pursuant to Item 402 of Regulation S-K regarding director compensation will appear in our Proxy Statement under the section “Board Compensation” and such information is incorporated herein by reference.

The information required by this Item pursuant to Item 402 of Regulation S-K regarding executive officer compensation, including our Compensation Discussion & Analysis, will appear in our Proxy Statement under the section “Executive Compensation” and such information is incorporated herein by reference.

The information required by this Item pursuant to Item 407(e)(4) of Regulation S-K will appear in our Proxy Statement under the section “Compensation Committee Interlocks and Insider Participation” and such information is incorporated herein by reference.

The information required by this Item pursuant to Item 407(e)(5) will appear in our Proxy Statement under the section “Compensation Committee Report” and such information is incorporated herein by reference.

ITEM 12.                      SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS

The information required by this Item pursuant to Item 403 of Regulation S-K concerning security ownership of certain beneficial owners and management will appear in our Proxy Statement under the section “Security Ownership” and such information is incorporated herein by reference.

The information required by this Item pursuant to Item 201(d) of Regulation S-K concerning securities authorized for issuance under equity compensation plans will appear in our Proxy Statement under the section “Equity Compensation Plans Information” and such information is incorporated herein by reference.

ITEM 13.                      CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS AND DIRECTOR INDEPENDENCE

The information required by this Item pursuant to Item 404 of Regulation S-K will appear in our Proxy Statement under the section “Certain Relationships and Related Transactions” and such information is incorporated herein by reference.

The information required by this Item pursuant to Item 407(a) of Regulation S-K regarding the independence of our directors will appear in our Proxy Statement under the section “Corporate Governance” and such information is incorporated herein by reference.

ITEM 14.                      PRINCIPAL ACCOUNTING FEES AND SERVICES

The information concerning principal accountant fees and services required by this Item is incorporated by reference to our Proxy Statement under the heading “Ratification of Independent Registered Public Accounting Firm.”

The information concerning pre-approval policies for audit and non-audit services required by this Item is incorporated by reference to our Proxy Statement under the heading “Audit Committee Pre-Approval of Audit and Permissible Non-Audit Services of Independent Auditors.”

PART IV

ITEM 15.                      EXHIBITS AND FINANCIAL STATEMENT SCHEDULES

(a) Documents Filed with Report

1.      Financial Statements.

Report of Independent Registered Public Accounting Firm	F-2
Report of Independent Registered Public Accounting Firm on Internal Control over Financial Reporting	F-3
Consolidated Balance Sheets	F-4
Consolidated Statements of Income	F-5
Consolidated Statements of Cash Flows	F-6
Consolidated Statements of Stockholders’ Equity	F-7
Notes to Consolidated Financial Statements	F-8

2.      Financial Statement Schedules.

All schedules are omitted because the required information is already included in our notes to our consolidated financial statements or because they are not applicable.

3.      Exhibits.

3.1(1)	Certificate of Incorporation, as amended, of the Company.
3.2(2)	Amended and Restated Bylaws of the Company.
3.3(3)	Certificate of Designation of Rights, Preferences and Privileges of Series A Participating Preferred Stock of the Company.
4.1(4)	Specimen of Common Stock certificate of the Company.
4.2(5)	Rights Agreement dated as of January 21, 2004, between the Company and EquiServe Trust Company, N.A.
10.1(4)	Form of Indemnification Agreement.
10.2(6)	1994 Incentive Plan, as amended.*
10.3(7)	1994 Employee Stock Purchase Plan, as amended.*
10.5(8)	National Instruments Corporation Annual Incentive Program, as amended.*
10.6(9)	2005 Incentive Plan.*
10.7(10)	2005 Form of Restricted Stock Unit Award Agreement (Non-Employee Director).*
10.8(10)	2005 Form of Restricted Stock Unit Award Agreement (Performance Vesting).*
10.9(10)	2005 Form of Restricted Stock Unit Award Agreement (Current Employee).*
10.10(10)	2005 Form of Restricted Stock Unit Award Agreement (Newly Hired Employee).*
10.11(11)	2010 Incentive Plan.*
10.12(12)	2010 Form of Restricted Stock Unit Award Agreement (Non-Employee Director).*
10.13(13)	2010 Form of Restricted Stock Unit Award Agreement (Performance Vesting).*
10.14(14)	2010 Form of Restricted Stock Unit Award Agreement (Current Employee).*
10.15(15)	2010 Form of Restricted Stock Unit Award Agreement (Newly Hired Employee).*
31.1	Certification of Chief Executive Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
31.2	Certification of Chief Financial Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
32.1	Certification of Chief Executive Officer and Chief Financial Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
101.INS	XBRL Instance Document **
101.SCH	XBRL Taxonomy Extension Schema Document **
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document **
101.DEF	XBRL Taxonomy Extension Definition Linkbase Document **
101.LAB	XBRL Taxonomy Extension Label Linkbase Document **
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document **
(1)	Incorporated by reference to the same-numbered exhibit filed with the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2003.
(2)	Incorporated by reference to the same-numbered exhibit filed with the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2007.
(3)	Incorporated by reference to the same-numbered exhibit filed with the Company’s Registration Statement on Form 8-A on April 27, 2004.
(4)	Incorporated by reference to the Company’s Registration Statement on Form S-1 (Reg. No. 33-88386) declared effective March 13, 1995.
(5)	Incorporated by reference to exhibit 4.1 filed with the Company’s Current Report on Form 8-K filed on January 28, 2004.
(6)	Incorporated by reference to the same-numbered exhibit filed with the Company’s Form 10-Q on August 5, 2004.
(7)	Incorporated by reference to exhibit 10.1 filed with the Company’s Current Report on Form 8-K filed on May 16, 2011.
(8)	Incorporated by reference to exhibit 99.1 filed with the Company’s Current Report on Form 8-K filed on October 22, 2010.
(9)	Incorporated by reference to exhibit A of the Company’s Proxy Statement dated and filed on April 4, 2005.
(10)	Incorporated by reference to the same-numbered exhibit filed with the Company’s Form 10-Q on August 2, 2006.
(11)	Incorporated by reference to exhibit 10.1 filed with the Company’s Current Report on Form 8-K filed on May 17, 2010.
(12)	Incorporated by reference to exhibit 10.2 filed with the Company’s Current Report on Form 8-K filed on June 24, 2010.
(13)	Incorporated by reference to exhibit 10.3 filed with the Company’s Current Report on Form 8-K filed on June 24, 2010.
(14)	Incorporated by reference to exhibit 10.4 filed with the Company’s Current Report on Form 8-K filed on June 24, 2010.
(15)	Incorporated by reference to exhibit 10.5 filed with the Company’s Current Report on Form 8-K filed on June 24, 2010.
*	Management Contract or Compensatory Plan or Arrangement
**	In accordance with Rule 406T of Regulation S-T, these interactive data files are deemed not filed or part of a registration statement or prospectus for purposes of Sections 11 or 12 of the Securities Act of 1933 or Section 18 of the Securities Exchange Act of 1934 and otherwise are not subject to liability.

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

	Registrant
	NATIONAL INSTRUMENTS CORPORATION
February 6, 2012	By:	/s/ Dr. James J. Truchard
		Dr. James J. Truchard
		Chairman of the Board and President

POWER OF ATTORNEY

KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Dr. James J. Truchard and Alexander M. Davern, jointly and severally, his or her attorneys-in-fact, each with the power of substitution, for him or her in any and all capacities, to sign any amendments to this Report on Form 10-K, and to file the same, with exhibits thereto and other documents in connection therewith, with the Securities and Exchange Commission, hereby ratifying and confirming all that each of said attorneys-in-fact, or his substitute or substitutes, may do or cause to be done by virtue hereof.

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

Signature	Capacity in Which Signed	Date
/s/ Dr. James J. Truchard	Chairman of the Board and President (Principal Executive Officer)	February 6, 2012
Dr. James J. Truchard
/s/ Alex M. Davern	EVP, Chief Operating Officer, Chief Financial Officer and Treasurer (Principal Financial and Accounting Officer)	February 6, 2012
Alex M. Davern
/s/ Jeffrey L. Kodosky	Director	February 6, 2012
Jeffrey L. Kodosky
/s/ Dr. Donald M. Carlton	Director	February 6, 2012
Dr. Donald M. Carlton
/s/ Charles J. Roesslein	Director	February 6, 2012
Charles J. Roesslein
/s/ Duy-Loan T. Le	Director	February 6, 2012
Duy-Loan T. Le
/s/ John K. Medica	Director	February 6, 2012
John K. Medica
/s/ John M. Berra	Director	February 6, 2012
John M. Berra

NATIONAL INSTRUMENTS CORPORATION

INDEX TO FINANCIAL STATEMENTS

	Page No.
Financial Statements:
Report of Independent Registered Public Accounting Firm	F-2
Report of Independent Registered Public Accounting Firm on Internal Control over Financial Reporting	F-3
Consolidated Balance Sheets as of December 31, 2011 and 2010	F-4
Consolidated Statements of Income for each of the Three Years in the period Ended December 31, 2011	F-5
Consolidated Statements of Cash Flows for each of the Three Years in the period Ended December 31, 2011	F-6
Consolidated Statements of Stockholders’ Equity for each of the Three Years in the period Ended December 31, 2011	F-7
Notes to Consolidated Financial Statements	F-8

All schedules are omitted because the required information is already included in our notes to our consolidated financial statements or because they are not applicable.

Report of Independent Registered Public Accounting Firm

The Board of Directors and Shareholders of National Instruments Corporation:

We have audited the accompanying consolidated balance sheets of National Instruments Corporation as of December 31, 2011 and 2010, and the related consolidated statements of income, stockholders' equity, and cash flows for each of the three years in the period ended December 31, 2011.  These financial statements are the responsibility of the Company's management.  Our responsibility is to express an opinion on these financial statements based on our audits.

We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.

In our opinion, the financial statements referred to above present fairly, in all material respects, the consolidated financial position of National Instruments Corporation at December 31, 2011 and 2010, and the consolidated results of its operations and its cash flows for each of the three years in the period ended December 31, 2011, in conformity with U.S. generally accepted accounting principles.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), National Instruments Corporation’s internal control over financial reporting as of December 31, 2011, based on criteria established in Internal Control-Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission and our report dated February 6, 2012 expressed an unqualified opinion thereon.

/s/ Ernst & Young LLP

Austin, Texas

February 6, 2012

Report of Independent Registered Public Accounting Firm on Internal Control over Financial Reporting

The Board of Directors and Shareholders of National Instruments Corporation:

We have audited National Instruments Corporation’s internal control over financial reporting as of December 31, 2011, based on criteria established in Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (the COSO criteria). National Instruments Corporation’s management is responsible for maintaining effective internal control over financial reporting, and for its assessment of the effectiveness of internal control over financial reporting included in the accompanying Management Report on Internal Control over Financial Reporting. Our responsibility is to express an opinion on the company’s internal control over financial reporting based on our audit.

We conducted our audit in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

In our opinion, National Instruments Corporation maintained, in all material respects, effective internal control over financial reporting as of December 31, 2011, based on the COSO criteria.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the consolidated balance sheets of National Instruments Corporation as of December 31, 2011 and 2010, and the related consolidated statements of income, stockholders’ equity, and cash flows for each of the three years in the period ended December 31, 2011 and our report dated February 6, 2012 expressed an unqualified opinion thereon.

/s/ Ernst & Young LLP

Austin, Texas

February 6, 2012

NATIONAL INSTRUMENTS CORPORATION

CONSOLIDATED BALANCE SHEETS

(in thousands, except share data)

	December 31, 2011			December 31, 2010
Assets
Current assets:
Cash and cash equivalents	$	142,608		$	219,447
Short-term investments		223,504			131,215
Accounts receivable, net		157,056			127,214
Inventories, net		131,995			117,765
Prepaid expenses and other current assets		38,082			36,239
Deferred income taxes, net		26,304			18,838
Total current assets		719,549			650,718
Property and equipment, net		190,148			160,410
Goodwill		130,747			70,278
Intangible assets, net		83,866			52,816
Other long-term assets		29,984			25,460
Total assets	$	1,154,294		$	959,682
Liabilities and stockholders' equity
Current liabilities:
Accounts payable	$	41,111		$	33,544
Accrued compensation		29,616			27,734
Deferred revenue		90,074			71,650
Accrued expenses and other liabilities		37,612			16,538
Other taxes payable		24,507			16,846
Total current liabilities		222,920			166,312
Deferred income taxes		43,186			29,477
Liability for uncertain tax positions		19,494			14,953
Other long-term liabilities		16,683			4,395
Total liabilities		302,283			215,137
Commitments and contingencies
Stockholders' equity:
Preferred stock:  par value $0.01; 5,000,000 shares authorized; none issued and outstanding		-			-
Common stock:  par value $0.01; 180,000,000 shares authorized; 120,677,143 and 117,904,975 shares issued and outstanding, respectively		1,207			1,179
Additional paid-in capital		471,830			407,713
Retained earnings		382,474			336,363
Accumulated other comprehensive (loss)		(3,500	)		(710	)
Total stockholders’ equity		852,011			744,545
Total liabilities and stockholders’ equity	$	1,154,294		$	959,682

The accompanying notes are an integral part of these financial statements.

NATIONAL INSTRUMENTS CORPORATION

CONSOLIDATED STATEMENTS OF INCOME

(in thousands, except per share data)

	For the Years Ended December 31,
	2011			2010			2009
Net sales:
Product	$	955,613		$	807,386		$	623,736
Software maintenance		81,667			65,834			52,858
GSA accrual		(13,107	)		-			-
Total net sales		1,024,173			873,220			676,594
Cost of  sales:
Product		235,839			195,096			164,700
Software maintenance		5,125			4,987			5,184
Total cost of sales		240,964			200,083			169,884
Gross profit		783,209			673,137			506,710
Operating expenses:
Sales and marketing		388,768			319,606			269,267
Research and development		199,071			158,149			132,974
General and administrative		82,658			67,069			57,938
Total operating expenses		670,497			544,824			460,179
Operating income		112,712			128,313			46,531
Other income (expense):
Interest income		1,319			1,391			1,629
Net foreign exchange gain (loss)		(2,755	)		(2,585	)		734
Other income (loss), net		(142	)		993			1,351
Income before income taxes		111,134			128,112			50,245
Provision for income taxes		17,062			18,996			33,160
Net income	$	94,072		$	109,116		$	17,085
Basic earnings per share	$	0.79		$	0.93		$	0.15
Weighted average shares outstanding - basic		119,836			116,973			116,280
Diluted earnings per share	$	0.78		$	0.92		$	0.15
Weighted average shares outstanding – diluted		121,220			118,572			117,039
Dividends declared per share	$	0.40		$	0.35		$	0.32

The accompanying notes are an integral part of these financial statements.

NATIONAL INSTRUMENTS CORPORATION

CONSOLIDATED STATEMENTS OF CASH FLOWS

(in thousands)

	For the Years Ended December 31,
	2011			2010			2009
Cash flow from operating activities:
Net income	$	94,072		$	109,116		$	17,085
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization		49,897			37,872			38,365
Stock-based compensation		23,219			18,795			20,299
Tax expense (benefit) from deferred income taxes		(8,581	)		3,668			17,196
Tax expense (benefit) from stock option plans		(5,151	)		(96	)		1,450
Changes in operating assets and liabilities:
Accounts receivable		(21,957	)		(22,923	)		17,591
Inventories		(11,817	)		(30,930	)		20,843
Prepaid expenses and other assets		(1,350	)		(20,411	)		12,740
Accounts payable		5,573			9,630			(7,374	)
Deferred revenue		16,953			14,408			11,728
Taxes and other liabilities		29,041			25,929			(14,272	)
Net cash provided by operating activities		169,899			145,058			135,651
Cash flow from investing activities:
Capital expenditures		(54,830	)		(28,397	)		(20,847	)
Capitalization of internally developed software		(12,065	)		(15,759	)		(12,583	)
Additions to other intangibles		(5,035	)		(4,151	)		(4,602	)
Acquisitions, net of cash received		(73,558	)		(4,218	)		-
Purchases of short-term investments		(257,449	)		(126,691	)		(93,087	)
Sales and maturities of short-term investments		166,104			82,672			19,204
Net cash (used by) investing activities		(236,833	)		(96,544	)		(111,915	)
Cash flow from financing activities:
Proceeds from issuance of common stock		32,905			51,852			21,672
Repurchase of common stock		-			(41,862	)		(34,585	)
Dividends paid		(47,961	)		(40,618	)		(37,308	)
Tax (expense) benefit from stock option plans		5,151			96			(1,450	)
Net cash (used by) financing activities		(9,905	)		(30,532	)		(51,671	)
Net change in cash and cash equivalents		(76,839	)		17,982			(27,935	)
Cash and cash equivalents at beginning of period		219,447			201,465			229,400
Cash and cash equivalents at end of period	$	142,608		$	219,447		$	201,465
Cash paid for interest and income taxes:
Interest	$	14		$	82		$	23
Income taxes	$	2,393		$	14,807		$	14,608

The accompanying notes are an integral part of these financial statements.

NATIONAL INSTRUMENTS CORPORATION

CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY

(in thousands, except share data)

	Common Stock Shares			Common Stock Amount			Additional Paid-In Capital			Retained Earnings			Accumulated Other Comprehensive Income/(Loss)			Total Stockholders’ Equity
Balance at December 31, 2008		115,789,594		$	1,158		$	299,966		$	352,831		$	10,483		$	664,438
Net income											17,085						17,085
Foreign currency translation adjustment (net of $1,799 tax expense)														927			927
Unrealized gain on securities available-for-sale (net of $1,093 tax expense)														563			563
Unrealized gain on derivative instruments (net of $3,053 tax expense)														1,572			1,572
Total comprehensive income																	20,147
Issuance of common stock under employee plans, including tax benefits		2,427,378			24			21,648									21,672
Stock-based compensation								20,574									20,574
Repurchase and retirement of common stock		(2,165,161	)		(21	)		(5,611	)		(28,953	)					(34,585	)
Dividends paid											(37,308	)					(37,308	)
Disqualified dispositions								(518	)								(518	)
Balance at December 31, 2009		116,051,811		$	1,161		$	336,059		$	303,655		$	13,545		$	654,420
Net income											109,116						109,116
Foreign currency translation adjustment (net of $926 tax benefit)														(5,248	)		(5,248	)
Unrealized gain on securities available-for-sale (net of $115 tax expense)														653			653
Unrealized loss on derivative instruments (net of $1,705 tax benefit)														(9,660	)		(9,660	)
Total comprehensive income																	94,861
Issuance of common stock under employee plans, including tax benefits		3,788,994			38			51,814									51,852
Stock-based compensation								18,897									18,897
Repurchase and retirement of common stock		(2,089,098	)		(21	)		(6,051	)		(35,790	)					(41,862	)
Business acquisition		153,268			1			2,998									2,999
Dividends paid											(40,618	)					(40,618	)
Disqualified dispositions								3,996									3,996
Balance at December 31, 2010		117,904,975		$	1,179		$	407,713		$	336,363		$	(710	)	$	744,545
Net income											94,072						94,072
Foreign currency translation adjustment (net of $190 tax benefit)														(1,046	)		(1,046	)
Unrealized loss on securities available-for-sale (net of $157 tax benefit)														(860	)		(860	)
Unrealized loss on derivative instruments (net of $161 tax benefit)														(884	)		(884	)
Total comprehensive income																	91,282
Issuance of common stock under employee plans, including tax benefits		2,715,253			27			32,878									32,905
Stock-based compensation								23,106									23,106
Business acquisition		56,915			1			1,813									1,814
Dividends paid											(47,961	)					(47,961	)
Disqualified dispositions								6,320									6,320
Balance at December 31, 2011		120,677,143		$	1,207		$	471,830		$	382,474		$	(3,500	)	$	852,011

The accompanying notes are an integral part of these financial statements.

NATIONAL INSTRUMENTS CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Note 1 – Operations and summary of significant accounting policies

National Instruments Corporation is a Delaware corporation. We provide flexible application software and modular, multifunction hardware that users combine with industry-standard computers, networks and third party devices to create measurement, automation and embedded systems, which we also refer to as “virtual instruments.” Our approach gives customers the ability to quickly and cost-effectively design, prototype and deploy unique custom-defined solutions for their design, control and test application needs. We offer hundreds of products used to create virtual instrumentation systems for general, commercial, industrial and scientific applications. Our products may be used in different environments, and consequently, specific application of our products is determined by the customer and generally is not known to us. We approach all markets with essentially the same products, which are used in a variety of applications from research and development to production testing, monitoring and industrial control. The following industries and applications are served by us worldwide: advanced research, automotive, commercial aerospace, computers and electronics, continuous process manufacturing, education, government/defense, medical research/pharmaceutical, power/energy, semiconductors, automated test equipment, telecommunications and others. These financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America.

Principles of consolidation

The Consolidated Financial Statements include the accounts of National Instruments Corporation and its subsidiaries. All significant intercompany accounts and transactions have been eliminated.

Use of estimates

The preparation of our financial statements in conformity with U.S. generally accepted accounting principles requires us to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues, expenses and related disclosures of contingent assets and liabilities. We base our estimates on past experience and other assumptions that we believe are reasonable under the circumstances, and we evaluate these estimates on an ongoing basis. Our critical accounting policies are those that affect our financial statements materially and involve difficult, subjective or complex judgments by management. Although these estimates are based on management's best knowledge of current events and actions that may impact the company in the future, actual results may be materially different from the estimates.

Cash and cash equivalents

Cash and cash equivalents include cash and highly liquid investments with maturities of three months or less at the date of acquisition.

Short-Term Investments

We value our available-for-sale short term investments based on pricing from third party pricing vendors, who may use quoted prices in active markets for identical assets (Level 1 inputs) or inputs other than quoted prices that are observable either directly or indirectly (Level 2 inputs) in determining fair value. We classify all of our fixed income available-for-sale securities as having Level 2 inputs. The valuation techniques used to measure the fair value of our financial instruments having Level 2 inputs were derived from non-binding market consensus prices that are corroborated by observable market data, quoted market prices for similar instruments, or pricing models, such as discounted cash flow techniques. We believe all of these sources reflect the credit risk associated with each of our available for sale short term investments. Short-term investments available-for-sale consists of debt securities issued by states of the U.S. and political subdivisions of the U.S., corporate debt securities and debt securities issued by U.S. government corporations and agencies as well as debt securities issued by foreign governments. All short-term investments available-for-sale have contractual maturities of less than 24 months.

Our investments are classified as available-for-sale and accordingly are reported at fair value, with unrealized gains and losses reported as other comprehensive income, a component of stockholders’ equity. Unrealized losses are charged against income when a decline in fair value is determined to be other than temporary. Investments with maturities beyond one year are classified as short-term based on their highly liquid nature and because such marketable securities represent the investment of cash that is available for current operations. The fair value of our short-term investments in debt securities at December 31, 2011 and December 31, 2010 was $224 million and $131 million, respectively. The increase was due to the net purchase of $91 million of short-term investments which was done to continue the diversification our holdings from money market accounts to debt securities and to take advantage of higher yields associated with longer maturity debt securities. We have $32 million U.S. dollar equivalent of German government sovereign debt that is denominated in Euro. Our German government sovereign debt holdings have a maximum maturity of 18 months and carry Aaa/AAA ratings.

We follow the guidance provided by FASB ASC 320 to assess whether our investments with unrealized loss positions are other than temporarily impaired. Realized gains and losses and declines in value judged to be other than temporary are determined based on the specific identification method and are reported in other income (expense), net, in our Consolidated Statements of Income. We did not identify or record any other-than-temporary impairments during 2011, 2010 and 2009.

Accounts Receivable, net

Accounts receivable are recorded net of allowances for sales returns of $1.6 million and $1.7 million at December 31, 2011 and 2010, respectively, and net of allowances for doubtful accounts of $2.6 million and $2.1 million at December 31, 2011 and 2010, respectively. A provision for estimated sales returns is made by reducing recorded revenue based on historical experience. We analyze historical returns, current economic trends and changes in customer demand of our products when evaluating the adequacy of our sales returns allowance. Our allowance for doubtful accounts is based on historical experience. We analyze historical bad debts, customer concentrations, customer creditworthiness and current economic trends when evaluating the adequacy of our allowance for doubtful accounts.

Year	Description	Balance at Beginning of Period		Provisions			Write-Offs			Balance at End of Period
2009	Allowance for doubtful accounts and sales returns	$	5,682	$	337		$	1,400		$	4,619
2010	Allowance for doubtful accounts and sales returns	$	4,619	$	(578	)	$	273		$	3,768
2011	Allowance for doubtful accounts and sales returns	$	3,768	$	385		$	(88	)	$	4,241

Inventories, net

Inventories are stated at the lower-of-cost or market. Cost is determined using standard costs, which approximate the first-in first-out (“FIFO”) method. Cost includes the acquisition cost of purchased components, parts and subassemblies, in-bound freight costs, labor and overhead. Market is replacement cost with respect to raw materials and is net realizable value with respect to work in process and finished goods.

Inventory is shown net of adjustment for excess and obsolete inventories of $4.2 million, $3.3 million and $4.4 million at December 31, 2011, 2010 and 2009, respectively.

Year	Description	Balance at Beginning of Period		Provisions		Write-Offs		Balance at End of Period
2009	Adjustment for excess and obsolete inventories	$	4,409	$	1,492	$	1,511	$	4,390
2010	Adjustment for excess and obsolete inventories	$	4,390	$	1,785	$	2,835	$	3,340
2011	Adjustment for excess and obsolete inventories	$	3,340	$	3,554	$	2,689	$	4,205

Property and equipment, net

Property and equipment are recorded at cost. Depreciation is computed using the straight-line method over the estimated useful lives of the assets, which range from twenty to forty years for buildings, three to seven years for purchased internal use software and for equipment which are each included in furniture and equipment. Leasehold improvements are depreciated over the shorter of the life of the lease or the asset.

Intangible assets, net

We capitalize costs related to the development and acquisition of certain software products. Capitalization of costs begins when technological feasibility has been established and ends when the product is available for general release to customers. Technological feasibility for our products is established when the product is available for beta release. Amortization is computed on an individual product basis for those products available for market and is recognized based on the product’s estimated economic life, generally three years.

We use the services of outside counsel to search for, document, and apply for patents. Those costs, along with any filing or application fees, are capitalized. Costs related to patents which are abandoned are written off. Once a patent is granted, the patent costs are amortized ratably over the legal life of the patent, generally ten to seventeen years.

At each balance sheet date, the unamortized costs for all intangible assets are reviewed by management and reduced to net realizable value when necessary.

Goodwill

The excess purchase price over the fair value of assets acquired is recorded as goodwill. As we have one operating segment, we allocate goodwill to one reporting unit for goodwill impairment testing. Goodwill is tested for impairment on an annual basis, and between annual tests if indicators of potential impairment exist, using a fair-value-based approach based on the market capitalization of the reporting unit. Our annual impairment test was performed as of February 28, 2011. No impairment of goodwill was identified during 2011 and 2010. Goodwill is deductible for tax purposes in certain jurisdictions.

Concentrations of credit risk

We maintain cash and cash equivalents with various financial institutions located in many countries throughout the world. At December 31, 2011, $106.4 million or 75% of our cash and cash equivalents was held in cash in various operating accounts with financial institutions throughout the world, $22.7 million or 16% was held in money market accounts and $13.5 million or 9% was held in U.S. Treasuries. The most significant of our operating accounts was our domestic operating account which held approximately $8.1 million or 6% of our total cash and cash equivalents at a bank that carried A+/A2/AA- ratings at December 31, 2011. From a geographic standpoint, approximately $37.1 million or 26% was held in various domestic accounts with financial institutions and $105.5 million or 74% was held in various accounts outside of the U.S. with financial institutions. At December 31, 2011, our short-term investments consist of $32.2 million or 14% of foreign government bonds, $157.4 million or 70% of U.S. treasuries and agencies, $12.4 million or 6% of municipal bonds, $18.6 million or 8% of corporate bonds and $2.9 million or 1% in time deposits.

The goal of our investment policy is to manage our investment portfolio to preserve principal and liquidity while maximizing the return on our investment portfolio through the full investment of available funds. We place our cash investments in instruments that meet credit quality standards, as specified in our corporate investment policy guidelines. These guidelines also limit the amount of credit exposure to any one issue, issuer or type of instrument. Our cash equivalents and short-term investments carried ratings from the major credit rating agencies that were in accordance with our corporate investment policy. Our investment policy allows investments in the following; government and federal agency obligations, repurchase agreements (“Repos”), certificates of deposit and time deposits, corporate obligations, medium term notes and deposit notes, commercial paper including asset-backed commercial paper (“ABCP”), puttable bonds, general obligation and revenue bonds, money market funds, taxable commercial paper, corporate notes/bonds, municipal notes, municipal obligations, variable rate demand notes and tax exempt commercial paper. All such instruments must carry minimum ratings of A1/P1/F1, MIG1/VMIG1/SP1 and A2/A/A, as applicable, all of which are considered “investment grade”. Our investment policy for marketable securities requires that all securities mature in three years or less, with a weighted average maturity of no longer than 18 months with at least 10% maturing in 90 days or less. (See Note 2 – Cash, cash equivalents, short-term and long-term investments in Notes to Consolidated Financial Statements for further discussion and analysis of our investments.).

Concentration of credit risk with respect to trade accounts receivable is limited due to our large number of customers and their dispersion across many countries and industries. The amount of sales to any individual customer did not exceed 4% of revenue for the periods presented. The largest trade account receivable from any individual customer at December 31, 2011 was approximately $4.9 million.

Key supplier risk

Our manufacturing processes use large volumes of high-quality components and subassemblies supplied by outside sources. Several of these components are available through sole or limited sources. Supply shortages or quality problems in connection with some of these key components could require us to procure components from replacement suppliers, which would cause significant delays in fulfillment of orders and likely result in additional costs. In order to manage this risk, we maintain safety stock of some of these single sourced components and subassemblies and perform regular assessments of suppliers performance, grading key suppliers in critical areas such as quality and “on-time” delivery.

Revenue recognition

We derive revenue primarily from the sale/licensing of integrated hardware and software solutions. Independent sales of application software licenses include post contract support services. In addition, training services are sold separately and revenue is recognized as the services are performed. The products and services are generally sold under standardized licensing and sales arrangements with payment terms ranging from net 30 days in the United States to net 30 days and up to net 90 days in some international markets. Approximately 86% of our product/license sales include both hardware and software in the customer arrangement, with a small percentage of sales including other services. We offer rights of return and standard warranties for product defects related to our products. The rights of return are generally for a period of up to 30 days after the delivery date. Our standard warranties cover periods ranging from 90 days to three years. We do not generally enter into contracts requiring product acceptance from the customer.

Revenue is recognized in accordance with the provisions of FASB ASC 985, when persuasive evidence of an arrangement exists, delivery has occurred, the fee is fixed or determinable, and collectability is probable. We enter into certain arrangements where we are obligated to deliver multiple products and/or services (“multiple elements”). In these transactions, we allocate the total revenue among the elements based on vendor specific objective evidence (“VSOE”) of fair value as determined by the sales price of each element when sold separately.

When VSOE of fair value is not available for a delivered element but is available for the undelivered element of a multiple element arrangement, sales revenue is generally recognized on the date the product is shipped, using the residual method under FASB ASC 985, with a portion of revenue recorded as deferred (unearned) due to applicable undelivered elements. Undelivered elements for our multiple element arrangements with a customer are generally restricted to post contract support and training and education. The amount of revenue allocated to these undelivered elements is based on the VSOE of fair value for those undelivered elements. Deferred revenue due to undelivered elements is recognized ratably over the service period or when the service is completed. When VSOE of fair value is not available for the undelivered element of a multiple element arrangement, sales revenue for the entire sales contract value is generally recognized ratably over the service period of the undelivered element, generally 12 months or when the service is completed in accordance with the subscription method. Deferred revenue at December 31, 2011 and 2010 was $90.1 million and $71.7 million, respectively.

The application of FASB ASC 985 requires judgment, including whether a software arrangement includes multiple elements, and if so, whether VSOE of fair value exists for those elements. Changes to the elements in a software arrangement, the ability to identify VSOE for those elements, the fair value of the respective elements, and changes to a product’s estimated life cycle could materially impact the amount of our earned and unearned revenue. Judgment is also required to assess whether future releases of certain software represent new products or upgrades and enhancements to existing products.

On January 1, 2011, we prospectively adopted accounting rules that changed the criteria for separating consideration in multiple-deliverable arrangements. The new rules changed the application of the residual method of allocation and require that arrangement consideration be allocated at the inception of an arrangement to all deliverables using the relative selling price method. The relative selling price method allocates any discount in the arrangement proportionally to each deliverable on the basis of each deliverable’s selling price. The selling price used for each deliverable will be based on VSOE if available, third–party evidence if vendor-specific objective evidence is not available, or estimated selling price if neither vendor-specific objective evidence nor third-party evidence is available. The adoption of the amended revenue recognition rules did not change the units of accounting for our revenue transactions. It also did not significantly change how we allocated the arrangement consideration to the various units of accounting or the timing of revenue. The impact of our adoption was not material to our consolidated financial statements for the year ended December 31, 2011.

Product revenue

Our product revenue is generated predominantly from the sales of measurement and automation products. Our products consist of application software and hardware components together with related driver software.

Software maintenance revenue

Software maintenance revenue is post contract customer support that provides the customer with unspecified upgrades/updates and technical support.

Shipping and handling costs

Our shipping and handling costs charged to customers are included in net sales, and the associated expense is recorded in cost of sales for all periods presented.

Warranty reserve

We offer a one-year limited warranty on most hardware products and extended two or three-year warranties on a subset of our hardware products, which is included in the sales price of many of our products. Provision is made for estimated future warranty costs at the time of the sale for the estimated costs that may be incurred under the basic limited warranty. Our estimate is based on historical experience and product sales.

The warranty reserve for the years ended December 31, 2011, 2010 and 2009, respectively, was as follows (in thousands):

	2011			2010			2009
Balance at the beginning of the period	$	921		$	921		$	952
Accruals for warranties issued during the period		2,954			1,993			1,991
Settlements made (in cash or in kind) during the period		(2,604	)		(1,993	)		(2,022	)
Balance at the end of the period	$	1,271		$	921		$	921

Loss contingencies

We accrue for probable losses from contingencies including legal defense costs, on an undiscounted basis, when such costs are considered probable of being incurred and are reasonably estimable. We periodically evaluate available information, both internal and external, relative to such contingencies and adjust this accrual as necessary.

Advertising expense

We expense costs of advertising as incurred. Advertising expense for the years ended December 31, 2011, 2010 and 2009 was $14.7 million, $13.2 million and $13.6 million, respectively.

Foreign currency translation

The functional currency for our international sales operations is the applicable local currency. The assets and liabilities of these operations are translated at the rate of exchange in effect on the balance sheet date and sales and expenses are translated at average rates. The resulting gains or losses from translation are included in a separate component of other comprehensive income. Gains and losses resulting from re-measuring monetary asset and liability accounts that are denominated in a currency other than a subsidiary’s functional currency are included in net foreign exchange gain (loss) and are included in net income.

Foreign currency hedging instruments

All of our derivative instruments are recognized on the balance sheet at their fair value. We currently use foreign currency forward and purchased option contracts to hedge our exposure to material foreign currency denominated receivables and forecasted foreign currency cash flows.

On the date the derivative contract is entered into, we designate the derivative as a hedge of the variability of foreign currency cash flows to be received or paid (“cash flow” hedge) or as a hedge of our foreign denominated net receivable positions (“other derivatives”). Changes in the fair value of derivatives that are designated and qualify as cash flow hedges and that are deemed to be highly effective are recorded in other comprehensive income. These amounts are subsequently reclassified into earnings in the period during which the hedged transaction is realized. The gain or loss on the other derivatives as well as the offsetting gain or loss on the hedged item attributable to the hedged risk is recognized in current earnings under the line item “Net foreign exchange gain (loss)”. We do not enter into derivative contracts for speculative purposes.

We formally document all relationships between hedging instruments and hedged items, as well as our risk-management objective and strategy for undertaking various hedge transactions at the inception of the hedge. This process includes linking all derivatives that are designated as cash flow hedges to specific forecasted transactions. We also formally assess, both at the hedge’s inception and on an ongoing basis, whether the hedging instruments are highly effective in offsetting changes in cash flows of hedged items.

We prospectively discontinue hedge accounting if (1) it is determined that the derivative is no longer highly effective in offsetting changes in the fair value of a hedged item (forecasted transactions); or (2) the derivative is de-designated as a hedge instrument, because it is unlikely that a forecasted transaction will occur. When hedge accounting is discontinued, the derivative is sold and the resulting gains and losses are recognized immediately in earnings.

Income taxes

We account for income taxes under the asset and liability method. Deferred tax assets and liabilities are recognized for the expected tax consequences of temporary differences between the tax basis of assets and liabilities and their reported amounts. Valuation allowances are established when necessary to reduce deferred tax assets to amounts which are more likely than not to be realized. Judgment is required in assessing the future tax consequences of events that have been recognized in our financial statements or tax returns. Variations in the actual outcome of these future tax consequences could materially impact our financial position or our results of operations. In estimating future tax consequences, all expected future events are considered other than enactments of changes in tax laws or rates. We account for uncertainty in income taxes recognized in our financial statements using prescribed recognition thresholds and measurement attributes for financial statement disclosure of tax positions taken or expected to be taken on our tax returns. Our continuing policy is to recognize interest and penalties related to income tax matters in income tax expense.

Earnings per share

Basic earnings per share (“EPS”) is computed by dividing net income by the weighted average number of common shares outstanding during each period. Diluted EPS is computed by dividing net income by the weighted average number of common shares and common share equivalents outstanding (if dilutive) during each period. The number of common share equivalents, which include stock options and restricted stock units, is computed using the treasury stock method.

The reconciliation of the denominators used to calculate basic EPS and diluted EPS for the years ended December 31, 2011, 2010 and 2009, respectively, are as follows (in thousands):

	Years Ended December 31,
	2011		2010		2009
Weighted average shares outstanding-basic		119,836		116,973		116,280
Plus: Common share equivalents
Stock options, restricted stock units		1,384		1,599		759
Weighted average shares outstanding-diluted		121,220		118,572		117,039

Stock awards to acquire 477,019, 322,896 and 4,067,964 shares for the years ended December 31, 2011, 2010 and 2009, respectively, were excluded in the computations of diluted EPS because the effect of including the stock options would have been anti-dilutive.

On January 21, 2011, our Board of Directors declared a 3 for 2 stock split which was effected as a stock dividend, and paid on February 21, 2011, to stockholders of record on February 4, 2011. All per share data and numbers of common shares, where appropriate, have been retroactively adjusted to reflect the stock split.

Stock-based compensation

Effective January 1, 2006, we adopted FASB ASC 718, Compensation – Stock Compensation (FASB ASC 718), using the modified-prospective-transition method. Under this method, prior periods are not restated. Under this transition method, stock compensation cost recognized beginning January 1, 2006 includes: (a) compensation cost for all share-based payments granted prior to, but not yet vested as of January 1, 2006, based on the grant date fair value estimated in accordance with the original provisions of FASB ASC 718, and (b) compensation cost for all share-based payments granted on or subsequent to January 1, 2006, based on the grant-date fair value estimated in accordance with the provisions of FASB ASC 718.

Comprehensive income

Our comprehensive income is comprised of net income, foreign currency translation and unrealized gains and losses on forward and option contracts and securities available-for-sale. Comprehensive income for 2011, 2010 and 2009 was $91.3 million, $94.9 million and $20.1 million, respectively.

Recently Issued Accounting Pronouncements

In October 2009, the FASB updated FASB ASC 605, Revenue Recognition (FASB ASC 605) that amended the criteria for separating consideration in multiple-deliverable arrangements. The amendments establish a selling price hierarchy for determining the selling price of a deliverable. The selling price used for each deliverable will be based on vendor-specific objective evidence if available, third–party evidence if vendor-specific objective evidence is not available, or estimated selling price if neither vendor-specific objective evidence nor third-party evidence is available. The amendments will change the application of the residual method of allocation and require that arrangement consideration be allocated at the inception of the arrangement to all deliverables using the relative selling price method. The relative selling price method allocates any discount in the arrangement proportionally to each deliverable on the basis of each deliverable’s selling price. This update was effective prospectively for revenue arrangements entered into or materially modified in fiscal years beginning on or after June 15, 2010. On January 1, 2011, we adopted the accounting update as required on a prospective basis. The adoption of the amended revenue recognition rules did not change the units of accounting for our revenue transactions. It also did not significantly change how we allocated the arrangement consideration to the various units of accounting or the timing of revenue. The impact of our adoption was not material to our consolidated financial statements for the year ended December 31, 2011. We cannot reasonably estimate the effect of adopting these standards on future financial periods as the impact will vary depending on the nature and volume of new or materially modified sales arrangements in any given period. In addition, as our, or our competitors’, pricing practices and strategies evolve, we may modify our pricing practices in the future. This may result in a different allocation of revenue to the deliverables in the multiple element arrangements from the current fiscal quarter, which may change the pattern and timing of revenue recognition for these elements, but will not change the total revenue recognized for the arrangement.

In January 2010, the FASB updated FASB ASC 820, Fair Value Measurements and Disclosures (FASB ASC 820) that requires additional disclosures and clarifies existing disclosures regarding fair value measurements. The additional disclosures include (i) transfers in and out of Levels 1 and 2 and (ii) activity in Level 3 fair value measurements. The update provides amendments that clarify existing disclosures on level of disaggregation and disclosures about inputs and valuation techniques. This update is effective for interim and annual reporting periods beginning after December 15, 2009, except for the disclosures about purchases, sales, issuances, and settlements in the roll forward of activity in Level 3 fair value measurements. These disclosures are effective for fiscal years beginning after December 15, 2010, and for interim periods within those fiscal years. We adopted the update on January 1, 2010 as required and subsequently adopted on January 1, 2011, the update surrounding disclosures on Level 3 fair value measurements and concluded it did not have a material impact on our consolidated financial position or results of operations. In May 2011, the FASB updated FASB ASC 820 that resulted in common fair value measurement and disclosure requirements in U.S. GAAP and International Financial Reporting Standards (IFRSs). Some of the amendments clarify the FASB’s intent about the application of existing fair value measurement requirements. Other amendments change a particular principle or requirement for measuring fair value or for disclosing information about fair value measurements. The amendments are to be applied prospectively and are effective during interim and annual periods beginning after December 15, 2011. We are currently evaluating the requirements of this update and have not yet determined the impact on our consolidated financial statements.

In June 2011, the FASB updated FASB ASC 220, Comprehensive Income (FASB ASC 220) that gives an entity the option to present the total of comprehensive income, the components of net income, and the components of other comprehensive income either in a single continuous statement of comprehensive income or in two separate but consecutive statements. In both choices, an entity is required to present each component of net income along with total net income, each component of other comprehensive income along with a total for other comprehensive income, and a total amount for comprehensive income.  The update does not change the items that must be reported in other comprehensive income or when an item of other comprehensive income must be reclassified to net income. The update does not change the option for an entity to present components of other comprehensive income either net of related tax effects or before related tax effects, with one amount shown for the aggregate income tax expense or benefit related to the total of other comprehensive income items. The update does not affect how earnings per share is calculated or presented. The update should be applied retrospectively and is effective for fiscal years, and interim periods within those years, beginning after December 15, 2011. We are currently evaluating the requirements of this update and have not yet determined the impact on our consolidated financial statements.

In September 2011, the FASB updated FASB ASC 350, Goodwill and Other (FASB ASC 350) that gives an entity the option to first assess qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If, after assessing the totality of events or circumstances, an entity determines it is not more likely than not that the fair value of a reporting unit is less than its carrying amount, then performing the two-step impairment test is unnecessary. The amendments are effective for annual and interim goodwill impairment test performed for fiscal years beginning after December 15, 2011. We are currently evaluating the requirements of this update and have not yet determined the impact on our consolidated financial statements.

Note 2 – Cash, cash equivalents and short-term investments

The following table summarizes unrealized gains and losses related to our cash, cash equivalents and short-term investments designated as available-for-sale (in thousands):

	As of December 31, 2011
	Adjusted Cost		Gross Unrealized Gain		Gross Unrealized Loss			Cumulative Translation Adjustment			Fair Value
Cash	$	106,431	$	-	$	-		$	-		$	106,431
Money market accounts		22,677		-		-			-			22,677
Municipal bonds		12,381		11		-			-			12,392
Corporate bonds		18,631		-		(67	)		-			18,564
U.S. treasuries and agencies		170,926		2		(9	)		-			170,919
Foreign government bonds		36,460		240		(1	)		(4,482	)		32,217
Time deposits		2,912		-		-			-			2,912
Cash, Cash equivalents and short-term investments	$	370,418	$	253	$	(77	)	$	(4,482	)	$	366,112

	As of December 31, 2010
	Adjusted Cost		Gross Unrealized Gain		Gross Unrealized Loss			Cumulative Translation Adjustment			Fair Value
Cash	$	86,344	$	-	$	-		$	-		$	86,344
Money market accounts		133,103		-		-			-			133,103
Municipal bonds		16,843		18		-			-			16,861
Corporate bonds		56,141		38		(69	)		-			56,110
U.S. treasuries and agencies		23,142		13		(20	)		-			23,135
Foreign government bonds		36,010		89		(32	)		(3,410	)		32,657
Time deposits		2,452		-		-			-			2,452
Cash, Cash equivalents and short-term investments	$	354,035	$	158	$	(121	)	$	(3,410	)	$	350,662

The following table summarizes the contractual maturities of our available-for-sale debt securities (in thousands):

	As of December 31, 2011
	Adjusted Cost		Fair Value
Due in less than 1 year	$	215,817	$	213,618
Due in 1 to 5 years		25,493		23,386
Total available-for-sale debt securities	$	241,310	$	237,004
Due in less than 1 year	Adjusted Cost		Fair Value
Municipal bonds	$	12,381	$	12,392
Corporate bonds		14,435		14,392
U.S. treasuries and agencies		167,924		167,917
Foreign government bonds		18,165		16,005
Time deposits		2,912		2,912
Total available-for-sale debt securities	$	215,817	$	213,618
Due in 1 to 5 years	Adjusted Cost		Fair Value
Corporate bonds	$	4,196	$	4,172
U.S. treasuries and agencies		3,002		3,002
Foreign government bonds		18,295		16,212
Total available-for-sale debt securities	$	25,493	$	23,386

Note 3 – Fair value measurements

We define fair value to be the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. When determining the fair value measurements for assets and liabilities required or permitted to be recorded at fair value, we consider the principal or most liquid market and assumptions that market participants would use when pricing the asset or liability.

We follow a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value into three broad levels. The level in the fair value hierarchy within which the fair value measurement falls is determined based on the lowest level input that is significant to the fair value measurement. The three values of the fair value hierarchy are the following:

Level 1 – Quoted prices in active markets for identical assets or liabilities

Level 2 – Inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly

Level 3 – Inputs that are not based on observable market data

Assets and liabilities measured at fair value on a recurring basis are summarized below (in thousands):

	Fair Value Measurements at Reporting Date Using
Description	December 31, 2011			Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)
Assets
Money Market Funds	$	22,677		$	22,677	$	-		$	-
U.S. Treasuries and Agencies		13,500					13,500
Short-term investments available for sale:
Municipal bonds		12,392			-		12,392			-
Corporate bonds		18,564			-		18,564			-
U.S. treasuries and agencies		157,419			-		157,419			-
Foreign government bonds		32,217			-		32,217			-
Time deposits		2,912			2,912		-			-
Derivatives		4,297			-		4,297			-
Total Assets	$	263,978		$	25,589	$	238,389		$	-
Liabilities
Derivatives	$	(4,542	)	$	-	$	(4,542	)	$	-
Total Liabilities	$	(4,542	)	$	-	$	(4,542	)	$	-

	Fair Value Measurements at Reporting Date Using
Description	December 31, 2010			Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)
Assets
Money Market Funds	$	133,103		$	133,103	$	-		$	-
Short-term investments available for sale:
Municipal bonds		16,861			-		16,861			-
Corporate bonds		56,110			-		56,110			-
U.S. treasuries and agencies		23,135			-		23,135			-
Foreign government bonds		32,657			-		32,657			-
Time deposits		2,452			2,452		-			-
Derivatives		2,325			-		2,325			-
Total Assets	$	266,643		$	135,555	$	131,088		$	-
Liabilities
Derivatives	$	(3,733	)	$	-	$	(3,733	)	$	-
Total Liabilities	$	(3,733	)	$	-	$	(3,733	)	$	-

We value our available-for-sale short term investments based on pricing from third party pricing vendors, who may use quoted prices in active markets for identical assets (Level 1 inputs) or inputs other than quoted prices that are observable either directly or indirectly (Level 2 inputs) in determining fair value. We classify all of our fixed income available-for-sale securities as having Level 2 inputs. The valuation techniques used to measure the fair value of our financial instruments having Level 2 inputs were derived from non-binding market consensus prices that are corroborated by observable market data, quoted market prices for similar instruments, or pricing models, such as discounted cash flow techniques. We believe all of these sources reflect the credit risk associated with each of our available for sale short term investments. Short-term investments available-for-sale consists of debt securities issued by states of the U.S. and political subdivisions of the U.S., corporate debt securities and debt securities issued by U.S. government corporations and agencies as well as debt securities issued by foreign governments. All short-term investments available-for-sale have contractual maturities of less than 24 months.

Derivatives include foreign currency forward and option contracts. Our foreign currency forward contracts are valued using an income approach (Level 2) based on the spot rate less the contract rate multiplied by the notional amount. Our foreign currency option contracts are valued using a market approach based on the quoted market prices which are derived from observable inputs including current and future spot rates, interest rate spreads as well as quoted market prices of similar instruments. We consider counterparty credit risk in the valuation of our derivatives. Counterparty credit risk did not impact the valuation of our derivatives at December 31, 2011 and 2010. There were not any transfers in or out of Level 1 or Level 2 during the year ended December 31, 2011.

We previously reported certain of our cash equivalents and short-term investments available-for-sale as using Level 1 market inputs. We have determined that the pricing methods for certain of these investments use significant other observable inputs and should have been reported as Level 2. Accordingly, these investments held in prior periods are now reported as Level 2. This change had no impact on the fair value of our investments in any of the periods presented.

We did not have any items that were measured at fair value on a nonrecurring basis at December 31, 2011 and December 31, 2010.

Note 4 – Derivative instruments and hedging activities

We recognize all of our derivative instruments as either assets or liabilities in our statements of financial position at fair value. The accounting for changes in the fair value (i.e., gains or losses) of a derivative instrument depends on whether it has been designated and qualifies as part of a hedging relationship and further, on the type of hedging relationship. For those derivative instruments that are designated and qualify as hedging instruments, we designate the hedging instrument, based upon the exposure being hedged, as a fair value hedge, cash flow hedge, or a hedge of a net investment in a foreign operation.

We have operations in over 40 countries. Sales outside of the Americas accounted for 60% and 59% of our revenues for the years ended December 31, 2011 and 2010, respectively.  Our activities expose us to a variety of market risks, including the effects of changes in foreign currency exchange rates. These financial risks are monitored and managed by us as an integral part of our overall risk management program.

We maintain a foreign currency risk management strategy that uses derivative instruments (foreign currency forward and purchased option contracts) to help protect our earnings and cash flows from fluctuations caused by the volatility in currency exchange rates. Movements in foreign currency exchange rates pose a risk to our operations and competitive position, since exchange rate changes may affect our profitability and cash flow, and the business or pricing strategies of our non-U.S. based competitors.

The vast majority of our foreign sales are denominated in the customers’ local currency. We purchase foreign currency forward and option contracts as hedges of forecasted sales that are denominated in foreign currencies and as hedges of foreign currency denominated receivables. These contracts are entered into to help protect against the risk that the eventual dollar-net-cash inflows resulting from such sales or firm commitments will be adversely affected by changes in exchange rates. We also purchase foreign currency forward contracts as hedges of forecasted expenses that are denominated in foreign currencies. These contracts are entered into to help protect against the risk that the eventual dollar-net-cash outflows resulting from foreign currency operating and cost of revenue expenses will be adversely affected by changes in exchange rates.

We designate foreign currency forward and purchased option contracts as cash flow hedges of forecasted revenues or forecasted expenses. In addition, we hedge our foreign currency denominated balance sheet exposures using foreign currency forward contracts that are not designated as hedging instruments. None of our derivative instruments contain a credit-risk-related contingent feature.

Cash flow hedges

To help protect against the reduction in value caused by a fluctuation in foreign currency exchange rates of forecasted foreign currency cash flows resulting from international sales over the next one to two years, we have instituted a foreign currency cash flow hedging program. We hedge portions of our forecasted revenue and forecasted expenses denominated in foreign currencies with forward and purchased option contracts. For forward contracts, when the dollar strengthens significantly against the foreign currencies, the change in the present value of future foreign currency cash flows may be offset by the change in the fair value of the forward contracts designated as hedges. For option contracts, when the dollar strengthens significantly against the foreign currencies, the change in the present value of future foreign currency cash flows may be offset by the change in the fair value of the option contracts net of the premium paid designated as hedges. Our foreign currency purchased option contracts are purchased “at-the-money” or “out-of-the-money”. We purchase foreign currency forward and option contracts for up to 100% of our forecasted exposures in selected currencies (primarily in Euro, Japanese yen, British pound sterling, Korean won and Hungarian forint) and limit the duration of these contracts to 40 months or less.

For derivative instruments that are designated and qualify as a cash flow hedge, the effective portion of the gain or loss on the derivative is reported as a component of accumulated other comprehensive income (“OCI”) and reclassified into earnings in the same line item (net sales, operating expenses, or cost of sales) associated with the forecasted transaction and in the same period or periods during which the hedged transaction affects earnings. Gains and losses on the derivative representing either hedge ineffectiveness or hedge components excluded from the assessment of effectiveness are recognized in current earnings or expenses during the current period and are classified as a component of “net foreign exchange gain (loss)”. Hedge effectiveness of foreign currency forwards and purchased option contracts designated as cash flow hedges are measured by comparing the hedging instrument’s cumulative change in fair value from inception to maturity to the forecasted transaction’s terminal value.

We held forward contracts with a notional amount of $61.0 million dollar equivalent of Euro, $43.6 million dollar equivalent of Japanese yen, $3.3 million dollar equivalent of Korean won and $28.2 million dollar equivalent of Hungarian forint at December 31, 2011. These contracts are for terms of up to 24 months. At December 31, 2010, we held forward contracts with a notional amount of $28.3 million dollar equivalent of Euro, $6.0 million dollar equivalent of British pound sterling, $18.4 million dollar equivalent of Japanese yen, and $33.4 million dollar equivalent of Hungarian forint.

We did not have any purchased option contracts at December 31, 2011 and December 31, 2010.

At December 31, 2011, we expect to reclassify $1.8 million of gains on derivative instruments from accumulated other comprehensive income to net sales during the next twelve months when the hedged international sales occur, $856,000 of losses on derivative instruments from accumulated OCI to cost of sales when the cost of sales are incurred and $486,000 of losses on derivative instruments from accumulated OCI to operating expenses during the next twelve months when the hedged operating expenses occur. Expected amounts are based on derivative valuations at December 31, 2011. Actual results may vary as a result of changes in the corresponding exchange rate subsequent to this date.

We did not record any ineffectiveness from our hedges during the year ended December 31, 2011.

Other Derivatives

Other derivatives not designated as hedging instruments consist primarily of foreign currency forward contracts that we use to hedge our foreign denominated net receivable or net payable positions to protect against the change in value caused by a fluctuation in foreign currency exchange rates. We typically attempt to hedge up to 90% of our outstanding foreign denominated net receivables or net payables and typically limit the duration of these foreign currency forward contracts to approximately 120 days. The gain or loss on the derivatives as well as the offsetting gain or loss on the hedge item attributable to the hedged risk is recognized in current earnings under the line item “net foreign exchange gain (loss)”. As of December 31, 2011 and December 31, 2010, we held foreign currency forward contracts with a notional amount of $53.8 million and $41.3 million, respectively.

The following tables present the fair value of derivative instruments on our Consolidated Balance Sheets and the effect of derivative instruments on our Consolidated Statements of Income.

Fair Values of Derivative Instruments (in thousands):

	Asset Derivatives
	December 31, 2011			December 31, 2010
	Balance Sheet Location	Fair Value		Balance Sheet Location	Fair Value
Derivatives designated as hedging instruments
Foreign exchange contracts - ST forwards	Prepaid expenses and other current assets	$	2,500	Prepaid expenses and other current assets	$	1,104
Foreign exchange contracts - LT forwards	Other long-term assets		190	Other long-term assets		490
Total derivatives designated as hedging instruments		$	2,690		$	1,594
Derivatives not designated as hedging instruments
Foreign exchange contracts - ST forwards	Prepaid expenses and other current assets	$	1,607	Prepaid expenses and other current assets	$	731
Total derivatives not designated as hedging instruments		$	1,607		$	731
Total asset derivatives		$	4,297		$	2,325

	Liability Derivatives
	December 31, 2011				December 31, 2010
	Balance Sheet Location	Fair Value			Balance Sheet Location	Fair Value
Derivatives designated as hedging instruments
Foreign exchange contracts - ST forwards	Accrued expenses and other liabilities	$	(2,007	)	Accrued expenses and other liabilities	$	(2,677	)
Foreign exchange contracts - LT forwards	Other long-term liabilities		(1,770	)	Other long-term liabilities		-
Total derivatives designated as hedging instruments		$	(3,777	)		$	(2,677	)
Derivatives not designated as hedging instruments
Foreign exchange contracts - ST forwards	Accrued expenses and other liabilities	$	(765	)	Accrued expenses and other liabilities	$	(1,056	)
Total derivatives not designated as hedging instruments		$	(765	)		$	(1,056	)
Total liability derivatives		$	(4,542	)		$	(3,733	)

The following table shows the effect of derivative instruments on the Consolidated Statements of Income for the years ended December 31, 2011 and 2010, respectively (in thousands):

December 31, 2011
Derivatives in Cash Flow Hedging Relationship	Gain or (Loss) Recognized in OCI on Derivative (Effective Portion)			Location of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)			Location of Gain or (Loss) Recognized in Income on Derivative (Ineffective Portion)	Gain or (Loss) Recognized in Income on Derivative (Ineffective Portion)
Foreign exchange contracts - forwards and options	$	3,980		Net sales	$	(3,855	)	Net foreign exchange gain (loss)	$	-
Foreign exchange contracts - forwards and options		(2,889	)	Cost of sales		1,378		Net foreign exchange gain (loss)		-
Foreign exchange contracts - forwards and options		(1,396	)	Operating expenses		556		Net foreign exchange gain (loss)	$	-
Total	$	(305	)		$	(1,921	)		$	-

December 31, 2010
Derivatives in Cash Flow Hedging Relationship	Gain or (Loss) Recognized in OCI on Derivative (Effective Portion)			Location of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)		Location of Gain or (Loss) Recognized in Income on Derivative (Ineffective Portion)	Gain or (Loss) Recognized in Income on Derivative (Ineffective Portion)
Foreign exchange contracts - forwards and options	$	(5,058	)	Net sales	$	5,852	Net foreign exchange gain (loss)	$	-
Foreign exchange contracts - forwards and options		(3,166	)	Cost of sales		2,457	Net foreign exchange gain (loss)		-
Foreign exchange contracts - forwards and options		(1,669	)	Operating expenses		1,237	Net foreign exchange gain (loss)	$	-
Total	$	(9,893	)		$	9,546		$	-

Derivatives not Designated as Hedging Instruments	Location of Gain (Loss) Recognized in Income	Amount of Gain (Loss) Recognized in Income		Amount of Gain (Loss) Recognized in Income
		December 31, 2011		December 31, 2010
Foreign exchange contracts - forwards	Net foreign exchange gain/(loss)	$	951	$	(1,576	)
Total		$	951	$	(1,576	)

Note 5 – Inventories

Inventories, net at December 31, 2011 and December 31, 2010, consist of the following (in thousands):

	December 31,		December 31,
	2011		2010
Raw materials	$	56,139	$	55,218
Work-in-process		5,708		6,359
Finished goods		70,148		56,188
	$	131,995	$	117,765

Note 6 – Property and equipment

Property and equipment at December 31, 2011 and 2010, consist of the following (in thousands):

	December 31,			December 31,
	2011			2010
Land	$	23,730		$	17,760
Buildings		156,317			142,037
Furniture and equipment		206,557			175,439
	$	386,604		$	335,236
Accumulated depreciation		(196,456	)		(174,826	)
	$	190,148		$	160,410

Depreciation expense for the years ended December 31, 2011, 2010 and 2009, was $21.6 million, $21.0 million and $22.3 million, respectively.

Note 7 – Intangibles

Intangibles at December 31, 2011 and 2010 were as follows (in thousands):

	2011							2010
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Capitalized software development costs	$	53,086	$	(29,606	)	$	23,480	$	40,481	$	(16,217	)	$	24,264
Acquired technology		67,918		(32,210	)		35,708		35,634		(25,017	)		10,617
Patents		21,875		(7,992	)		13,883		20,790		(6,312	)		14,478
Other		24,614		(13,819	)		10,795		14,059		(10,602	)		3,457
	$	167,493	$	(83,627	)	$	83,866	$	110,964	$	(58,148	)	$	52,816

Software development costs capitalized during 2011, 2010 and 2009 were $12.6 million, $16.5 million and $13.3 million, respectively, and related amortization was $13.4 million, $10.7 million and $9.1 million, respectively. Included in these capitalized costs for the years ended December 31, 2011, 2010 and 2009, were costs related to stock based compensation of $539,000, $719,000 and $734,000, respectively.

Amortization of capitalized software development costs is computed on an individual product basis for those products available for market and is recognized based on the product’s estimated economic life, generally three years. Acquired intangible assets which include acquired technology and other are amortized over their useful lives, which range from three to eight years. Patents are amortized using the straight-line method over their estimated period of benefit, generally ten to seventeen years.  Total intangible assets amortization expenses were $25.5 million, $17.9 million and $16.5 million for the years ended December 31, 2011, 2010 and 2009, respectively.

Capitalized software development costs, acquired technology, patents and other have weighted-average useful lives of 2.1 years, 2.6 years, 6.9 years, and 2.4 years, respectively, as of December 31, 2011. The estimated future amortization expense related to intangible assets as of December 31, 2011 is as follows:

	Amount (in thousands)
2012	$	26,635
2013		20,192
2014		13,953
2015		9,523
2016		5,172
Thereafter		8,391
	$	83,866

The overall increase in our acquired technology and other intangible assets can be attributed to our acquisitions of AWR Corporation and Phase Matrix Inc. See Note 15 – Acquisitions of Notes to Consolidated Financial Statements for additional discussion related to these acquisitions.

Note 8 – Goodwill

The carrying amount of goodwill for 2010 and 2011 are as follows:

	Amount (in thousands)
Balance as of December 31, 2009	$	64,779
Acquisitions/purchase accounting adjustments		6,061
Divestitures		-
Foreign currency translation impact		(562	)
Balance as of December 31, 2010	$	70,278
Acquisitions/purchase accounting adjustments		60,728
Divestitures		-
Foreign currency translation impact		(259	)
Balance as of December 31, 2011	$	130,747

The excess purchase price over the fair value of assets acquired is recorded as goodwill. As we have one operating segment, we allocate goodwill to one reporting unit for goodwill impairment testing. Goodwill is tested for impairment on an annual basis, and between annual tests if indicators of potential impairment exist, using a fair-value-based approach based on the market capitalization of the reporting unit. Our annual impairment test was performed as of February 28, 2011. No impairment of goodwill was identified during 2011 and 2010. Goodwill is deductible for tax purposes in certain jurisdictions.

See Note 15 – Acquisitions of Notes to Consolidated Financial Statements for additional discussion related to acquisitions in 2011.

Note 9 – Income taxes

The components of income before income taxes are as follows (in thousands):

	Years Ended December 31,
	2011		2010		2009
Domestic	$	6,488	$	31,801	$	34,953
Foreign		104,646		96,311		15,292
	$	111,134	$	128,112	$	50,245

The provision for income taxes charged to operations is as follows (in thousands):

	Years Ended December 31,
	2011			2010			2009
Current tax expense:
U.S. federal	$	19,381		$	14,605		$	3,117
State		1,180			779			136
Foreign		8,568			3,752			13,760
Total current		29,129			19,136			17,013
Deferred tax expense (benefit):
U.S. federal		(12,790	)		1,545			9,920
State		(234	)		(39	)		387
Foreign		957			(1,646	)		(2,864	)
Total deferred		(12,067	)		(140	)		7,443
Change in valuation allowance		-			-			8,704
Total provision	$	17,062		$	18,996		$	33,160

Deferred tax liabilities (assets) at December 31, 2011 and 2010 as follows (in thousands):

	December 31,
	2011			2010
Capitalized software	$	7,933		$	8,029
Depreciation and amortization		16,910			12,468
Unrealized exchange gain		-			68
Unrealized gain on derivative instruments		105			-
Undistributed earnings of foreign subsidiaries		9,024			9,530
Gross deferred tax liabilities		33,972			30,095
Operating loss carryforwards		(61,148	)		(60,085	)
Intangible assets		(10,800	)		(32,462	)
Vacation and other accruals		(6,432	)		(5,010	)
Inventory valuation and warranty provisions		(10,724	)		(7,211	)
Doubtful accounts and sales provisions		(1,084	)		(1,001	)
Unrealized exchange loss		(33	)		-
Deferred revenue .		(1,991	)		(1,487	)
Accrued rent expenses		(132	)		(84	)
Accrued legal expenses		-			-
GSA accrual		(4,831	)		-
Unrealized loss on derivative instruments		-			(474	)
10% minority stock investment		(915	)		(899	)
Stock-based compensation		(4,640	)		(4,577	)
Research and development tax credit carryforward		(4,562	)		(2,212	)
Foreign tax credit carryforward		(1,006	)		(983	)
Other		(518	)		(622	)
Gross deferred tax assets		(108,816	)		(117,107	)
Valuation allowance		79,864			90,602
Net deferred tax liability (asset)	$	5,020		$	3,590

A reconciliation of income taxes at the U.S. federal statutory income tax rate to our effective tax rate follows:

	Years Ended December 31,
	2011			2010			2009
U.S. federal statutory tax rate		35	%		35	%		35	%
Foreign taxes (less) than federal statutory rate		(7	)		(9	)		(6	)
Change in valuation allowance		-			-			17
Research and development tax credit		(3	)		(3	)		(4	)
Enhanced deduction for certain research and development expenses		(16	)		(10	)		-
State income taxes, net of federal tax benefit		1			1			1
Employee share-based compensation		1			-			7
Intercompany profit		3			1			15
Other		1			-			1
Effective tax rate		15	%		15	%		66	%

As of December 31, 2011, we had a federal net operating loss carryforward of $2.5 million which expires during the years 2023 to 2030, and federal tax credit carryforwards of $5.6 million of which $3.2 million can be carried back one year and $2.4 million can be carried forward and expires during the years 2019 to 2029. Certain of these carryforwards are subject to limitations following a change in ownership.

As of December 31, 2011, 15 of our subsidiaries had available, for income tax purposes, foreign net operating loss carryforwards of an aggregate of approximately $318.6 million, of which $5.1 million expire during the years 2014 to 2021 and $313.5 million of which may be carried forward indefinitely. Our tax valuation allowance relates primarily to our ability to realize certain of these foreign net operating loss carryforwards and benefits of tax deductible goodwill in excess of book goodwill.

In 2003, we restructured the organization of our manufacturing operation in Hungary. The tax deductible goodwill in excess of book goodwill created by this restructuring resulted in our being required to record a gross deferred tax asset of $91.0 million. Because we did not expect to have sufficient taxable income in the relevant jurisdiction in future periods to realize the benefit of this deferred tax asset, a full valuation allowance was established. Following the approval of the merger of our Hungarian manufacturing operation with its Hungarian parent company in December 2007, we released $9.7 million, $8.7 million and $18.3 million in 2009, 2008 and 2007, respectively, of the valuation allowance previously established for the excess tax deductible goodwill to reflect the tax benefit we expected to realize in future periods.

Effective January 1, 2010, a new tax law in Hungary provided for an enhanced deduction for the qualified research and development expenses of NI Hungary Software and Hardware Manufacturing Kft. (“NI Hungary”). During the three months ended December 31, 2009, we obtained confirmation of the application of this new tax law for the qualified research and development expenses of NI Hungary. Based on the application of this new tax law to the qualified research and development expense of NI Hungary, we no longer expect to have sufficient future taxable income in Hungary to realize the benefits of these tax assets. As such, we recorded an income tax charge of $21.6 million during the three months ended December 31, 2009, $18.4 million of which was related to a valuation allowance on the previously recognized assets created by the restructuring and $3.2 million of which was related to tax benefits from other assets that we will no longer be able to realize as a result of this change. We do not expect to realize the tax benefit of the remaining assets created by the restructuring and therefore we have a full valuation allowance of $79.8 million against those assets at December 31, 2011.

We have not provided for U.S. federal income and foreign withholding taxes on approximately $432.5 million of certain non-U.S. subsidiaries’ undistributed earnings as of December 31, 2011. These earnings would become subject to taxes of approximately $144.2 million, if they were actually or deemed to be remitted to the parent company as dividends or if we should sell our stock in these subsidiaries. We intend to permanently reinvest the undistributed earnings.

We account for uncertainty in income taxes recognized in our financial statements using prescribed recognition thresholds and measurement attributes for financial statement disclosure of tax positions taken or expected to be taken on our tax returns. We recognized no material adjustment to the liability for unrecognized income tax benefits. A reconciliation of the beginning and ending amount of unrecognized tax benefit is as follows (in thousands):

	2011			2010
Balance at beginning of period	$	14,953		$	11,062
Additions based on tax positions related to the current year		6,300			7,000
Additions for tax positions of prior years		1,908			440
Reductions as a result of settlement with taxing authorities		-			(1,141	)
Reductions as a result of the lapse of the applicable statute of limitations		(3,667	)		(2,408	)
Balance at end of period	$	19,494		$	14,953

All of our unrecognized tax benefits at December 31, 2011 would affect our effective income tax rate if recognized. As of December 31, 2011, it is deemed reasonably possible that the Company will recognize tax benefits in the amount of $2.2 million in the next twelve months due to the closing of open tax years. The nature of the uncertainty relates to deductions taken on returns that have not been examined by the applicable tax authority.

We recognize interest and penalties related to income tax matters in income tax expense. During the years ended December 31, 2011 and 2010, we recognized interest expense related to uncertain tax positions of approximately $627,000 and $440,000, respectively. The tax years 2004 through 2011 remain open to examination by the major taxing jurisdictions in which we file income tax returns.

Note 10 – Stockholders’ equity and stock-based compensation

Stock option plans

Our stockholders approved the 1994 Incentive Stock Option Plan (the “1994 Plan”) on May 9, 1994. At the time of approval, 13,668,750 shares of our common stock were reserved for issuance under this plan. In 1997, an additional 10,631,250 shares of our common stock were reserved for issuance under this plan, and an additional 1,125,000 shares were reserved for issuance under this plan in 2004. The 1994 Plan terminated in May 2005, except with respect to outstanding awards previously granted thereunder.

Awards under the plan were either incentive stock options within the meaning of Section 422 of the Internal Revenue Code or nonqualified options. The right to purchase shares under the options vests over a five to ten-year period, beginning on the date of grant. Vesting of ten year awards may accelerate based on the Company’s previous year’s earnings and revenue growth but shares cannot accelerate to vest over a period of less than five years. Stock options must be exercised within ten years from date of grant. Stock options were issued with an exercise price which was equal to the market price of our common stock at the grant date. We estimate potential forfeitures of stock grants and adjust compensation cost recorded accordingly. The estimate of forfeitures will be adjusted over the requisite service period to the extent that actual forfeitures differ, or are expected to differ, from such estimates. Changes in estimated forfeitures will be recognized through a cumulative catch-up adjustment in the period of change and will also impact the amount of stock compensation expense to be recognized in future periods. During the year ended December 31, 2011, we did not make any changes in accounting principles or methods of estimates related to the 1994 Plan.

Transactions under all stock option plans are summarized as follows:

	Number of shares under option			Weighted average exercise price
Outstanding at December 31, 2008		6,408,850		$	17.31
Exercised		(569,445	)	$	10.27
Canceled		(272,151	)	$	17.87
Granted		-			-
Outstanding at December 31, 2009		5,567,254		$	17.95
Exercised		(2,291,757	)	$	17.55
Canceled		(941,049	)	$	20.93
Granted		-			-
Outstanding at December 31, 2010		2,334,448		$	17.15
Exercised		(932,895	)	$	29.31
Canceled		(84,337	)	$	16.23
Granted		-			-
Outstanding at December 31, 2011		1,317,216		$	18.07
Options exercisable at December 31:
2009		5,240,361		$	17.96
2010		2,138,886		$	17.07
2011		1,270,775		$	18.06

The aggregate intrinsic value of stock options at exercise, represented in the table above, was $13.0 million, $12.0 million and $2.3 million for the years ended December 31, 2011, 2010 and 2009, respectively. Total unrecognized stock-based compensation expense related to non-vested stock options was approximately $354,500 as of December 31, 2011, related to approximately 46,441 shares with a per share weighted average fair value of $11.86. We anticipate this expense to be recognized over a weighted average period of approximately 1.5 years.

		Outstanding and Exercisable by Price Range as of December 31, 2011
		Options Outstanding						Options Exercisable
Range of Exercise prices		Number outstanding as of 12/31/2011		Weighted average remaining contractual life		Weighted average exercise price		Number exercisable as of 12/31/2011		Weighted average exercise price
$	10.72 – $15.09		344,972		1.90	$	13.87		330,907	$	13.84
$	15.09 – $19.69		215,971		1.42	$	18.20		215,137	$	18.19
$	19.69 – $21.67		756,273		2.23	$	19.95		724,731	$	19.95
$	10.72 – $21.67		1,317,216		2.01	$	18.07		1,270,775	$	18.06

The weighted average remaining contractual life of options exercisable as of December 31, 2011 was 2.0 years. The aggregate intrinsic value of options outstanding as of December 31, 2011 was $10.4 million. The aggregate intrinsic value of options currently exercisable as of December 31, 2011 was $10.0 million. No options were granted in the years ended December 31, 2011, 2010 and 2009 as our incentive option plan terminated in May 2005.

Restricted stock plan

Our stockholders approved our 2005 Incentive Plan (the “2005 Plan”) on May 10, 2005. At the time of approval, 4,050,000 shares of our common stock were reserved for issuance under this plan, as well as the number of shares which had been reserved but not issued under the 1994 Plan (our incentive stock option plan which terminated in May 2005), and any shares that returned to the 1994 Plan as a result of termination of options or repurchase of shares issued under such plan. The 2005 Plan, administered by the Compensation Committee of the Board of Directors, provided for granting of incentive awards in the form of restricted stock and restricted stock units (“RSUs”) to directors, executive officers and employees of the Company and its subsidiaries. Awards vest over a three, five or ten-year period, beginning on the date of grant. Vesting of ten year awards may accelerate based on the Company’s previous year’s earnings and growth but ten year awards cannot accelerate to vest over a period of less than five years. The 2005 Plan terminated on May 11, 2010, except with respect to outstanding awards previously granted thereunder. There were 3,362,304 shares of common stock that were reserved but not issued under the 1994 Plan and the 2005 Plan as of May 11, 2010.

Our stockholders approved our 2010 Incentive Plan (the “2010 Plan”) on May 11, 2010. At the time of approval, 3,000,000 shares of our common stock were reserved for issuance under this plan, as well as the 3,362,304 shares of common stock that were reserved but not issued under the 1994 Plan and the 2005 Plan as of May 11, 2010, and any shares that are returned to the 1994 Plan and the 2005 Plan as a result of the forfeiture or termination of options or RSUs or repurchases of shares issued under these plans. The 2010 Plan, administered by the Compensation Committee of the Board of Directors, provides for granting of incentive awards in the form of restricted stock and RSUs to employees, directors and consultants of the Company and employees and consultants of any parent or subsidiary of the Company. Awards vest over a three, five or ten-year period, beginning on the date of grant. Vesting of ten year awards may accelerate based on the Company’s previous year’s earnings and growth but ten year awards cannot accelerate to vest over a period of less than five years. At December 31, 2011, there were 4,964,018 shares available for grant under the 2010 Plan.

We estimate potential forfeitures of RSUs and adjust compensation cost recorded accordingly. The estimate of forfeitures will be adjusted over the requisite service period to the extent that actual forfeitures differ, or are expected to differ, from such estimates. Changes in estimated forfeitures will be recognized through a cumulative catch-up adjustment in the period of change and will also impact the amount of stock compensation expense to be recognized in future periods. During the year ended December 31, 2011, we did not make any changes in accounting principles or methods of estimates related to the 2010 Plan.

Transactions under our Restricted Stock Plans are summarized as follows:

	RSUs
	Number of RSUs			Weighted Average Grant Price
Balance at December 31, 2008		3,247,842		$	17.99
Granted		906,124		$	14.53
Earned		(610,734	)	$	14.69
Canceled		(86,581	)	$	18.59
Balance at December 31, 2009		3,456,651		$	17.65
Granted		294,030		$	22.60
Earned		(680,188	)	$	23.05
Canceled		(74,196	)	$	18.47
Balance at December 31, 2010		2,996,297		$	17.97
Granted		1,370,666		$	30.14
Earned		(860,598	)	$	30.30
Canceled		(84,843	)	$	20.82
Balance at December 31, 2011		3,421,522		$	22.75

Total unrecognized stock-based compensation expense related to non-vested RSUs was approximately $75.1 million as of December 31, 2011, related to 3,421,522 shares with a per share weighted average fair value of $22.75. We anticipate this expense to be recognized over a weighted average period of approximately 7.4 years.

Employee stock purchase plan

Our employee stock purchase plan permits substantially all domestic employees and employees of designated subsidiaries to acquire our common stock at a purchase price of 85% of the lower of the market price at the beginning or the end of the purchase period. The plan has quarterly purchase periods generally beginning on February 1, May 1, August 1 and November 1 of each year. Employees may designate up to 15% of their compensation for the purchase of common stock under this plan.  On May 10, 2011, our stockholders approved an additional 3,000,000 shares for issuance under our employee stock purchase plan, and at December 31, 2011, we had 3,680,138 shares of common stock reserved for future issuance under this plan. During the year ended December 31, 2011, we issued 940,703 shares under this plan. The weighted average purchase price of the employees’ purchase rights for these shares was $21.82 per share and was estimated using the Black-Scholes model with the following assumptions:

	2011			2010			2009
Dividend expense yield		0.4	%		0.4	%		0.5	%
Expected life	3 months			3 months			3 months
Expected volatility		44	%		25	%		45	%
Risk-free interest rate		0.1	%		0.1	%		0.8	%

During the year ended December 31, 2011, we did not make any changes in accounting principles or methods of estimates related to the employee stock purchase plan.

Weighted average, grant date fair value of purchase rights granted under the Employee Stock Purchase Plan are as follows:

	Number of shares		Weighted average fair value
2009		1,257,804	$	3.83
2010		1,011,765	$	4.35
2011		940,703	$	6.56

Authorized Preferred Stock and Preferred Stock Purchase Rights Plan

We have 5,000,000 authorized shares of preferred stock. On January 21, 2004, our Board of Directors designated 750,000 of these shares as Series A Participating Preferred Stock in conjunction with its adoption of a Preferred Stock Rights Agreement (the “Rights Agreement”) and declaration of a dividend of one preferred share purchase right (a “Right”) for each share of common stock outstanding held as of May 10, 2004 or issued thereafter. Each Right will entitle its holder to purchase one one-thousandth of a share of National Instruments’ Series A Participating Preferred Stock at an exercise price of $200, subject to adjustment, under certain circumstances. The Rights Agreement was not adopted in response to any effort to acquire control of National Instruments.

The Rights only become exercisable in certain limited circumstances following the tenth day after a person or group announces acquisitions of or tender offers for 20% or more of our common stock. In addition, if an acquirer (subject to certain exclusions for certain current stockholders of National Instruments, an “Acquiring Person”) obtains 20% or more of our common stock, then each Right (other than the Rights owned by an Acquiring Person or its affiliates) will entitle the holder to purchase, for the exercise price, shares of our common stock having a value equal to two times the exercise price. Under certain circumstances, our Board of Directors may redeem the Rights, in whole, but not in part, at a purchase price of $0.01 per Right. The Rights have no voting privileges and are attached to and automatically traded with our common stock until the occurrence of specified trigger events. The Rights will expire on the earlier of May 10, 2014 or the exchange or redemption of the Rights.

There were not any shares of preferred stock issued and outstanding at December 31, 2011 and December 31, 2010.

Stock repurchases and retirements

From time to time, our Board of Directors has authorized various programs to repurchase shares of our common stock depending on market conditions and other factors. Under such programs, we repurchased a total of 2,089,098, 2,165,161 and 6,165,063 shares of our common stock at weighted average prices of $20.04, $15.97 and $16.81 per share, in the years ended December 31, 2010, 2009 and 2008, respectively. On April 21, 2010, our Board of Directors approved a new share repurchase program that increased the aggregate number of shares of common stock that we are authorized to repurchase from 1,011,147 to 4.5 million. At December 31, 2011, there were 3,932,245 shares remaining available for repurchase under this plan. This repurchase plan does not have an expiration date. We did not repurchase any shares of our common stock under this plan in the year ended December 31, 2011.

Note 11 – Employee retirement plan

We have a defined contribution retirement plan pursuant to Section 401(k) of the Internal Revenue Code. Substantially all domestic employees with at least 30 days of continuous service are eligible to participate and may contribute up to 15% of their compensation. The Board of Directors has elected to make matching contributions equal to 50% of employee contributions, which may be applied to a maximum of 6% of each participant’s compensation. Employees are eligible for matching contributions after one year of continuous service. Company contributions vest immediately. Our policy prohibits participants from direct investment in shares of our common stock within the plan. Company contributions charged to expense were $4.7 million, $4.4 million and $3.9 million in 2011, 2010 and 2009, respectively.

Note 12 – Segment information

We determine operating segments using the management approach. The management approach designates the internal organization that is used by management for making operating decisions and assessing performance as the source of our operating segments. It also requires disclosures about products and services, geographic areas and major customers.

We have defined our operating segment based on geographic regions. We sell our products in three geographic regions. Our sales to these regions share similar economic characteristics, similar product mix, similar customers, and similar distribution methods. Accordingly, we have elected to aggregate these three geographic regions into a single operating segment. Revenue from the sale of our products which are similar in nature and software maintenance are reflected as total net sales in our Consolidated Statements of Income.

Total net sales, operating income, interest income and long-lived assets, classified by the major geographic areas in which we operate, are as follows (in thousands):

	Years Ended December 31,
	2011		2010		2009
Net sales:
Americas	$	411,006	$	359,895	$	292,999
Europe		308,619		261,118		210,188
Asia Pacific		304,548		252,207		173,407
	$	1,024,173	$	873,220	$	676,594

	Years Ended December 31,
	2011			2010			2009
Operating income:
Americas	$	55,140		$	71,339		$	46,816
Europe		142,533			131,691			87,250
Asia Pacific		114,110			83,432			45,439
Unallocated:
Research and development expenses		(199,071	)		(158,149	)		(132,974	)
	$	112,712		$	128,313		$	46,531

	Years Ended December 31,
	2011		2010		2009
Interest income:
Americas	$	408	$	588	$	803
Europe		771		699		727
Asia Pacific		140		104		99
	$	1,319	$	1,391	$	1,629

	December 31,
	2011		2010
Long-lived assets:
Americas	$	110,153	$	103,033
Europe		47,000		40,083
Asia Pacific		32,995		17,294
	$	190,148	$	160,410

Total sales outside the U.S. for 2011, 2010 and 2009 were $645.7 million, $543.7 million and $412.7 million, respectively.

Note 13 – Commitments, contingencies and leases

We have commitments under non-cancelable operating leases primarily for office facilities throughout the world. Certain leases require us to pay property taxes, insurance and routine maintenance, and include escalation clauses. Future minimum lease payments as of December 31, 2011, for each of the next five years are as follows (in thousands):

2012	$	14,426
2013		10,252
2014		8,747
2015		7,707
2016		4,857
Thereafter		8,321
	$	54,810

Rent expense under operating leases was approximately $16.3 million, $13.5 million and $12.3 million for the years ended December 31, 2011, 2010 and 2009, respectively.

As of December 31, 2011, we have non-cancelable purchase commitments with various suppliers of customized inventory and inventory components totaling approximately $13.7 million over the next twelve months.

As of December 31, 2011, we have outstanding guarantees for payment of customs and foreign grants totaling approximately $4.8 million, which are generally payable over the next twelve months.

From November 1999 to May 2011, we sold products to the U.S. government under a contract with the General Services Administration ("GSA"). During such time, our sales under the contract were approximately 2% of our total sales. Our previous contract with GSA contained a price reduction or "most favored customer" pricing provision. For the past several months, we have been in discussions with GSA regarding our compliance with this pricing provision and have provided GSA with information regarding our pricing practices. GSA conducted an on-site review of our GSA pricing practices and orally informed us that GSA did not agree with our previous determination of the potential non-compliance amount.  GSA subsequently requested that we conduct a further analysis of the non-compliance amount based upon a methodology that GSA proposed. This analysis resulted in calculated overpayments (including added interest) by GSA to us of approximately $13.1 million. GSA is reviewing the analysis and has not yet officially responded, and has not made any formal demand for pricing adjustments related to our previous GSA contract. However, GSA may make such a demand in the future, and there can be no assurance that the amount of any such demand, if we were required to pay it, would not have a material adverse impact on our results of operations. If GSA believes that our pricing practices did not comply with the contract, GSA could conduct a formal investigation of such matter or could refer such matter to the U.S. Department of Justice for investigation, including an investigation regarding potential violations of the False Claims Act, which could result in litigation and the possible imposition of a damage remedy that includes treble damages plus civil penalties, and could also result in us being suspended or debarred from future government contracting. As a result of the foregoing, during the quarter ended September 30, 2011, we established an accrual of $13.1 million which represents the amount of the loss contingency that is reasonably estimable at this time. There can be no assurance that our actual losses will not exceed such reserve amount. Due to the complexities of conducting business with GSA, the relatively small amount of revenue we realized from our previous GSA contract, and our belief that we can continue to sell our products to U.S. government agencies through other contracting methods, we cancelled our contract with GSA in April 2011, effective May 2011. To date, we have not experienced any material adverse impact on our results of operations as a result of the cancellation of our previous GSA contract.

Note 14 – Litigation

We are not currently a party to any material litigation. However, in the ordinary course of our business, we are involved in legal actions, both as plaintiff and defendant, and could incur uninsured liability in any one or more of them. We also periodically receive notifications from various third parties related to alleged infringement of patents or intellectual property rights, commercial disputes or other matters. See Note 13 – Commitments and Contingencies in the Notes to our Consolidated Financial Statements, for discussion of the accrual we have recorded in connection with our previous GSA contract. No assurances can be given with respect to the extent or outcome of any future litigation or dispute.

Note 15 – Acquisitions

AWR Corporation

On June 30, 2011, we acquired all of the outstanding shares of AWR Corporation (AWR), a privately held company that is a leading supplier of electronic design automation software for designing radio frequency and high-frequency components and systems for the semiconductor, aerospace and defense, communications and test equipment industries. The acquisition is expected to improve customer productivity through increased interoperability between upfront design and validation and production test functions. The purchase price of the acquisition was $66 million consisting of $54 million in cash and a three-year earn-out arrangement. We funded the purchase price from existing cash balances.  The range of potential undiscounted payments that we could be required to make under the earn-out arrangement is between $0 and $29 million and are payable if AWR achieves certain revenue and operating income targets.  The fair value of the earn-out arrangement was estimated at $12 million using the income approach, the key assumptions which included probability-weighted revenue and operating expense growth projections.

The allocation of the purchase price was determined using the fair value of assets and liabilities acquired as of June 30, 2011.  The primary area which is not finalized is deferred taxes. Our consolidated financial statements include the operating results from the date of acquisition.  Pro-forma results of operations have not been presented because the effects of those operations were not material. The following table summarizes the allocation of the purchase price of AWR (in thousands):

	Amount
Net tangible assets acquired	$	10,718
Amortizable intangible assets		31,685
Deferred tax liability		(10,011	)
Goodwill		34,003
Total	$	66,395

Goodwill is not deductible for tax purposes. Amortizable intangible assets have useful lives of 5 years from the date of acquisition.

Phase Matrix Inc.

On May 20, 2011, we acquired all of the outstanding shares of Phase Matrix, Inc. (PMI), a privately held company that designs and manufactures radio frequency and microwave test and measurement instruments, subsystems and components.  The acquisition is expected to speed our deployment of high-performance RF and wireless technologies to our production test and R&D customers. The purchase price of the acquisition was $40.7 million consisting of $38.9 million in cash and $1.8 million in shares of our common stock.  We funded the cash portion of the purchase price from existing cash balances.

The allocation of the purchase price was determined using the fair value of assets and liabilities acquired as of May 20, 2011.  Our consolidated financial statements include the operating results from the date of acquisition. Pro-forma results of operations have not been presented because the effects of those operations were not material.  The following table summarizes the allocation of the purchase price of Phase Matrix, Inc. (in thousands):

	Amount
Net tangible assets acquired	$	5,624
Amortizable intangible assets		8,331
Goodwill		26,725
Total	$	40,680

Goodwill is deductible for tax purposes. Amortizable intangible assets have useful lives which range from 9 months to 8 years from the date of acquisition. These assets are also deductible for tax purposes.

Other acquisitions

On December 31, 2010, we acquired all of the outstanding shares of a privately-held company for $2.3 million in net cash with an additional $500,000 in net cash to be paid out over the next three years. The purchase price for this acquisition included net working capital of $187,000, amortizable intangible assets of $1.5 million, and goodwill of $1.1 million. Our consolidated financial statements include the operating results of the acquired company from the date of acquisition.

On February 1, 2010, we acquired all of the outstanding shares of a privately-held company for $2.2 million in net cash, $3.0 million in shares of our common stock with the remainder to be paid in cash over the next four years. The purchase price allocation for this acquisition included net working capital of $1.1 million, amortizable intangible assets of $5.0 million, and goodwill of $5.0 million. Our consolidated financial statements include the operating results of the acquired company from the date of acquisition.

For these other acquisitions, goodwill is not deductible for tax purposes. Existing technology, non-competition agreements, trademarks, and customer relationships have useful lives of 5 years, 3 years, 3 years, and 5 years, respectively, from the date of acquisition. These assets are not deductible for tax purposes.

Pro forma results of operations have not been presented because the effect of these acquisitions is not material either individually or in the aggregate to our consolidated results of operations.

Note 16 – Subsequent events

We have evaluated subsequent events through the date the financial statements were issued.

On January 24, 2012, our Board of Directors declared a quarterly cash dividend of $0.14 per common share, payable March 5, 2012, to stockholders of record on February 13, 2012.

EX-21.1

EXHIBIT 21.1

SUBSIDIARIES OF NATIONAL INSTRUMENTS CORPORATION

Unless noted, all subsidiaries are formed under local law.

DASYTEC USA, Incorporated, a New Hampshire corporation

Enterprise International Holding B.V., Netherlands

Hyperception, Inc., a Texas corporation

Measurement Computing Corporation, a Delaware corporation

National Instruments Armenia Corporation – a Texas corporation

National Instruments Asia Minor Ölcüm Cihazları Ticaret Limited Şirketi, Turkey

National Instruments Asia Pacific Pte. Ltd., Singapore

National Instruments Australia Corporation, a Texas corporation

National Instruments Belgium N.V.

National Instruments Brazil Ltda.

National Instruments Canada Co.

National Instruments China Corporation, a Texas corporation

National Instruments (Czech Republic) s.r.o.

National Instruments Corporation (UK) Limited, United Kingdom

National Instruments Costa Rica Ltda.

National Instruments de Mexico, S.A. de C.V.

National Instruments de Mexico Servicios, S.A. de C.V.

National Instruments Engineering ApS

National Instruments Engineering GmbH, Germany

National Instruments Engineering GmbH & Co. KG, Germany

National Instruments Europe Corporation, a Texas corporation

National Instruments Finland Oy

National Instruments France Corporation, a Texas corporation

National Instruments Germany GmbH

National Instruments Gesellschaft m.b.H., Austria

National Instruments Hong Kong Limited

National Instruments Hungary Trading Kft.

National Instruments Ireland Resources Limited

National Instruments Instrumentacija, avtomatizacija in upravljanje procesov d.o.o., Slovenija

National Instruments Israel Ltd.

National Instruments Italy s.r.l.

National Instruments Japan Kabushiki Kaisha

National Instruments (Korea) Corporation

National Instruments Lebanon Corporation, a Texas corporation

National Instruments Netherlands B.V.

National Instruments New Zealand Limited

National Instruments Poland Sp.Zo.o.

National Instruments Portugal Unipessoal Lda.

National Instruments Romania s.r.l.

National Instruments Russia Corporation, a Texas corporation

National Instruments Scandinavia Corporation, a Texas corporation

National Instruments Singapore (PTE) Ltd.

National Instruments Spain, S.L.

National Instruments Sweden A.B.

National Instruments Switzerland Corporation, a Texas corporation

National Instruments Taiwan Corporation, a Texas corporation

National Instruments Thailand Ltd.

NI Hungary Software and Hardware Manufacturing Kft.

NI Malaysia Sdn. Bhd.

NI Solutions (Proprietary) Limited, South Africa

NI Systems (India) Private Limited, India

Quality Instrumentation Solutions, Inc., a Texas corporation

Shanghai NI Instruments LTD, People’s Republic of China

Virtual Instruments SDN BHD, Malaysia

Washington Holding and Finance B.V., Netherlands

EX-23.1

EXHIBIT 23.1

Consent of Independent Registered Public Accounting Firm

We consent to the incorporation by reference in the Registration Statements (Form S-8 Nos. 333-145301, 333-127751, 333-118034, 333-91671, 333-166791 and 333-176047)  of National Instruments Corporation of our reports dated February 6, 2012, with respect to the consolidated financial statements of National Instruments Corporation, and the effectiveness of internal control over financial reporting of National Instruments Corporation, included in this Annual Report (Form 10-K) for the year ended December 31, 2011.

February 6, 2012	By:	/s/ Ernst & Young LLP
		Austin, Texas

EX-31.1

EXHIBIT 31.1

CERTIFICATION OF CHIEF EXECUTIVE OFFICER

PURSUANT TO 18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, James J. Truchard, certify that:

1. I have reviewed this report on Form 10-K of National Instruments Corporation;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant's other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date:  February 6, 2012	By:	/s/ James J. Truchard
		James J. Truchard
		Chief Executive Officer

EX-31.2

EXHIBIT 31.2

CERTIFICATION OF CHIEF FINANCIAL OFFICER

PURSUANT TO 18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Alex M. Davern, certify that:

1. I have reviewed this report on Form 10-K of National Instruments Corporation;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant's other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date:  February 6, 2012	By:	/s/ Alex M. Davern
		Alex M. Davern
		Chief Financial Officer

EX-32.1

EXHIBIT 32.1

CERTIFICATION OF CHIEF EXECUTIVE OFFICER AND CHIEF FINANCIAL OFFICER

PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

I, James J. Truchard, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the Annual Report of National Instruments Corporation on Form 10-K for the fiscal year ended December 31, 2011 fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and that information contained in such Form 10-K fairly presents in all material respects the financial condition and results of operations of National Instruments Corporation.

By:	/s/ James J. Truchard
	James J. Truchard
	Chief Executive Officer

I, Alex M. Davern, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the Annual Report of National Instruments Corporation on Form 10-K for the fiscal year ended December 31, 2011 fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and that information contained in such Form 10-K fairly presents in all material respects the financial condition and results of operations of National Instruments Corporation.

By:	/s/ Alex M. Davern
	Alex M. Davern
	Chief Financial Officer

XML

Operations And Summary Of Significant Accounting Policies (Schedule Of Allowance For Doubtful Accounts And Sales Returns) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Operations And Summary Of Significant Accounting Policies [Abstract]
Balance at Beginning of Period	$ 3,768	$ 4,619	$ 5,682
Provisions	385	(578)	337
Write-Offs	(88)	273	1,400
Balance at End of Period	$ 4,241	$ 3,768	$ 4,619

XML

Goodwill (Schedule Of Goodwill) (Details) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Goodwill [Abstract]
Balance	$ 70,278,000	$ 64,779,000
Acquisitions/purchase accounting adjustments	60,728,000	6,061,000
Divestitures	0	0
Foreign currency translation impact	(259,000)	(562,000)
Balance	130,747,000	70,278,000
Number of operating segments (allocated to goodwill impairment testing)	1
Goodwill impairment	$ 0	$ 0

XML

Derivative Instruments And Hedging Activities (Fair Values Of Derivative Instruments On Consolidated Statements Of Income) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (Loss) Recognized in OCI on Derivative (Effective Portion)	$ (305)	$ (9,893)
Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	(1,921)	9,546
Gain or (Loss) Recognized in Income on Derivative (Ineffective Portion)	0	0
Cash Flow Hedging [Member] | Foreign Exchange Contracts - Forwards And Options [Member] | Net Sales [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (Loss) Recognized in OCI on Derivative (Effective Portion)	3,980	(5,058)
Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	(3,855)	5,852
Gain or (Loss) Recognized in Income on Derivative (Ineffective Portion)	0	0
Cash Flow Hedging [Member] | Foreign Exchange Contracts - Forwards And Options [Member] | Cost Of Sales [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (Loss) Recognized in OCI on Derivative (Effective Portion)	(2,889)	(3,166)
Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	1,378	2,457
Gain or (Loss) Recognized in Income on Derivative (Ineffective Portion)	0	0
Cash Flow Hedging [Member] | Foreign Exchange Contracts - Forwards And Options [Member] | Operating Expenses [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (Loss) Recognized in OCI on Derivative (Effective Portion)	(1,396)	(1,669)
Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	556	1,237
Gain or (Loss) Recognized in Income on Derivative (Ineffective Portion)	0	0
Derivatives Not Designated As Hedging Instruments [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income	951	(1,576)
Derivatives Not Designated As Hedging Instruments [Member] | Foreign Exchange Forward [Member] | Foreign Currency Gain (Loss) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income	$ 951	$ (1,576)

XML

Segment Information (Schedule Of Net Sales, By Geographical Areas) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Schedule Of Net Sales By Major Geographic Areas [Line Items]
Net sales	$ 1,024,173	$ 873,220	$ 676,594
Americas [Member]
Schedule Of Net Sales By Major Geographic Areas [Line Items]
Net sales	411,006	359,895	292,999
Europe [Member]
Schedule Of Net Sales By Major Geographic Areas [Line Items]
Net sales	308,619	261,118	210,188
Asia Pacific [Member]
Schedule Of Net Sales By Major Geographic Areas [Line Items]
Net sales	$ 304,548	$ 252,207	$ 173,407

XML

Income Taxes (Narrative) (Details) (USD $)	3 Months Ended	12 Months Ended						1 Months Ended		3 Months Ended
	Dec. 31, 2009	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2003	Dec. 31, 2011 Expiration Period 2014 - 2021 [Member]	Dec. 31, 2011 Indefinite Expiration Period [Member]	Dec. 31, 2008 Hungary [Member]	Dec. 31, 2007 Hungary [Member]	Dec. 31, 2009 Hungary [Member]	Dec. 31, 2011 Federal [Member]	Dec. 31, 2011 One Year Expiration Period [Member]	Dec. 31, 2011 Expiration Period 2019 - 2029 [Member]
Net Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards		$ 318,600,000				$ 5,100,000	$ 313,500,000				$ 2,500,000
Operating loss carryforward, years of expiration		2023 to 2030
Federal tax credit carryforwards		5,600,000										3,200,000	2,400,000
Subsidiaries available, for income tax purposes		15
Gross deferred tax asset					91,000,000
Valuation allowance released		79,800,000
Income tax charge	21,600,000									3,200,000
Change in valuation allowance	18,400,000	0	0	(8,704,000)				8,700,000	18,300,000	9,700,000
Non-U.S. subsidiaries' undistributed earnings		432,500,000
Undistributed foreign earnings taxable amount		144,200,000
Estimated amount of tax benefits to be recognized in the next twelve months		2,200,000
Uncertain tax positions		$ 627,000	$ 440,000

XML

Subsequent Events (Details) (USD $)	Dec. 31, 2011
Subsequent Event [Line Items]
Dividend payable, date declared	January 24, 2012
Dividend payable, date to be paid	March 5, 2012
Dividend payable, date of record	February 13, 2012
Dividend Declared [Member]
Subsequent Event [Line Items]
Dividend payable, amount per share	0.14

XML

Derivative Instruments And Hedging Activities (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Derivative Instruments And Hedging Activities [Line Items]
Minimum number of countries for which entity has operations	40
Percentage of sales outside of the Americas during the period	60.00%	59.00%
Forward Contracts [Member]
Derivative Instruments And Hedging Activities [Line Items]
Period of protection against the reduction in value caused by a fluctuation, minimum (in number of years)	1
Period of protection against the reduction in value caused by a fluctuation, maximum (in number of years)	2
Percentage of derivative risk hedged	100.00%
Duration of derivative contracts entered into by the entity to hedge risk of loss	40 months or less
Duration of foreign currency forward contracts entered into by the entity to hedge risk of loss	up to 24 months
Estimated amount of reclassification of losses on derivative instruments from accumulated other comprehensive income to net sales	1,800,000
Estimated amount of reclassification of losses on derivative instruments from accumulated other comprehensive income to cost of sales	856,000
Estimated amount of reclassification of losses on derivative instruments from accumulated other comprehensive income to operating expenses	486,000
Options Held [Member]
Derivative Instruments And Hedging Activities [Line Items]
Notional amount	0	0
Other Derivatives [Member]
Derivative Instruments And Hedging Activities [Line Items]
Percentage of derivative risk hedged	90.00%
Duration of derivative contracts entered into by the entity to hedge risk of loss	120 days
Foreign currency forward contracts notional amount	53,800,000	41,300,000
EURO Currency [Member] | Forward Contracts [Member]
Derivative Instruments And Hedging Activities [Line Items]
Notional amount	61,000,000	28,300,000
British Pound Sterling [Member] | Forward Contracts [Member]
Derivative Instruments And Hedging Activities [Line Items]
Notional amount		6,000,000
Japanese Yen [Member] | Forward Contracts [Member]
Derivative Instruments And Hedging Activities [Line Items]
Notional amount	43,600,000	18,400,000
Korean Won [Member] | Forward Contracts [Member]
Derivative Instruments And Hedging Activities [Line Items]
Notional amount	3,300,000
Hungarian Forint [Member] | Forward Contracts [Member]
Derivative Instruments And Hedging Activities [Line Items]
Notional amount	28,200,000	33,400,000

XML

Income Taxes (Tables)

12 Months Ended

Dec. 31, 2011

Income Taxes [Abstract]

Components Of Income Before Income Taxes

		Years Ended December 31,
		2011		2010		2009
Domestic	$	6,488	$	31,801	$	34,953
Foreign		104,646		96,311		15,292
	$	111,134	$	128,112	$	50,245

Provision For Income Taxes Charged To Operations

		Years Ended December 31,
		2011			2010			2009
Current tax expense:
U.S. federal	$	19,381		$	14,605		$	3,117
State		1,180			779			136
Foreign		8,568			3,752			13,760
Total current		29,129			19,136			17,013
Deferred tax expense (benefit):
U.S. federal		(12,790	)		1,545			9,920
State		(234	)		(39	)		387
Foreign		957			(1,646	)		(2,864	)
Total deferred		(12,067	)		(140	)		7,443
Change in valuation allowance		0			0			8,704
Total provision	$	17,062		$	18,996		$	33,160

Deferred Tax Liabilities (Assets)

		December 31,
		2011			2010
Capitalized software	$	7,933		$	8,029
Depreciation and amortization		16,910			12,468
Unrealized exchange gain		0			68
Unrealized gain on derivative instruments		105			0
Undistributed earnings of foreign subsidiaries		9,024			9,530
Gross deferred tax liabilities		33,972			30,095
Operating loss carryforwards		(61,148	)		(60,085	)
Intangible assets		(10,800	)		(32,462	)
Vacation and other accruals		(6,432	)		(5,010	)
Inventory valuation and warranty provisions		(10,724	)		(7,211	)
Doubtful accounts and sales provisions		(1,084	)		(1,001	)
Unrealized exchange loss		(33	)		0
Deferred revenue		(1,991	)		(1,487	)
Accrued rent expenses		(132	)		(84	)
Accrued legal expenses		0			0
GSA accrual		(4,831	)		0
Unrealized loss on derivative instruments		0			(474	)
10% minority stock investment		(915	)		(899	)
Stock-based compensation		(4,640	)		(4,577	)
Research and development tax credit carryforward		(4,562	)		(2,212	)
Foreign tax credit carryforward		(1,006	)		(983	)
Other		(518	)		(622	)
Gross deferred tax assets		(108,816	)		(117,107	)
Valuation allowance		79,864			90,602
Net deferred tax liability (asset)	$	5,020		$	3,590

Income Tax Rate To The Effective Tax Rate

	Years Ended December 31,
	2011		2010		2009
U.S. federal statutory tax rate	35	%	35	%	35	%
Foreign taxes (less) than federal statutory rate	(7	)	(9	)	(6	)
Change in valuation allowance	0		0		17
Research and development tax credit	(3	)	(3	)	(4	)
Enhanced deduction for certain research and development expenses	(16	)	(10	)	0
State income taxes, net of federal tax benefit	1		1		1
Employee share-based compensation	1		0		7
Intercompany profit	3		1		15
Other	1		0		1
Effective tax rate	15	%	15	%	66	%

Unrecognized Tax Benefit

		2011			2010
Balance at beginning of period	$	14,953		$	11,062
Additions based on tax positions related to the current year		6,300			7,000
Additions for tax positions of prior years		1,908			440
Reductions as a result of settlement with taxing authorities		0			(1,141	)
Reductions as a result of the lapse of the applicable statute of limitations		(3,667	)		(2,408	)
Balance at end of period	$	19,494		$	14,953

XML

Segment Information (Schedule Of Long-Lived Assets, By Geographical Areas) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Schedule Of Long-Lived Assets By Major Geographic Areas [Line Items]
Long-lived assets	$ 190,148	$ 160,410
Americas [Member]
Schedule Of Long-Lived Assets By Major Geographic Areas [Line Items]
Long-lived assets	110,153	103,033
Europe [Member]
Schedule Of Long-Lived Assets By Major Geographic Areas [Line Items]
Long-lived assets	47,000	40,083
Asia Pacific [Member]
Schedule Of Long-Lived Assets By Major Geographic Areas [Line Items]
Long-lived assets	$ 32,995	$ 17,294

XML

Income Taxes (Provision For Income Taxes Charged To Operations) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Dec. 31, 2009	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Income Taxes [Abstract]
Current tax expense, U.S. federal		$ 19,381	$ 14,605	$ 3,117
Current tax expense, State		1,180	779	136
Current tax expense, Foreign		8,568	3,752	13,760
Current tax expense, Total current		29,129	19,136	17,013
Deferred tax expense (benefit), U.S. federal		(12,790)	1,545	9,920
Deferred tax expense (benefit), State		(234)	(39)	387
Deferred tax expense (benefit), Foreign		957	(1,646)	(2,864)
Deferred tax expense (benefit), Total deferred		(12,067)	(140)	7,443
Change in valuation allowance	(18,400)	0	0	8,704
Total provision		$ 17,062	$ 18,996	$ 33,160

XML

Acquisitions (Narrative) (Details) (USD $)	12 Months Ended							12 Months Ended
	Dec. 31, 2011 AWR Corporation [Member] years	Dec. 31, 2011 AWR Corporation [Member] Amortizable Intangible Assets [Member] years	Dec. 31, 2011 Phase Matrix Inc [Member]	Dec. 31, 2011 Phase Matrix Inc [Member] Amortizable Intangible Assets [Member] years months	Dec. 31, 2010 Privately-Held Company First [Member] years	Dec. 31, 2010 Privately-Held Company Second[Member]	Feb. 01, 2010 Privately-Held Company Second[Member] years	Dec. 31, 2010 Privately-Held Companies [Member] Customer Relationships [Member] years	Dec. 31, 2010 Privately-Held Companies [Member] Acquired Core Technology [Member] years	Dec. 31, 2010 Privately-Held Companies [Member] Non-Compete Agreements [Member] years	Dec. 31, 2010 Privately-Held Companies [Member] Trademarks [Member] years
Business Acquisition [Line Items]
Date of acquisition	June 30, 2011		May 20, 2011		December 31, 2010	February 1, 2010
Acquisition purchase price	$ 66,395,000		$ 40,680,000
Cash paid for acquired company	54,000,000		38,900,000		2,300,000		2,200,000
Term of earn-out arrangement (in number of years)	3
Potential undiscounted payments under the earn-out arrangement, range minimum	0
Potential undiscounted payments under the earn-out arrangement, range maximum	29,000,000
Estimated fair value of the earn-out arrangement	12,000,000
Useful life (in years)		5						5	5	3	3
Intangible asset useful life, minimum (in months)				9
Useful life, maximum (in years)				8
Additional cash paid for acquired company					500,000
Shares of common stock paid for acquired company			1,800,000				3,000,000
Term of payment related to the remaining balance on the purchase of acquired company (in number of years)					3		4
Net tangible assets acquired	10,718,000		5,624,000		187,000		1,100,000
Purchase price allocation, amortizable intangible assets	31,685,000		8,331,000		1,500,000		5,000,000
Purchase price allocation, goodwill	$ 34,003,000		$ 26,725,000		$ 1,100,000		$ 5,000,000

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Acquisitions (Summary Of The Allocation Of The Purchase Price Of Acquisitions) (Details) (USD $)	Dec. 31, 2011
AWR Corporation [Member]
Business Acquisition [Line Items]
Net tangible assets acquired	$ 10,718,000
Amortizable intangible assets	31,685,000
Deferred tax liability	(10,011,000)
Goodwill	34,003,000
Total	66,395,000
Phase Matrix Inc [Member]
Business Acquisition [Line Items]
Net tangible assets acquired	5,624,000
Amortizable intangible assets	8,331,000
Goodwill	26,725,000
Total	$ 40,680,000

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Segment Information (Schedule Of Operating Income, By Geographical Areas) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Schedule Of Operating Income By Major Geographic Areas [Line Items]
Operating income	$ 112,712	$ 128,313	$ 46,531
Americas [Member]
Schedule Of Operating Income By Major Geographic Areas [Line Items]
Operating income	55,140	71,339	46,816
Europe [Member]
Schedule Of Operating Income By Major Geographic Areas [Line Items]
Operating income	142,533	131,691	87,250
Asia Pacific [Member]
Schedule Of Operating Income By Major Geographic Areas [Line Items]
Operating income	114,110	83,432	45,439
Unallocated: Research And Development Expenses [Member]
Schedule Of Operating Income By Major Geographic Areas [Line Items]
Operating income	$ (199,071)	$ (158,149)	$ (132,974)

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Operations And Summary Of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2011

Operations And Summary Of Significant Accounting Policies [Abstract]

Schedule Of Allowance For Doubtful Accounts And Sales Returns

			Balance at								Balance at
			Beginning								End of
Year	Description		of Period		Provisions			Write-Offs			Period
2009	Allowance for doubtful accounts and sales returns	$	5,682	$	337		$	1,400		$	4,619
2010	Allowance for doubtful accounts and sales returns	$	4,619	$	(578	)	$	273		$	3,768
2011	Allowance for doubtful accounts and sales returns	$	3,768	$	385		$	(88	)	$	4,241

Adjustment For Excess And Obsolete Inventories

			Balance at						Balance at
			Beginning						End of
Year	Description		of Period		Provisions		Write-Offs		Period
2009	Adjustment for excess and obsolete inventories	$	4,409	$	1,492	$	1,511	$	4,390
2010	Adjustment for excess and obsolete inventories	$	4,390	$	1,785	$	2,835	$	3,340
2011	Adjustment for excess and obsolete inventories	$	3,340	$	3,554	$	2,689	$	4,205

Schedule Of Warranty Reserve

		2011			2010			2009
Balance at the beginning of the period	$	921		$	921		$	952
Accruals for warranties issued during the period		2,954			1,993			1,991
Settlements made (in cash or in kind) during the period		(2,604	)		(1,993	)		(2,022	)
Balance at the end of the period	$	1,271		$	921		$	921

Reconciliation Of The Denominators Used To Calculate Basic And Diluted EPS

	Years Ended December 31,
	2011	2010	2009
Weighted average shares outstanding-basic	119,836	116,973	116,280
Plus: Common share equivalents
Stock options, restricted stock units	1,384	1,599	759
Weighted average shares outstanding-diluted	121,220	118,572	117,039

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Property And Equipment (Schedule Of Property And Equipment) (Details) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Property And Equipment [Abstract]
Land	$ 23,730,000	$ 17,760,000
Buildings	156,317,000	142,037,000
Furniture and equipment	206,557,000	175,439,000
Property and equipment, gross	386,604,000	335,236,000
Accumulated depreciation	(196,456,000)	(174,826,000)
Property and equipment, net	190,148,000	160,410,000
Depreciation expense	$ 21,600,000	$ 21,000,000	$ 22,300,000

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Operations And Summary Of Significant Accounting Policies (Reconciliation Of Denominators Used To Calculate Basic And Diluted EPS) (Details) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Operations And Summary Of Significant Accounting Policies [Abstract]
Weighted average shares outstanding-basic	119,836	116,973	116,280
Plus: Common share equivalents Stock options, restricted stock units	1,384	1,599	759
Weighted average shares outstanding-diluted	121,220	118,572	117,039

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Commitments, Contingencies And Leases (Future Minimum Lease Payments) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011
Commitments, Contingencies And Leases [Abstract]
2012	$ 14,426
2013	10,252
2014	8,747
2015	7,707
2016	4,857
Thereafter	8,321
Total	$ 54,310

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Acquisitions (Tables)

12 Months Ended

Dec. 31, 2011

AWR Corporation [Member]

Summary Of The Allocation Of The Purchase Price Of Acquisitions

		Amount
Net tangible assets acquired	$	10,718
Amortizable intangible assets		31,685
Deferred tax liability		(10,011	)
Goodwill		34,003
Total	$	66,395

Phase Matrix Inc [Member]

Summary Of The Allocation Of The Purchase Price Of Acquisitions

		Amount
Net tangible assets acquired	$	5,624
Amortizable intangible assets		8,331
Goodwill		26,725
Total	$	40,680

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Intangibles (Schedule Of Finite-Lived Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 167,493	$ 110,964
Accumulated Amortization	(83,627)	(58,148)
Total	83,866	52,816
Capitalized Software Development Costs [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	53,086	40,481
Accumulated Amortization	(29,606)	(16,217)
Total	23,480	24,264
Acquired Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	67,918	35,634
Accumulated Amortization	(32,210)	(25,017)
Total	35,708	10,617
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	21,875	20,790
Accumulated Amortization	(7,992)	(6,312)
Total	13,883	14,478
Other [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	24,614	14,059
Accumulated Amortization	(13,819)	(10,602)
Total	$ 10,795	$ 3,457

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Stockholders' Equity And Stock-Based Compensation (Schedule Of Weighted Average Grant Date Fair Value Of Purchase Rights Granted Under Employee Stock Purchase Plan) (Details) (Employee Stock Purchase Plan [Member], USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares	940,703	1,011,765	1,257,804
Weighted average fair value	$ 6.56	$ 4.35	$ 3.83

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Stockholders' Equity And Stock-Based Compensation (Narrative) (Details) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended					12 Months Ended						12 Months Ended			12 Months Ended		12 Months Ended		12 Months Ended		12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2008	Apr. 21, 2010	Dec. 31, 2011 Stock Options [Member]	Dec. 31, 2010 Stock Options [Member]	Dec. 31, 2009 Stock Options [Member]	Dec. 31, 2004 Stock Options [Member]	Dec. 31, 1997 Stock Options [Member]	May 09, 1994 Stock Options [Member]	Dec. 31, 2011 Restricted Stock [Member]	Dec. 31, 2011 Restricted Stock [Member] Incentive Plan (2005) [Member]	May 10, 2005 Restricted Stock [Member] Incentive Plan (2005) [Member]	Dec. 31, 2011 Restricted Stock [Member] Incentive Plan (2010) [Member]	May 11, 2010 Restricted Stock [Member] Incentive Plan (2010) [Member]	Dec. 31, 2011 Employee Stock Purchase Plan [Member]	May 10, 2011 Employee Stock Purchase Plan [Member]	Dec. 31, 2011 Authorized Preferred Stock And Preferred Stock Purchase Rights Plan [Member]	Jan. 21, 2004 Authorized Preferred Stock And Preferred Stock Purchase Rights Plan [Member]	Dec. 31, 2011 Restricted Stock Units [Member]	Dec. 31, 2011 Restricted Stock Units [Member] Incentive Plan (2005) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares reserved for issuance											13,668,750			4,050,000		3,362,304				750,000
Additional number of shares reserved for issuance (1997) (in shares)										10,631,250
Additional number of shares reserved for issuance (2004) (in shares)									1,125,000
Additional number of shares reserved for issuance (2010) (in shares)																3,000,000
Award vesting period, minimum (in years)						five							three		three
Award vesting period, mid (in years)													five		five
Award vesting period, maximum (in years)						ten							ten		ten
Aggregate intrinsic value of stock options	$ 13.0	$ 12.0	$ 2.3			$ 10.0
Unrecognized stock-based compensation expense						354,500.0															75.1
Unrecognized stock-based compensation expense, shares						46,441															3,421,522
Unrecognized stock-based compensation expense, weighted average fair value						$ 11.86															$ 22.75
Weighted average period for which unrecognized stock-based compensation expense recognized						1.5															7.4
Weighted average remaining contractual life of options exercisable	2.0
Aggregate intrinsic value of options outstanding	$ 10.4
Options granted						0	0	0
Number of shares available for grant															4,964,018
Additional number of shares available for grant																		3,000,000
Percentage of the lower of the market price related to purchase of common stock																	85.00%
Maximum employee subscription rate																	15.00%
Shares of common stock reserved for future employee purchases																	3,680,138
Number of shares issued during the period																	940,703
Weighted average grant date fair value, in dollar per share																	$ 21.82
Preferred stock, shares authorized	5,000,000	5,000,000																	5,000,000
Number of preferred shares declared for each share of common stock outstanding, in shares																			1
Portion of a share of Series A Participating Preferred Stock each Right entitles its holder to purchase																			one-thousandth
Exercise price of Series A Participating Preferred Stock Rights, in dollars per share																			$ 200
Percentage of common stock before rights become exercisable																			20.00%
Multiple of original exercise price for which holder is entitled to purchase (in number of times: 2x, 3x, etc.)																			2
Redemption price of Series A Participating Preferred Stock																			$ 0.01
Expiration date						May 2005						May 2005							May 10, 2014			May 11, 2010
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock repurchased	0	2,089,098	2,165,161	6,165,063
Weighted average prices of common stock repurchased		$ 20.04	$ 15.97	$ 16.81
Authorized common stock available for repurchase	3,932,245
Common stock authorized repurchased					1,011,147
Increased aggregate number of common stock authorized to repurchase under new share repurchase program					4,500,000

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Derivative Instruments And Hedging Activities (Fair Values Of Derivative Instruments On Consolidated Balance Sheets) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Derivatives, Fair Value [Line Items]
Derivative assets	$ 4,297	$ 2,325
Derivative liabilities	(4,542)	(3,733)
Derivatives Designated As Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Derivative assets	2,690	1,594
Derivative liabilities	(3,777)	(2,677)
Derivatives Designated As Hedging Instruments [Member] | Foreign Exchange Contracts - Short-Term Forwards [Member] | Prepaid Expenses And Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative assets	2,500	1,104
Derivatives Designated As Hedging Instruments [Member] | Foreign Exchange Contracts - Short-Term Forwards [Member] | Accrued Expenses And Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative liabilities	(2,007)	(2,677)
Derivatives Designated As Hedging Instruments [Member] | Foreign Exchange Contracts - Long-Term Forwards [Member] | Other Long-Term Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative assets	190	490
Derivatives Designated As Hedging Instruments [Member] | Foreign Exchange Contracts - Long-Term Forwards [Member] | Other Long-Term Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative liabilities	(1,770)	0
Derivatives Not Designated As Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Derivative assets	1,607	731
Derivative liabilities	(765)	(1,056)
Derivatives Not Designated As Hedging Instruments [Member] | Foreign Exchange Contracts - Short-Term Forwards [Member] | Prepaid Expenses And Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative assets	1,607	731
Derivatives Not Designated As Hedging Instruments [Member] | Foreign Exchange Contracts - Short-Term Forwards [Member] | Accrued Expenses And Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative liabilities	$ (765)	$ (1,056)

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Cash, Cash Equivalents And Short-Term Investments

12 Months Ended

Dec. 31, 2011

Cash, Cash Equivalents And Short-Term Investments [Abstract]

Cash, Cash Equivalents And Short-Term Investments

Note 2 – Cash, cash equivalents and short-term investments

     The following table summarizes unrealized gains and losses related to our cash, cash equivalents and short-term investments designated as available-for-sale (in thousands):

						As of December 31, 2011
				Gross		Gross			Cumulative
		Adjusted		Unrealized		Unrealized			Translation
		Cost		Gain		Loss			Adjustment			Fair Value
Cash	$	106,431	$	0	$	0		$	0		$	106,431
Money market accounts		22,677		0		0			0			22,677
Municipal bonds		12,381		11		0			0			12,392
Corporate bonds		18,631		0		(67	)		0			18,564
U.S. treasuries and agencies		170,926		2		(9	)		0			170,919
Foreign government bonds		36,460		240		(1	)		(4,482	)		32,217
Time deposits		2,912		0		0			0			2,912
Cash, Cash equivalents and short-term
investments	$	370,418	$	253	$	(77	)	$	(4,482	)	$	366,112
						As of December 31, 2010
				Gross		Gross			Cumulative
		Adjusted		Unrealized		Unrealized			Translation
		Cost		Gain		Loss			Adjustment			Fair Value
Cash	$	86,344	$	0	$	0		$	0		$	86,344
Money market accounts		133,103		0		0			0			133,103
Municipal bonds		16,843		18		0			0			16,861
Corporate bonds		56,141		38		(69	)		0			56,110
U.S. treasuries and agencies		23,142		13		(20	)		0			23,135
Foreign government bonds		36,010		89		(32	)		(3,410	)		32,657
Time deposits		2,452		0		0			0			2,452
Cash, Cash equivalents and short-term
investments	$	354,035	$	158	$	(121	)	$	(3,410	)	$	350,662

The following table summarizes the contractual maturities of our available-for-sale debt securities (in thousands):

		As of December 31, 2011
		Adjusted Cost		Fair Value
Due in less than 1 year	$	215,817	$	213,618
Due in 1 to 5 years		25,493		23,386
Total available-for-sale debt securities	$	241,310	$	237,004
Due in less than 1 year		Adjusted Cost		Fair Value
Municipal bonds	$	12,381	$	12,392
Corporate bonds		14,435		14,392
U.S. treasuries and agencies		167,924		167,917
Foreign government bonds		18,165		16,005
Time deposits		2,912		2,912
Total available-for-sale debt securities	$	215,817	$	213,618
Due in 1 to 5 years		Adjusted Cost		Fair Value
Corporate bonds	$	4,196	$	4,172
U.S. treasuries and agencies		3,002		3,002
Foreign government bonds		18,295		16,212
Total available-for-sale debt securities	$	25,493	$	23,386

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Stockholders' Equity And Stock-Based Compensation (Schedule Of Stock Option Plans) (Details) (Stock Options [Member], USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares under option, Outstanding	2,334,448	5,567,254	6,408,850
Number of shares under option, Exercised	(932,895)	(2,291,757)	(569,445)
Number of shares under option, Cancelled	(84,337)	(941,049)	(272,151)
Number of shares under option, Granted	0	0	0
Number of shares under option, Outstanding	1,317,216	2,334,448	5,567,254
Weighted average exercise price, Outstanding	$ 17.15	$ 17.95	$ 17.31
Weighted average exercise price, Exercised	$ 29.31	$ 17.55	$ 10.27
Weighted average exercise price, Cancelled	$ 16.23	$ 20.93	$ 17.87
Weighted average exercise price, Granted	$ 0.00	$ 0.00	$ 0.00
Weighted average exercise price, Outstanding	$ 18.07	$ 17.15	$ 17.95

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Cash, Cash Equivalents And Short-Term Investments (Unrealized Gains And Losses Related To Short-Term Investments Designated As Available-For-Sale) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Cash And Cash Equivalents [Line Items]
Adjusted Cost	$ 370,418	$ 354,035
Gross Unrealized Gain	253	158
Gross Unrealized Loss	(77)	(121)
Cumulative Translation Adjustment	(4,482)	(3,410)
Fair Value	366,112	350,662
Cash [Member]
Cash And Cash Equivalents [Line Items]
Adjusted Cost	106,431	86,344
Gross Unrealized Gain	0	0
Gross Unrealized Loss	0	0
Cumulative Translation Adjustment	0	0
Fair Value	106,431	86,344
Money Market Accounts [Member]
Cash And Cash Equivalents [Line Items]
Adjusted Cost	22,677	133,103
Gross Unrealized Gain	0	0
Gross Unrealized Loss	0	0
Cumulative Translation Adjustment	0	0
Fair Value	22,677	133,103
Municipal Bonds [Member]
Cash And Cash Equivalents [Line Items]
Adjusted Cost	12,381	16,843
Gross Unrealized Gain	11	18
Gross Unrealized Loss	0	0
Cumulative Translation Adjustment	0	0
Fair Value	12,392	16,861
Corporate Bonds [Member]
Cash And Cash Equivalents [Line Items]
Adjusted Cost	18,631	56,141
Gross Unrealized Gain	0	38
Gross Unrealized Loss	(67)	(69)
Cumulative Translation Adjustment	0	0
Fair Value	18,564	56,110
U.S. Treasuries And Agencies [Member]
Cash And Cash Equivalents [Line Items]
Adjusted Cost	170,926	23,142
Gross Unrealized Gain	2	13
Gross Unrealized Loss	(9)	(20)
Cumulative Translation Adjustment	0	0
Fair Value	170,919	23,135
Foreign Government Bonds [Member]
Cash And Cash Equivalents [Line Items]
Adjusted Cost	36,460	36,010
Gross Unrealized Gain	240	89
Gross Unrealized Loss	(1)	(32)
Cumulative Translation Adjustment	(4,482)	(3,410)
Fair Value	32,217	32,657
Time Deposits [Member]
Cash And Cash Equivalents [Line Items]
Adjusted Cost	2,912	2,452
Gross Unrealized Gain	0	0
Gross Unrealized Loss	0	0
Cumulative Translation Adjustment	0	0
Fair Value	$ 2,912	$ 2,452

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Inventories (Tables)

12 Months Ended

Dec. 31, 2011

Inventories [Abstract]

Summary Of Inventories

		December 31,		December 31,
		2011		2010
Raw materials	$	56,139	$	55,218
Work-in-process		5,708		6,359
Finished goods		70,148		56,188
	$	131,995	$	117,765

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Derivative Instruments And Hedging Activities (Tables)

12 Months Ended

Dec. 31, 2011

Derivative Instruments And Hedging Activities [Abstract]

Fair Values Of Derivative Instruments On Consolidated Balance Sheets

			Asset Derivatives
	December 31, 2011				December 31, 2010
	Balance Sheet Location	Fair Value			Balance Sheet Location		Fair Value
Derivatives designated as hedging
instruments
Foreign exchange contracts - ST	Prepaid expenses and other				Prepaid expenses and other
forwards	current assets	$	2,500		current assets	$	1,104
Foreign exchange contracts - LT
forwards	Other long-term assets		190		Other long-term assets		490
Total derivatives designated as
hedging instruments		$	2,690			$	1,594
Derivatives not designated as
hedging instruments
Foreign exchange contracts - ST	Prepaid expenses and other				Prepaid expenses and other
forwards	current assets	$	1,607		current assets	$	731
Total derivatives not designated as
hedging instruments		$	1,607			$	731
Total asset derivatives		$	4,297			$	2,325
			Liability Derivatives
	December 31, 2011				December 31, 2010
	Balance Sheet Location	Fair Value			Balance Sheet Location		Fair Value
Derivatives designated as hedging
instruments
Foreign exchange contracts - ST	Accrued expenses and other				Accrued expenses and other
forwards	liabilities	$	(2,007	)	liabilities	$	(2,677	)
Foreign exchange contracts - LT
forwards	Other long-term liabilities		(1,770	)	Other long-term liabilities		0
Total derivatives designated as
hedging instruments		$	(3,777	)		$	(2,677	)
Derivatives not designated as
hedging instruments
Foreign exchange contracts - ST	Accrued expenses and other				Accrued expenses and other
forwards	liabilities	$	(765	)	liabilities	$	(1,056	)
Total derivatives not designated as
hedging instruments		$	(765	)		$	(1,056	)
Total liability derivatives		$	(4,542	)		$	(3,733	)

Fair Values Of Derivative Instruments On Consolidated Statements Of Income

December 31, 2011

				Location of Gain or		Gain or (Loss)
		Gain or (Loss)		(Loss) Reclassified		Reclassified from		Location of Gain or	Gain or (Loss)
Derivatives in Cash		Recognized in OCI on		from Accumulated	Accumulated OCI into			(Loss) Recognized in	Recognized in Income
Flow Hedging		Derivative (Effective		OCI into Income		Income (Effective		Income on Derivative	on Derivative
Relationship		Portion)		(Effective Portion)		Portion)		(Ineffective Portion)	(Ineffective Portion)
Foreign exchange
contracts - forwards and								Net foreign exchange
options	$	3,980		Net sales	$	(3,855	)	gain (loss)	$	0
Foreign exchange
contracts - forwards and								Net foreign exchange
options		(2,889	)	Cost of sales		1,378		gain (loss)		0
Foreign exchange
contracts - forwards and								Net foreign exchange
options		(1,396	)	Operating expenses		556		gain (loss)	$	0
Total	$	(305	)		$	(1,921	)		$	0

December 31, 2010
				Location of Gain or	Gain or (Loss)
	Gain or (Loss)			(Loss) Reclassified	Reclassified from		Location of Gain or		Gain or (Loss)
Derivatives in Cash	Recognized in OCI on			from Accumulated	Accumulated OCI into		(Loss) Recognized in		Recognized in Income
Flow Hedging	Derivative (Effective			OCI into Income	Income (Effective		Income on Derivative		on Derivative
Relationship	Portion)			(Effective Portion)	Portion)		(Ineffective Portion)		(Ineffective Portion)
Foreign exchange
contracts - forwards and							Net foreign exchange
options	$	(5,058	)	Net sales	$	5,852	gain (loss)		$	0
Foreign exchange
contracts - forwards and							Net foreign exchange
options		(3,166	)	Cost of sales		2,457	gain (loss)			0
Foreign exchange
contracts - forwards and							Net foreign exchange
options		(1,669	)	Operating expenses		1,237	gain (loss)		$	0
Total	$	(9,893	)		$	9,546			$	0
Derivatives not Designated as						Amount of Gain (Loss)			Amount of Gain (Loss)
Hedging Instruments		Location of Gain (Loss) Recognized in Income				Recognized in Income			Recognized in Income
						December 31, 2011			December 31, 2010
Foreign exchange contracts - forwards		Net foreign exchange gain/(loss)				$	951	$	(1,576		)
Total						$	951	$	(1,576		)

XML

Income Taxes (Components Of Income Before Income Taxes) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Income Taxes [Abstract]
Domestic	$ 6,488	$ 31,801	$ 34,953
Foreign	104,646	96,311	15,292
Income before income taxes	$ 111,134	$ 128,112	$ 50,245

XML

Cash, Cash Equivalents And Short-Term Investments (Contractual Maturities Of Short-Term Investments Designated As Available-For-Sale) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011
Cash And Cash Equivalents [Line Items]
Adjusted Cost, Due in less than 1 year	$ 215,817
Fair Value, Due in less than 1 year	213,618
Adjusted Cost, Due in 1 to 5 years	25,493
Fair Value, Due in 1 to 5 years	23,386
Adjusted Cost, Total	241,310
Fair Value, Total	237,004
Municipal Bonds [Member]
Cash And Cash Equivalents [Line Items]
Adjusted Cost, Due in less than 1 year	12,381
Fair Value, Due in less than 1 year	12,392
Corporate Bonds [Member]
Cash And Cash Equivalents [Line Items]
Adjusted Cost, Due in less than 1 year	14,435
Fair Value, Due in less than 1 year	14,392
Adjusted Cost, Due in 1 to 5 years	4,196
Fair Value, Due in 1 to 5 years	4,172
U.S. Treasuries And Agencies [Member]
Cash And Cash Equivalents [Line Items]
Adjusted Cost, Due in less than 1 year	167,924
Fair Value, Due in less than 1 year	167,917
Adjusted Cost, Due in 1 to 5 years	3,002
Fair Value, Due in 1 to 5 years	3,002
Foreign Government Bonds [Member]
Cash And Cash Equivalents [Line Items]
Adjusted Cost, Due in less than 1 year	18,165
Fair Value, Due in less than 1 year	16,005
Adjusted Cost, Due in 1 to 5 years	18,295
Fair Value, Due in 1 to 5 years	16,212
Time Deposits [Member]
Cash And Cash Equivalents [Line Items]
Adjusted Cost, Due in less than 1 year	2,912
Fair Value, Due in less than 1 year	$ 2,912

XML

Property And Equipment (Tables)

12 Months Ended

Dec. 31, 2011

Property And Equipment [Abstract]

Schedule Of Property And Equipment

		December 31,			December 31,
		2011			2010
Land	$	23,730		$	17,760
Buildings		156,317			142,037
Furniture and equipment		206,557			175,439
	$	386,604		$	335,236
Accumulated depreciation		(196,456	)		(174,826	)
	$	190,148		$	160,410

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Intangibles (Tables)

12 Months Ended

Dec. 31, 2011

Intangibles [Abstract]

Schedule Of Finite-Lived Intangible Assets

				2011							2010
		Gross					Net		Gross					Net
		Carrying		Accumulated			Carrying		Carrying		Accumulated			Carrying
		Amount		Amortization			Amount		Amount		Amortization			Amount
Capitalized software development costs	$	53,086	$	(29,606	)	$	23,480	$	40,481	$	(16,217	)	$	24,264
Acquired technology		67,918		(32,210	)		35,708		35,634		(25,017	)		10,617
Patents		21,875		(7,992	)		13,883		20,790		(6,312	)		14,478
Other		24,614		(13,819	)		10,795		14,059		(10,602	)		3,457
	$	167,493	$	(83,627	)	$	83,866	$	110,964	$	(58,148	)	$	52,816

Estimated Future Amortization Expense Related To Intangible Assets

		Amount
		(in thousands)
2012	$	26,635
2013		20,192
2014		13,953
2015		9,523
2016		5,172
Thereafter		8,391
	$	83,866

XML

Operations And Summary Of Significant Accounting Policies

12 Months Ended

Dec. 31, 2011

Operations And Summary Of Significant Accounting Policies [Abstract]

Operations And Summary Of Significant Accounting Policies

Note 1 – Operations and summary of significant accounting policies

National Instruments Corporation is a Delaware corporation. We provide flexible application software and modular, multifunction hardware that users combine with industry-standard computers, networks and third party devices to create measurement, automation and embedded systems, which we also refer to as "virtual instruments." Our approach gives customers the ability to quickly and cost-effectively design, prototype and deploy unique custom-defined solutions for their design, control and test application needs. We offer hundreds of products used to create virtual instrumentation systems for general, commercial, industrial and scientific applications. Our products may be used in different environments, and consequently, specific application of our products is determined by the customer and generally is not known to us. We approach all markets with essentially the same products, which are used in a variety of applications from research and development to production testing, monitoring and industrial control. The following industries and applications are served by us worldwide: advanced research, automotive, commercial aerospace, computers and electronics, continuous process manufacturing, education, government/defense, medical research/pharmaceutical, power/energy, semiconductors, automated test equipment, telecommunications and others. These financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America.

Principles of consolidation

The Consolidated Financial Statements include the accounts of National Instruments Corporation and its subsidiaries. All significant intercompany accounts and transactions have been eliminated.

Use of estimates

The preparation of our financial statements in conformity with U.S. generally accepted accounting principles requires us to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues, expenses and related disclosures of contingent assets and liabilities. We base our estimates on past experience and other assumptions that we believe are reasonable under the circumstances, and we evaluate these estimates on an ongoing basis. Our critical accounting policies are those that affect our financial statements materially and involve difficult, subjective or complex judgments by management. Although these estimates are based on management's best knowledge of current events and actions that may impact the company in the future, actual results may be materially different from the estimates.

Cash and cash equivalents

Cash and cash equivalents include cash and highly liquid investments with maturities of three months or less at the date of acquisition.

Short-Term Investments

We value our available-for-sale short term investments based on pricing from third party pricing vendors, who may use quoted prices in active markets for identical assets (Level 1 inputs) or inputs other than quoted prices that are observable either directly or indirectly (Level 2 inputs) in determining fair value. We classify all of our fixed income available-for-sale securities as having Level 2 inputs. The valuation techniques used to measure the fair value of our financial instruments having Level 2 inputs were derived from non-binding market consensus prices that are corroborated by observable market data, quoted market prices for similar instruments, or pricing models, such as discounted cash flow techniques. We believe all of these sources reflect the credit risk associated with each of our available for sale short term investments. Short-term investments available-for-sale consists of debt securities issued by states of the U.S. and political subdivisions of the U.S., corporate debt securities and debt securities issued by U.S. government corporations and agencies as well as debt securities issued by foreign governments. All short-term investments available-for-sale have contractual maturities of less than 24 months.

Our investments are classified as available-for-sale and accordingly are reported at fair value, with unrealized gains and losses reported as other comprehensive income, a component of stockholders' equity. Unrealized losses are charged against income when a decline in fair value is determined to be other than temporary. Investments with maturities beyond one year are classified as short-term based on their highly liquid nature and because such marketable securities represent the investment of cash that is available for current operations. The fair value of our short-term investments in debt securities at December 31, 2011 and December 31, 2010 was $224 million and $131 million, respectively. The increase was due to the net purchase of $  91million of short-term investments which was done to continue the diversification our holdings from money market accounts to debt securities and to take advantage of higher yields associated with longer maturity debt securities. We have $32 million U.S. dollar equivalent of German government sovereign debt that is denominated in Euro. Our German government sovereign debt holdings have a maximum maturity of 18 months and carry Aaa/AAA ratings.

We follow the guidance provided by FASB ASC 320 to assess whether our investments with unrealized loss positions are other than temporarily impaired. Realized gains and losses and declines in value judged to be other than temporary are determined based on the specific identification method and are reported in other income (expense), net, in our Consolidated Statements of Income. We did not identify or record any other-than-temporary impairments during 2011, 2010 and 2009.

Accounts Receivable, net

Accounts receivable are recorded net of allowances for sales returns of $1.6 million and $1.7 million at December 31, 2011 and 2010, respectively, and net of allowances for doubtful accounts of $2.6 million and $2.1 million at December 31, 2011 and 2010, respectively. A provision for estimated sales returns is made by reducing recorded revenue based on historical experience. We analyze historical returns, current economic trends and changes in customer demand of our products when evaluating the adequacy of our sales returns allowance. Our allowance for doubtful accounts is based on historical experience. We analyze historical bad debts, customer concentrations, customer creditworthiness and current economic trends when evaluating the adequacy of our allowance for doubtful accounts.

			Balance at								Balance at
			Beginning								End of
Year	Description		of Period		Provisions			Write-Offs			Period
2009	Allowance for doubtful accounts and sales returns	$	5,682	$	337		$	1,400		$	4,619
2010	Allowance for doubtful accounts and sales returns	$	4,619	$	(578	)	$	273		$	3,768
2011	Allowance for doubtful accounts and sales returns	$	3,768	$	385		$	(88	)	$	4,241

Inventories, net

Inventories are stated at the lower-of-cost or market. Cost is determined using standard costs, which approximate the first-in first-out ("FIFO") method. Cost includes the acquisition cost of purchased components, parts and subassemblies, in-bound freight costs, labor and overhead. Market is replacement cost with respect to raw materials and is net realizable value with respect to work in process and finished goods.

Inventory is shown net of adjustment for excess and obsolete inventories of $4.2 million, $3.3 million and $4.4 million at December 31, 2011, 2010 and 2009, respectively.

			Balance at						Balance at
			Beginning						End of
Year	Description		of Period		Provisions		Write-Offs		Period
2009	Adjustment for excess and obsolete inventories	$	4,409	$	1,492	$	1,511	$	4,390
2010	Adjustment for excess and obsolete inventories	$	4,390	$	1,785	$	2,835	$	3,340
2011	Adjustment for excess and obsolete inventories	$	3,340	$	3,554	$	2,689	$	4,205

Property and equipment, net

Property and equipment are recorded at cost. Depreciation is computed using the straight-line method over the estimated useful lives of the assets, which range from twenty to forty years for buildings, three to seven years for purchased internal use software and for equipment which are each included in furniture and equipment. Leasehold improvements are depreciated over the shorter of the life of the lease or the asset.

Intangible assets, net

We capitalize costs related to the development and acquisition of certain software products. Capitalization of costs begins when technological feasibility has been established and ends when the product is available for general release to customers. Technological feasibility for our products is established when the product is available for beta release. Amortization is computed on an individual product basis for those products available for market and is recognized based on the product's estimated economic life, generally three years.

We use the services of outside counsel to search for, document, and apply for patents. Those costs, along with any filing or application fees, are capitalized. Costs related to patents which are abandoned are written off. Once a patent is granted, the patent costs are amortized ratably over the legal life of the patent, generally ten to seventeen years.

At each balance sheet date, the unamortized costs for all intangible assets are reviewed by management and reduced to net realizable value when necessary.

Goodwill

The excess purchase price over the fair value of assets acquired is recorded as goodwill. As we have one operating segment, we allocate goodwill to one reporting unit for goodwill impairment testing. Goodwill is tested for impairment on an annual basis, and between annual tests if indicators of potential impairment exist, using a fair-value-based approach based on the market capitalization of the reporting unit. Our annual impairment test was performed as of February 28, 2011. No impairment of goodwill was identified during 2011 and 2010. Goodwill is deductible for tax purposes in certain jurisdictions.

Concentrations of credit risk

We maintain cash and cash equivalents with various financial institutions located in many countries throughout the world. At December 31, 2011, $106.4 million or 75% of our cash and cash equivalents was held in cash in various operating accounts with financial institutions throughout the world, $22.7 million or 16% was held in money market accounts and $13.5 million or 9% was held in U.S. Treasuries. The most significant of our operating accounts was our domestic operating account which held approximately $8.1 million or 6% of our total cash and cash equivalents at a bank that carried A+/A2/AA- ratings at December 31, 2011. From a geographic standpoint, approximately $37.1 million or 26% was held in various domestic accounts with financial institutions and $105.5 million or 74% was held in various accounts outside of the U.S. with financial institutions. At December 31, 2011, our short-term investments consist of $32.2 million or 14% of foreign government bonds, $157.4 million or 70% of U.S. treasuries and agencies, $12.4 million or 6% of municipal bonds, $18.6 million or 8% of corporate bonds and $2.9 million or 1% in time deposits.

The goal of our investment policy is to manage our investment portfolio to preserve principal and liquidity while maximizing the return on our investment portfolio through the full investment of available funds. We place our cash investments in instruments that meet credit quality standards, as specified in our corporate investment policy guidelines. These guidelines also limit the amount of credit exposure to any one issue, issuer or type of instrument. Our cash equivalents and short-term investments carried ratings from the major credit rating agencies that were in accordance with our corporate investment policy. Our investment policy allows investments in the following; government and federal agency obligations, repurchase agreements ("Repos"), certificates of deposit and time deposits, corporate obligations, medium term notes and deposit notes, commercial paper including asset-backed commercial paper ("ABCP"), puttable bonds, general obligation and revenue bonds, money market funds, taxable commercial paper, corporate notes/bonds, municipal notes, municipal obligations, variable rate demand notes and tax exempt commercial paper. All such instruments must carry minimum ratings of A1/P1/F1, MIG1/VMIG1/SP1 and A2/A/A, as applicable, all of which are considered "investment grade". Our investment policy for marketable securities requires that all securities mature in three years or less, with a weighted average maturity of no longer than 18 months with at least 10% maturing in 90 days or less. (See Note 2 – Cash, cash equivalents, short-term and long-term investments in Notes to Consolidated Financial Statements for further discussion and analysis of our investments.).

Concentration of credit risk with respect to trade accounts receivable is limited due to our large number of customers and their dispersion across many countries and industries. The amount of sales to any individual customer did not exceed 4% of revenue for the periods presented. The largest trade account receivable from any individual customer at December 31, 2011 was approximately $4.9 million.

Key supplier risk

Our manufacturing processes use large volumes of high-quality components and subassemblies supplied by outside sources. Several of these components are available through sole or limited sources. Supply shortages or quality problems in connection with some of these key components could require us to procure components from replacement suppliers, which would cause significant delays in fulfillment of orders and likely result in additional costs. In order to manage this risk, we maintain safety stock of some of these single sourced components and subassemblies and perform regular assessments of suppliers performance, grading key suppliers in critical areas such as quality and "on-time" delivery.

Revenue recognition

We derive revenue primarily from the sale/licensing of integrated hardware and software solutions. Independent sales of application software licenses include post contract support services. In addition, training services are sold separately and revenue is recognized as the services are performed. The products and services are generally sold under standardized licensing and sales arrangements with payment terms ranging from net 30 days in the United States to net 30 days and up to net 90 days in some international markets. Approximately 86% of our product/license sales include both hardware and software in the customer arrangement, with a small percentage of sales including other services. We offer rights of return and standard warranties for product defects related to our products. The rights of return are generally for a period of up to 30 days after the delivery date. Our standard warranties cover periods ranging from 90 days to three years. We do not generally enter into contracts requiring product acceptance from the customer.

Revenue is recognized in accordance with the provisions of FASB ASC 985, when persuasive evidence of an arrangement exists, delivery has occurred, the fee is fixed or determinable, and collectability is probable. We enter into certain arrangements where we are obligated to deliver multiple products and/or services ("multiple elements"). In these transactions, we allocate the total revenue among the elements based on vendor specific objective evidence ("VSOE") of fair value as determined by the sales price of each element when sold separately.

When VSOE of fair value is not available for a delivered element but is available for the undelivered element of a multiple element arrangement, sales revenue is generally recognized on the date the product is shipped, using the residual method under FASB ASC 985, with a portion of revenue recorded as deferred (unearned) due to applicable undelivered elements. Undelivered elements for our multiple element arrangements with a customer are generally restricted to post contract support and training and education. The amount of revenue allocated to these undelivered elements is based on the VSOE of fair value for those undelivered elements. Deferred revenue due to undelivered elements is recognized ratably over the service period or when the service is completed. When VSOE of fair value is not available for the undelivered element of a multiple element arrangement, sales revenue for the entire sales contract value is generally recognized ratably over the service period of the undelivered element, generally 12 months or when the service is completed in accordance with the subscription method. Deferred revenue at December 31, 2011 and 2010 was $90.1 million and $71.7 million, respectively.

The application of FASB ASC 985 requires judgment, including whether a software arrangement includes multiple elements, and if so, whether VSOE of fair value exists for those elements. Changes to the elements in a software arrangement, the ability to identify VSOE for those elements, the fair value of the respective elements, and changes to a product's estimated life cycle could materially impact the amount of our earned and unearned revenue. Judgment is also required to assess whether future releases of certain software represent new products or upgrades and enhancements to existing products.

On January 1, 2011, we prospectively adopted accounting rules that changed the criteria for separating consideration in multiple-deliverable arrangements. The new rules changed the application of the residual method of allocation and require that arrangement consideration be allocated at the inception of an arrangement to all deliverables using the relative selling price method. The relative selling price method allocates any discount in the arrangement proportionally to each deliverable on the basis of each deliverable's selling price. The selling price used for each deliverable will be based on VSOE if available, third–party evidence if vendor-specific objective evidence is not available, or estimated selling price if neither vendor-specific objective evidence nor third-party evidence is available. The adoption of the amended revenue recognition rules did not change the units of accounting for our revenue transactions. It also did not significantly change how we allocated the arrangement consideration to the various units of accounting or the timing of revenue. The impact of our adoption was not material to our consolidated financial statements for the year ended December 31, 2011.

Product revenue

Our product revenue is generated predominantly from the sales of measurement and automation products. Our products consist of application software and hardware components together with related driver software.

Software maintenance revenue

Software maintenance revenue is post contract customer support that provides the customer with unspecified upgrades/updates and technical support.

Shipping and handling costs

Our shipping and handling costs charged to customers are included in net sales, and the associated expense is recorded in cost of sales for all periods presented.

Warranty reserve

We offer a one-year limited warranty on most hardware products and extended two or three-year warranties on a subset of our hardware products, which is included in the sales price of many of our products. Provision is made for estimated future warranty costs at the time of the sale for the estimated costs that may be incurred under the basic limited warranty. Our estimate is based on historical experience and product sales.

The warranty reserve for the years ended December 31, 2011, 2010 and 2009, respectively, was as follows (in thousands):

		2011			2010			2009
Balance at the beginning of the period	$	921		$	921		$	952
Accruals for warranties issued during the period		2,954			1,993			1,991
Settlements made (in cash or in kind) during the period		(2,604	)		(1,993	)		(2,022	)
Balance at the end of the period	$	1,271		$	921		$	921

Loss contingencies

We accrue for probable losses from contingencies including legal defense costs, on an undiscounted basis, when such costs are considered probable of being incurred and are reasonably estimable. We periodically evaluate available information, both internal and external, relative to such contingencies and adjust this accrual as necessary.

Advertising expense

We expense costs of advertising as incurred. Advertising expense for the years ended December 31, 2011, 2010 and 2009 was $14.7 million, $13.2 million and $13.6 million, respectively.

Foreign currency translation

The functional currency for our international sales operations is the applicable local currency. The assets and liabilities of these operations are translated at the rate of exchange in effect on the balance sheet date and sales and expenses are translated at average rates. The resulting gains or losses from translation are included in a separate component of other comprehensive income. Gains and losses resulting from re-measuring monetary asset and liability accounts that are denominated in a currency other than a subsidiary's functional currency are included in net foreign exchange gain (loss) and are included in net income.

Foreign currency hedging instruments

All of our derivative instruments are recognized on the balance sheet at their fair value. We currently use foreign currency forward and purchased option contracts to hedge our exposure to material foreign currency denominated receivables and forecasted foreign currency cash flows.

On the date the derivative contract is entered into, we designate the derivative as a hedge of the variability of foreign currency cash flows to be received or paid ("cash flow" hedge) or as a hedge of our foreign denominated net receivable positions ("other derivatives"). Changes in the fair value of derivatives that are designated and qualify as cash flow hedges and that are deemed to be highly effective are recorded in other comprehensive income. These amounts are subsequently reclassified into earnings in the period during which the hedged transaction is realized. The gain or loss on the other derivatives as well as the offsetting gain or loss on the hedged item attributable to the hedged risk is recognized in current earnings under the line item "Net foreign exchange gain (loss)". We do not enter into derivative contracts for speculative purposes.

We formally document all relationships between hedging instruments and hedged items, as well as our risk-management objective and strategy for undertaking various hedge transactions at the inception of the hedge. This process includes linking all derivatives that are designated as cash flow hedges to specific forecasted transactions. We also formally assess, both at the hedge's inception and on an ongoing basis, whether the hedging instruments are highly effective in offsetting changes in cash flows of hedged items.

We prospectively discontinue hedge accounting if (1) it is determined that the derivative is no longer highly effective in offsetting changes in the fair value of a hedged item (forecasted transactions); or (2) the derivative is de-designated as a hedge instrument, because it is unlikely that a forecasted transaction will occur. When hedge accounting is discontinued, the derivative is sold and the resulting gains and losses are recognized immediately in earnings.

Income taxes

We account for income taxes under the asset and liability method. Deferred tax assets and liabilities are recognized for the expected tax consequences of temporary differences between the tax basis of assets and liabilities and their reported amounts. Valuation allowances are established when necessary to reduce deferred tax assets to amounts which are more likely than not to be realized. Judgment is required in assessing the future tax consequences of events that have been recognized in our financial statements or tax returns. Variations in the actual outcome of these future tax consequences could materially impact our financial position or our results of operations. In estimating future tax consequences, all expected future events are considered other than enactments of changes in tax laws or rates. We account for uncertainty in income taxes recognized in our financial statements using prescribed recognition thresholds and measurement attributes for financial statement disclosure of tax positions taken or expected to be taken on our tax returns. Our continuing policy is to recognize interest and penalties related to income tax matters in income tax expense.

Earnings per share

Basic earnings per share ("EPS") is computed by dividing net income by the weighted average number of common shares outstanding during each period. Diluted EPS is computed by dividing net income by the weighted average number of common shares and common share equivalents outstanding (if dilutive) during each period. The number of common share equivalents, which include stock options and restricted stock units, is computed using the treasury stock method.

The reconciliation of the denominators used to calculate basic EPS and diluted EPS for the years ended December 31, 2011, 2010 and 2009, respectively, are as follows (in thousands):

	Years Ended December 31,
	2011	2010	2009
Weighted average shares outstanding-basic	119,836	116,973	116,280
Plus: Common share equivalents
Stock options, restricted stock units	1,384	1,599	759
Weighted average shares outstanding-diluted	121,220	118,572	117,039

Stock awards to acquire 477,019, 322,896 and 4,067,964 shares for the years ended December 31, 2011, 2010 and 2009, respectively, were excluded in the computations of diluted EPS because the effect of including the stock options would have been anti-dilutive.

On January 21, 2011, our Board of Directors declared a 3 for 2 stock split which was effected as a stock dividend, and paid on February 21, 2011, to stockholders of record on February 4, 2011. All per share data and numbers of common shares, where appropriate, have been retroactively adjusted to reflect the stock split.

Stock-based compensation

Effective January 1, 2006, we adopted FASB ASC 718, Compensation – Stock Compensation (FASB ASC 718), using the modified-prospective-transition method. Under this method, prior periods are not restated. Under this transition method, stock compensation cost recognized beginning January 1, 2006 includes: (a) compensation cost for all share-based payments granted prior to, but not yet vested as of January 1, 2006, based on the grant date fair value estimated in accordance with the original provisions of FASB ASC 718, and (b) compensation cost for all share-based payments granted on or subsequent to January 1, 2006, based on the grant-date fair value estimated in accordance with the provisions of FASB ASC 718.

Comprehensive income

Our comprehensive income is comprised of net income, foreign currency translation and unrealized gains and losses on forward and option contracts and securities available-for-sale. Comprehensive income for 2011, 2010 and 2009 was $91.3 million, $94.9 million and $20.1 million, respectively.

Recently Issued Accounting Pronouncements

In October 2009, the FASB updated FASB ASC 605, Revenue Recognition (FASB ASC 605) that amended the criteria for separating consideration in multiple-deliverable arrangements. The amendments establish a selling price hierarchy for determining the selling price of a deliverable. The selling price used for each deliverable will be based on vendor-specific objective evidence if available, third–party evidence if vendor-specific objective evidence is not available, or estimated selling price if neither vendor-specific objective evidence nor third-party evidence is available. The amendments will change the application of the residual method of allocation and require that arrangement consideration be allocated at the inception of the arrangement to all deliverables using the relative selling price method. The relative selling price method allocates any discount in the arrangement proportionally to each deliverable on the basis of each deliverable's selling price. This update was effective prospectively for revenue arrangements entered into or materially modified in fiscal years beginning on or after June 15, 2010. On January 1, 2011, we adopted the accounting update as required on a prospective basis. The adoption of the amended revenue recognition rules did not change the units of accounting for our revenue transactions. It also did not significantly change how we allocated the arrangement consideration to the various units of accounting or the timing of revenue. The impact of our adoption was not material to our consolidated financial statements for the year ended December 31, 2011. We cannot reasonably estimate the effect of adopting these standards on future financial periods as the impact will vary depending on the nature and volume of new or materially modified sales arrangements in any given period. In addition, as our, or our competitors', pricing practices and strategies evolve, we may modify our pricing practices in the future. This may result in a different allocation of revenue to the deliverables in the multiple element arrangements from the current fiscal quarter, which may change the pattern and timing of revenue recognition for these elements, but will not change the total revenue recognized for the arrangement.

In January 2010, the FASB updated FASB ASC 820, Fair Value Measurements and Disclosures (FASB ASC 820) that requires additional disclosures and clarifies existing disclosures regarding fair value measurements. The additional disclosures include (i) transfers in and out of Levels 1 and 2 and (ii) activity in Level 3 fair value measurements. The update provides amendments that clarify existing disclosures on level of disaggregation and disclosures about inputs and valuation techniques. This update is effective for interim and annual reporting periods beginning after December 15, 2009, except for the disclosures about purchases, sales, issuances, and settlements in the roll forward of activity in Level 3 fair value measurements. These disclosures are effective for fiscal years beginning after December 15, 2010, and for interim periods within those fiscal years. We adopted the update on January 1, 2010 as required and subsequently adopted on January 1, 2011, the update surrounding disclosures on Level 3 fair value measurements and concluded it did not have a material impact on our consolidated financial position or results of operations. In May 2011, the FASB updated FASB ASC 820 that resulted in common fair value measurement and disclosure requirements in U.S. GAAP and International Financial Reporting Standards (IFRSs). Some of the amendments clarify the FASB's intent about the application of existing fair value measurement requirements. Other amendments change a particular principle or requirement for measuring fair value or for disclosing information about fair value measurements. The amendments are to be applied prospectively and are effective during interim and annual periods beginning after December 15, 2011. We are currently evaluating the requirements of this update and have not yet determined the impact on our consolidated financial statements.

In June 2011, the FASB updated FASB ASC 220, Comprehensive Income (FASB ASC 220) that gives an entity the option to present the total of comprehensive income, the components of net income, and the components of other comprehensive income either in a single continuous statement of comprehensive income or in two separate but consecutive statements. In both choices, an entity is required to present each component of net income along with total net income, each component of other comprehensive income along with a total for other comprehensive income, and a total amount for comprehensive income. The update does not change the items that must be reported in other comprehensive income or when an item of other comprehensive income must be reclassified to net income. The update does not change the option for an entity to present components of other comprehensive income either net of related tax effects or before related tax effects, with one amount shown for the aggregate income tax expense or benefit related to the total of other comprehensive income items. The update does not affect how earnings per share is calculated or presented. The update should be applied retrospectively and is effective for fiscal years, and interim periods within those years, beginning after December 15, 2011. We are currently evaluating the requirements of this update and have not yet determined the impact on our consolidated financial statements.

In September 2011, the FASB updated FASB ASC 350, Goodwill and Other (FASB ASC 350) that gives an entity the option to first assess qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If, after assessing the totality of events or circumstances, an entity determines it is not more likely than not that the fair value of a reporting unit is less than its carrying amount, then performing the two-step impairment test is unnecessary. The amendments are effective for annual and interim goodwill impairment test performed for fiscal years beginning after December 15, 2011. We are currently evaluating the requirements of this update and have not yet determined the impact on our consolidated financial statements.

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Goodwill (Tables)

12 Months Ended

Dec. 31, 2011

Goodwill [Abstract]

Schedule Of Goodwill

		Amount
		(in thousands)
Balance as of December 31, 2009	$	64,779
Acquisitions/purchase accounting adjustments		6,061
Divestitures		0
Foreign currency translation impact		(562	)
Balance as of December 31, 2010	$	70,278
Acquisitions/purchase accounting adjustments		60,728
Divestitures		0
Foreign currency translation impact		(259	)
Balance as of December 31, 2011	$	130,747

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Operations And Summary Of Significant Accounting Policies (Adjustment For Excess And Obsolete Inventories) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Operations And Summary Of Significant Accounting Policies [Abstract]
Balance at Beginning of Period	$ 3,340	$ 4,390	$ 4,409
Provisions	3,554	1,785	1,492
Write-Offs	2,689	2,835	1,511
Balance at End of Period	$ 4,205	$ 3,340	$ 4,390

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Intangibles (Estimated Future Amortization Expense Related To Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011
Intangibles [Abstract]
2012	$ 26,635
2013	20,192
2014	13,953
2015	9,523
2016	5,172
Thereafter	8,391
Total	$ 83,866

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Segment Information (Schedule Of Interest Income, By Geographical Areas) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Schedule Of Interest Income By Major Geographic Areas [Line Items]
Interest income	$ 1,319	$ 1,391	$ 1,629
Americas [Member]
Schedule Of Interest Income By Major Geographic Areas [Line Items]
Interest income	408	588	803
Europe [Member]
Schedule Of Interest Income By Major Geographic Areas [Line Items]
Interest income	771	699	727
Asia Pacific [Member]
Schedule Of Interest Income By Major Geographic Areas [Line Items]
Interest income	$ 140	$ 104	$ 99

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Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Assets
Cash and cash equivalents	$ 142,608	$ 219,447
Short-term investments	223,504	131,215
Accounts receivable, net	157,056	127,214
Inventories, net	131,995	117,765
Prepaid expenses and other current assets	38,082	36,239
Deferred income taxes, net	26,304	18,838
Total current assets	719,549	650,718
Property and equipment, net	190,148	160,410
Goodwill	130,747	70,278
Intangible assets, net	83,866	52,816
Other long-term assets	29,984	25,460
Total assets	1,154,294	959,682
Current liabilities:
Accounts payable	41,111	33,544
Accrued compensation	29,616	27,734
Deferred revenue	90,074	71,650
Accrued expenses and other liabilities	37,612	16,538
Other taxes payable	24,507	16,846
Total current liabilities	222,920	166,312
Deferred income taxes	43,186	29,477
Liability for uncertain tax positions	19,494	14,953
Other long-term liabilities	16,683	4,395
Total liabilities	302,283	215,137
Commitments and contingencies
Stockholders' equity:
Preferred stock: par value $0.01; 5,000,000 shares authorized; none issued and outstanding	0	0
Common stock: par value $0.01; 180,000,000 shares authorized; 120,677,143 and 117,904,975 shares issued and outstanding, respectively	1,207	1,179
Additional paid-in capital	471,830	407,713
Retained earnings	382,474	336,363
Accumulated other comprehensive (loss)	(3,500)	(710)
Total stockholders' equity	852,011	744,545
Total liabilities and stockholders' equity	$ 1,154,294	$ 959,682

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Fair Value Measurements (Assets And Liabilities Measured On Recurring Basis) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contractual maturities of short-term investments	less than 24 months
Number of items measured at fair value on a nonrecurring basis	0	0
Estimate Of Fair Value, Fair Value Disclosure [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Assets	263,978	266,643
Total Liabilities	(4,542)	(3,733)
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Assets	25,589	135,555
Total Liabilities	0	0
Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Assets	238,389	131,088
Total Liabilities	(4,542)	(3,733)
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Assets	0	0
Total Liabilities	0	0
Money Market Accounts [Member] | Estimate Of Fair Value, Fair Value Disclosure [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money Market Funds	22,677	133,103
Money Market Accounts [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money Market Funds	22,677	133,103
Money Market Accounts [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money Market Funds	0	0
Money Market Accounts [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money Market Funds	0	0
Municipal Bonds [Member] | Estimate Of Fair Value, Fair Value Disclosure [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Assets	12,392	16,861
Municipal Bonds [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Assets	0	0
Municipal Bonds [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Assets	12,392	16,861
Municipal Bonds [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Assets	0	0
Corporate Bonds [Member] | Estimate Of Fair Value, Fair Value Disclosure [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Assets	18,564	56,110
Corporate Bonds [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Assets	0	0
Corporate Bonds [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Assets	18,564	56,110
Corporate Bonds [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Assets	0	0
U.S. Treasuries And Agencies [Member] | Estimate Of Fair Value, Fair Value Disclosure [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
U.S. Treasuries and Agencies	13,500
Total Assets	157,419	23,135
U.S. Treasuries And Agencies [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Assets	0	0
U.S. Treasuries And Agencies [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
U.S. Treasuries and Agencies	13,500
Total Assets	157,419	23,135
U.S. Treasuries And Agencies [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Assets	0	0
Foreign Government Bonds [Member] | Estimate Of Fair Value, Fair Value Disclosure [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Assets	32,217	32,657
Foreign Government Bonds [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Assets	0	0
Foreign Government Bonds [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Assets	32,217	32,657
Foreign Government Bonds [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Assets	0	0
Time Deposits [Member] | Estimate Of Fair Value, Fair Value Disclosure [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Assets	2,912	2,452
Time Deposits [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Assets	2,912	2,452
Time Deposits [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Assets	0	0
Time Deposits [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Assets	0	0
Derivative Assets [Member] | Estimate Of Fair Value, Fair Value Disclosure [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Assets	4,297	2,325
Derivative Assets [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Assets	0	0
Derivative Assets [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Assets	4,297	2,325
Derivative Assets [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Assets	0	0
Derivative Liabilities [Member] | Estimate Of Fair Value, Fair Value Disclosure [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Liabilities	(4,542)	(3,733)
Derivative Liabilities [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Liabilities	0	0
Derivative Liabilities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Liabilities	(4,542)	(3,733)
Derivative Liabilities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Liabilities	0	0

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Consolidated Statements Of Stockholders' Equity (USD $) In Thousands, except Share data	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income/(Loss) [Member]	Total
Beginning balance at Dec. 31, 2008	$ 1,158	$ 299,966	$ 352,831	$ 10,483	$ 664,438
Beginning balance, shares at Dec. 31, 2008	115,789,594
Net income			17,085		17,085
Foreign currency translation adjustment, net of tax				927	927
Unrealized gain/loss on securities available-for-sale, net of taxes				563	563
Unrealized gain/loss on derivative instruments, net of taxes				1,572	1,572
Total comprehensive income					20,147
Issuance of common stock under employee plans, including tax benefits	24	21,648			21,672
Issuance of common stock under employee plans, including tax benefits, shares	2,427,378
Stock-based compensation		20,574			20,574
Repurchase and retirement of common stock	(21)	(5,611)	(28,953)		(34,585)
Repurchase and retirement of common stock, shares	(2,165,161)				2,165,161
Dividends paid			(37,308)		(37,308)
Disqualified dispositions		(518)			(518)
Ending balance at Dec. 31, 2009	1,161	336,059	303,655	13,545	654,420
Ending balance, shares at Dec. 31, 2009	116,051,811
Net income			109,116		109,116
Foreign currency translation adjustment, net of tax				(5,248)	(5,248)
Unrealized gain/loss on securities available-for-sale, net of taxes				653	653
Unrealized gain/loss on derivative instruments, net of taxes				(9,660)	(9,660)
Total comprehensive income					94,861
Issuance of common stock under employee plans, including tax benefits	38	51,814			51,852
Issuance of common stock under employee plans, including tax benefits, shares	3,788,994
Stock-based compensation		18,897			18,897
Repurchase and retirement of common stock	(21)	(6,051)	(35,790)		(41,862)
Repurchase and retirement of common stock, shares	(2,089,098)				2,089,098
Business acquisition	1	2,998			2,999
Business acquisition, shares	153,268
Dividends paid			(40,618)		(40,618)
Disqualified dispositions		3,996			3,996
Ending balance at Dec. 31, 2010	1,179	407,713	336,363	(710)	744,545
Ending balance, shares at Dec. 31, 2010	117,904,975				117,904,975
Net income			94,072		94,072
Foreign currency translation adjustment, net of tax				(1,046)	(1,046)
Unrealized gain/loss on securities available-for-sale, net of taxes				(860)	(860)
Unrealized gain/loss on derivative instruments, net of taxes				(884)	(884)
Total comprehensive income					91,282
Issuance of common stock under employee plans, including tax benefits	27	32,878			32,905
Issuance of common stock under employee plans, including tax benefits, shares	2,715,253
Stock-based compensation		23,106			23,106
Repurchase and retirement of common stock, shares					0
Business acquisition	1	1,813			1,814
Business acquisition, shares	56,915
Dividends paid			(47,961)		(47,961)
Disqualified dispositions		6,320			6,320
Ending balance at Dec. 31, 2011	$ 1,207	$ 471,830	$ 382,474	$ (3,500)	$ 852,011
Ending balance, shares at Dec. 31, 2011	120,677,143				120,677,143

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Income Taxes (Income Tax Rate To The Effective Tax Rate) (Details)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Income Taxes [Abstract]
U.S. federal statutory tax rate	35.00%	35.00%	35.00%
Foreign taxes (less) than federal statutory rate	(7.00%)	(9.00%)	(6.00%)
Change in valuation allowance	0.00%	0.00%	17.00%
Research and development tax credit	(3.00%)	(3.00%)	(4.00%)
Enhanced deduction for certain research and development expenses	(16.00%)	(10.00%)	0.00%
State income taxes, net of federal tax benefit	1.00%	1.00%	1.00%
Employee share-based compensation	1.00%	0.00%	7.00%
Intercompany profit	3.00%	1.00%	15.00%
Other	1.00%	0.00%	1.00%
Effective tax rate	15.00%	15.00%	66.00%

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Segment Information (Tables)

12 Months Ended

Dec. 31, 2011

Segment Information [Abstract]

Schedule Of Net Sales, By Geographical Areas

		Years Ended December 31,
		2011			2010		2009
Net sales:
Americas	$	411,006	$	359,895		$	292,999
Europe		308,619			261,118		210,188
Asia Pacific		304,548			252,207		173,407
	$	1,024,173	$	873,220		$	676,594

Schedule Of Operating Income, By Geographical Areas

		Years Ended December 31,
		2011				2010			2009
Operating income:
Americas	$	55,140			$	71,339		$	46,816
Europe		142,533				131,691			87,250
Asia Pacific		114,110				83,432			45,439
Unallocated:
Research and development expenses		(199,071	)		(158,149		)		(132,974	)
	$	112,712		$	128,313			$	46,531

Schedule Of Interest Income, By Geographical Areas

		Years Ended December 31,
		2011		2010		2009
Interest income:
Americas	$	408	$	588	$	803
Europe		771		699		727
Asia Pacific		140		104		99
	$	1,319	$	1,391	$	1,629

Schedule Of Long-Lived Assets, By Geographical Areas

		December 31,
	2011			2010
Long-lived assets:
Americas	$	110,153	$	103,033
Europe		47,000		40,083
Asia Pacific		32,995		17,294
	$	190,148	$	160,410

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Stockholders' Equity And Stock-Based Compensation (Schedule Of Restricted Stock Plans) (Details) (Restricted Stock Units [Member], USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of RSUs, Balance	2,996,297	3,456,651	3,247,842
Number of RSUs, Granted	1,370,666	294,030	906,124
Number of RSUs, Earned	(860,598)	(680,188)	(610,734)
Number of RSUs, Cancelled	(84,843)	(74,196)	(86,581)
Number of RSUs, Balance	3,421,522	2,996,297	3,456,651
Weighted Average Grant Price, Balance	$ 17.97	$ 17.65	$ 17.99
Weighted Average Grant Price, Granted	$ 30.14	$ 22.60	$ 14.53
Weighted Average Grant Price, Earned	$ 30.30	$ 23.05	$ 14.69
Weighted Average Grant Price, Cancelled	$ 20.82	$ 18.47	$ 18.59
Weighted Average Grant Price, Balance	$ 22.75	$ 17.97	$ 17.65

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Acquisitions

12 Months Ended

Dec. 31, 2011

Acquisitions [Abstract]

Acquisitions

Note 15 – Acquisitions

AWR Corporation

     On June 30, 2011, we acquired all of the outstanding shares of AWR Corporation (AWR), a privately held company that is a leading supplier of electronic design automation software for designing radio frequency and high-frequency components and systems for the semiconductor, aerospace and defense, communications and test equipment industries. The acquisition is expected to improve customer productivity through increased interoperability between upfront design and validation and production test functions. The purchase price of the acquisition was $66 million consisting of $54 million in cash and a three-year earn-out arrangement. We funded the purchase price from existing cash balances. The range of potential undiscounted payments that we could be required to make under the earn-out arrangement is between $0 and $29 million and are payable if AWR achieves certain revenue and operating income targets. The fair value of the earn-out arrangement was estimated at $12 million using the income approach, the key assumptions which included probability-weighted revenue and operating expense growth projections.

     The allocation of the purchase price was determined using the fair value of assets and liabilities acquired as of June 30, 2011. The primary area which is not finalized is deferred taxes. Our consolidated financial statements include the operating results from the date of acquisition. Pro-forma results of operations have not been presented because the effects of those operations were not material. The following table summarizes the allocation of the purchase price of AWR (in thousands):

		Amount
Net tangible assets acquired	$	10,718
Amortizable intangible assets		31,685
Deferred tax liability		(10,011	)
Goodwill		34,003
Total	$	66,395

     Goodwill is not deductible for tax purposes. Amortizable intangible assets have useful lives of 5 years from the date of acquisition.

Phase Matrix Inc.

     On May 20, 2011, we acquired all of the outstanding shares of Phase Matrix, Inc. (PMI), a privately held company that designs and manufactures radio frequency and microwave test and measurement instruments, subsystems and components. The acquisition is expected to speed our deployment of high-performance RF and wireless technologies to our production test and R&D customers. The purchase price of the acquisition was $40.7 million consisting of $38.9 million in cash and $1.8 million in shares of our common stock. We funded the cash portion of the purchase price from existing cash balances.

     The allocation of the purchase price was determined using the fair value of assets and liabilities acquired as of May 20, 2011. Our consolidated financial statements include the operating results from the date of acquisition. Pro-forma results of operations have not been presented because the effects of those operations were not material. The following table summarizes the allocation of the purchase price of Phase Matrix, Inc. (in thousands):

		Amount
Net tangible assets acquired	$	5,624
Amortizable intangible assets		8,331
Goodwill		26,725
Total	$	40,680

     Goodwill is deductible for tax purposes. Amortizable intangible assets have useful lives which range from 9 months to 8 years from the date of acquisition. These assets are also deductible for tax purposes.

Other acquisitions

     On December 31, 2010, we acquired all of the outstanding shares of a privately-held company for $2.3 million in net cash with an additional $500,000 in net cash to be paid out over the next three years. The purchase price for this acquisition included net working capital of $187,000, amortizable intangible assets of $1.5 million, and goodwill of $1.1 million. Our consolidated financial statements include the operating results of the acquired company from the date of acquisition.

     On February 1, 2010, we acquired all of the outstanding shares of a privately-held company for $2.2 million in net cash, $3.0 million in shares of our common stock with the remainder to be paid in cash over the next four years. The purchase price allocation for this acquisition included net working capital of $1.1 million, amortizable intangible assets of $5.0 million, and goodwill of $5.0 million. Our consolidated financial statements include the operating results of the acquired company from the date of acquisition.

     For these other acquisitions, goodwill is not deductible for tax purposes. Existing technology, non-competition agreements, trademarks, and customer relationships have useful lives of 5 years, 3 years, 3 years, and 5 years, respectively, from the date of acquisition. These assets are not deductible for tax purposes.

     Pro forma results of operations have not been presented because the effect of these acquisitions is not material either individually or in the aggregate to our consolidated results of operations.

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Commitments, Contingencies And Leases (Tables)

12 Months Ended

Dec. 31, 2011

Commitments, Contingencies And Leases [Abstract]

Future Minimum Lease Payments

2012	$	14,426
2013		10,252
2014		8,747
2015		7,707
2016		4,857
Thereafter		8,321
	$	54,310

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Operations And Summary Of Significant Accounting Policies (Policy)

12 Months Ended

Dec. 31, 2011

Operations And Summary Of Significant Accounting Policies [Abstract]

Principles Of Consolidation

Principles of consolidation

The Consolidated Financial Statements include the accounts of National Instruments Corporation and its subsidiaries. All significant intercompany accounts and transactions have been eliminated.

Use Of Estimates

Use of estimates

The preparation of our financial statements in conformity with U.S. generally accepted accounting principles requires us to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues, expenses and related disclosures of contingent assets and liabilities. We base our estimates on past experience and other assumptions that we believe are reasonable under the circumstances, and we evaluate these estimates on an ongoing basis. Our critical accounting policies are those that affect our financial statements materially and involve difficult, subjective or complex judgments by management. Although these estimates are based on management's best knowledge of current events and actions that may impact the company in the future, actual results may be materially different from the estimates.

Cash And Cash Equivalents

Cash and cash equivalents

Cash and cash equivalents include cash and highly liquid investments with maturities of three months or less at the date of acquisition.

Short-Term Investments

Short-Term Investments

We value our available-for-sale short term investments based on pricing from third party pricing vendors, who may use quoted prices in active markets for identical assets (Level 1 inputs) or inputs other than quoted prices that are observable either directly or indirectly (Level 2 inputs) in determining fair value. We classify all of our fixed income available-for-sale securities as having Level 2 inputs. The valuation techniques used to measure the fair value of our financial instruments having Level 2 inputs were derived from non-binding market consensus prices that are corroborated by observable market data, quoted market prices for similar instruments, or pricing models, such as discounted cash flow techniques. We believe all of these sources reflect the credit risk associated with each of our available for sale short term investments. Short-term investments available-for-sale consists of debt securities issued by states of the U.S. and political subdivisions of the U.S., corporate debt securities and debt securities issued by U.S. government corporations and agencies as well as debt securities issued by foreign governments. All short-term investments available-for-sale have contractual maturities of less than 24 months.

Our investments are classified as available-for-sale and accordingly are reported at fair value, with unrealized gains and losses reported as other comprehensive income, a component of stockholders' equity. Unrealized losses are charged against income when a decline in fair value is determined to be other than temporary. Investments with maturities beyond one year are classified as short-term based on their highly liquid nature and because such marketable securities represent the investment of cash that is available for current operations. The fair value of our short-term investments in debt securities at December 31, 2011 and December 31, 2010 was $224 million and $131 million, respectively. The increase was due to the net purchase of $  91million of short-term investments which was done to continue the diversification our holdings from money market accounts to debt securities and to take advantage of higher yields associated with longer maturity debt securities. We have $32 million U.S. dollar equivalent of German government sovereign debt that is denominated in Euro. Our German government sovereign debt holdings have a maximum maturity of 18 months and carry Aaa/AAA ratings.

We follow the guidance provided by FASB ASC 320 to assess whether our investments with unrealized loss positions are other than temporarily impaired. Realized gains and losses and declines in value judged to be other than temporary are determined based on the specific identification method and are reported in other income (expense), net, in our Consolidated Statements of Income. We did not identify or record any other-than-temporary impairments during 2011, 2010 and 2009.

Accounts Receivable, Net

Accounts Receivable, net

Accounts receivable are recorded net of allowances for sales returns of $1.6 million and $1.7 million at December 31, 2011 and 2010, respectively, and net of allowances for doubtful accounts of $2.6 million and $2.1 million at December 31, 2011 and 2010, respectively. A provision for estimated sales returns is made by reducing recorded revenue based on historical experience. We analyze historical returns, current economic trends and changes in customer demand of our products when evaluating the adequacy of our sales returns allowance. Our allowance for doubtful accounts is based on historical experience. We analyze historical bad debts, customer concentrations, customer creditworthiness and current economic trends when evaluating the adequacy of our allowance for doubtful accounts.

			Balance at								Balance at
			Beginning								End of
Year	Description		of Period		Provisions			Write-Offs			Period
2009	Allowance for doubtful accounts and sales returns	$	5,682	$	337		$	1,400		$	4,619
2010	Allowance for doubtful accounts and sales returns	$	4,619	$	(578	)	$	273		$	3,768
2011	Allowance for doubtful accounts and sales returns	$	3,768	$	385		$	(88	)	$	4,241

Inventories, Net

Inventories, net

Inventories are stated at the lower-of-cost or market. Cost is determined using standard costs, which approximate the first-in first-out ("FIFO") method. Cost includes the acquisition cost of purchased components, parts and subassemblies, in-bound freight costs, labor and overhead. Market is replacement cost with respect to raw materials and is net realizable value with respect to work in process and finished goods.

Inventory is shown net of adjustment for excess and obsolete inventories of $4.2 million, $3.3 million and $4.4 million at December 31, 2011, 2010 and 2009, respectively.

			Balance at						Balance at
			Beginning						End of
Year	Description		of Period		Provisions		Write-Offs		Period
2009	Adjustment for excess and obsolete inventories	$	4,409	$	1,492	$	1,511	$	4,390
2010	Adjustment for excess and obsolete inventories	$	4,390	$	1,785	$	2,835	$	3,340
2011	Adjustment for excess and obsolete inventories	$	3,340	$	3,554	$	2,689	$	4,205

Property And Equipment, Net

Property and equipment, net

Property and equipment are recorded at cost. Depreciation is computed using the straight-line method over the estimated useful lives of the assets, which range from twenty to forty years for buildings, three to seven years for purchased internal use software and for equipment which are each included in furniture and equipment. Leasehold improvements are depreciated over the shorter of the life of the lease or the asset.

Intangible Assets, Net

Intangible assets, net

We capitalize costs related to the development and acquisition of certain software products. Capitalization of costs begins when technological feasibility has been established and ends when the product is available for general release to customers. Technological feasibility for our products is established when the product is available for beta release. Amortization is computed on an individual product basis for those products available for market and is recognized based on the product's estimated economic life, generally three years.

We use the services of outside counsel to search for, document, and apply for patents. Those costs, along with any filing or application fees, are capitalized. Costs related to patents which are abandoned are written off. Once a patent is granted, the patent costs are amortized ratably over the legal life of the patent, generally ten to seventeen years.

At each balance sheet date, the unamortized costs for all intangible assets are reviewed by management and reduced to net realizable value when necessary.

Goodwill

Goodwill

The excess purchase price over the fair value of assets acquired is recorded as goodwill. As we have one operating segment, we allocate goodwill to one reporting unit for goodwill impairment testing. Goodwill is tested for impairment on an annual basis, and between annual tests if indicators of potential impairment exist, using a fair-value-based approach based on the market capitalization of the reporting unit. Our annual impairment test was performed as of February 28, 2011. No impairment of goodwill was identified during 2011 and 2010. Goodwill is deductible for tax purposes in certain jurisdictions.

Concentrations Of Credit Risk

Concentrations of credit risk

We maintain cash and cash equivalents with various financial institutions located in many countries throughout the world. At December 31, 2011, $106.4 million or 75% of our cash and cash equivalents was held in cash in various operating accounts with financial institutions throughout the world, $22.7 million or 16% was held in money market accounts and $13.5 million or 9% was held in U.S. Treasuries. The most significant of our operating accounts was our domestic operating account which held approximately $8.1 million or 6% of our total cash and cash equivalents at a bank that carried A+/A2/AA- ratings at December 31, 2011. From a geographic standpoint, approximately $37.1 million or 26% was held in various domestic accounts with financial institutions and $105.5 million or 74% was held in various accounts outside of the U.S. with financial institutions. At December 31, 2011, our short-term investments consist of $32.2 million or 14% of foreign government bonds, $157.4 million or 70% of U.S. treasuries and agencies, $12.4 million or 6% of municipal bonds, $18.6 million or 8% of corporate bonds and $2.9 million or 1% in time deposits.

The goal of our investment policy is to manage our investment portfolio to preserve principal and liquidity while maximizing the return on our investment portfolio through the full investment of available funds. We place our cash investments in instruments that meet credit quality standards, as specified in our corporate investment policy guidelines. These guidelines also limit the amount of credit exposure to any one issue, issuer or type of instrument. Our cash equivalents and short-term investments carried ratings from the major credit rating agencies that were in accordance with our corporate investment policy. Our investment policy allows investments in the following; government and federal agency obligations, repurchase agreements ("Repos"), certificates of deposit and time deposits, corporate obligations, medium term notes and deposit notes, commercial paper including asset-backed commercial paper ("ABCP"), puttable bonds, general obligation and revenue bonds, money market funds, taxable commercial paper, corporate notes/bonds, municipal notes, municipal obligations, variable rate demand notes and tax exempt commercial paper. All such instruments must carry minimum ratings of A1/P1/F1, MIG1/VMIG1/SP1 and A2/A/A, as applicable, all of which are considered "investment grade". Our investment policy for marketable securities requires that all securities mature in three years or less, with a weighted average maturity of no longer than 18 months with at least 10% maturing in 90 days or less. (See Note 2 – Cash, cash equivalents, short-term and long-term investments in Notes to Consolidated Financial Statements for further discussion and analysis of our investments.).

Concentration of credit risk with respect to trade accounts receivable is limited due to our large number of customers and their dispersion across many countries and industries. The amount of sales to any individual customer did not exceed 4% of revenue for the periods presented. The largest trade account receivable from any individual customer at December 31, 2011 was approximately $4.9 million.

Key Supplier Risk

Key supplier risk

Our manufacturing processes use large volumes of high-quality components and subassemblies supplied by outside sources. Several of these components are available through sole or limited sources. Supply shortages or quality problems in connection with some of these key components could require us to procure components from replacement suppliers, which would cause significant delays in fulfillment of orders and likely result in additional costs. In order to manage this risk, we maintain safety stock of some of these single sourced components and subassemblies and perform regular assessments of suppliers performance, grading key suppliers in critical areas such as quality and "on-time" delivery.

Revenue Recognition

Revenue recognition

We derive revenue primarily from the sale/licensing of integrated hardware and software solutions. Independent sales of application software licenses include post contract support services. In addition, training services are sold separately and revenue is recognized as the services are performed. The products and services are generally sold under standardized licensing and sales arrangements with payment terms ranging from net 30 days in the United States to net 30 days and up to net 90 days in some international markets. Approximately 86% of our product/license sales include both hardware and software in the customer arrangement, with a small percentage of sales including other services. We offer rights of return and standard warranties for product defects related to our products. The rights of return are generally for a period of up to 30 days after the delivery date. Our standard warranties cover periods ranging from 90 days to three years. We do not generally enter into contracts requiring product acceptance from the customer.

Revenue is recognized in accordance with the provisions of FASB ASC 985, when persuasive evidence of an arrangement exists, delivery has occurred, the fee is fixed or determinable, and collectability is probable. We enter into certain arrangements where we are obligated to deliver multiple products and/or services ("multiple elements"). In these transactions, we allocate the total revenue among the elements based on vendor specific objective evidence ("VSOE") of fair value as determined by the sales price of each element when sold separately.

When VSOE of fair value is not available for a delivered element but is available for the undelivered element of a multiple element arrangement, sales revenue is generally recognized on the date the product is shipped, using the residual method under FASB ASC 985, with a portion of revenue recorded as deferred (unearned) due to applicable undelivered elements. Undelivered elements for our multiple element arrangements with a customer are generally restricted to post contract support and training and education. The amount of revenue allocated to these undelivered elements is based on the VSOE of fair value for those undelivered elements. Deferred revenue due to undelivered elements is recognized ratably over the service period or when the service is completed. When VSOE of fair value is not available for the undelivered element of a multiple element arrangement, sales revenue for the entire sales contract value is generally recognized ratably over the service period of the undelivered element, generally 12 months or when the service is completed in accordance with the subscription method. Deferred revenue at December 31, 2011 and 2010 was $90.1 million and $71.7 million, respectively.

The application of FASB ASC 985 requires judgment, including whether a software arrangement includes multiple elements, and if so, whether VSOE of fair value exists for those elements. Changes to the elements in a software arrangement, the ability to identify VSOE for those elements, the fair value of the respective elements, and changes to a product's estimated life cycle could materially impact the amount of our earned and unearned revenue. Judgment is also required to assess whether future releases of certain software represent new products or upgrades and enhancements to existing products.

On January 1, 2011, we prospectively adopted accounting rules that changed the criteria for separating consideration in multiple-deliverable arrangements. The new rules changed the application of the residual method of allocation and require that arrangement consideration be allocated at the inception of an arrangement to all deliverables using the relative selling price method. The relative selling price method allocates any discount in the arrangement proportionally to each deliverable on the basis of each deliverable's selling price. The selling price used for each deliverable will be based on VSOE if available, third–party evidence if vendor-specific objective evidence is not available, or estimated selling price if neither vendor-specific objective evidence nor third-party evidence is available. The adoption of the amended revenue recognition rules did not change the units of accounting for our revenue transactions. It also did not significantly change how we allocated the arrangement consideration to the various units of accounting or the timing of revenue. The impact of our adoption was not material to our consolidated financial statements for the year ended December 31, 2011.

Product revenue

Our product revenue is generated predominantly from the sales of measurement and automation products. Our products consist of application software and hardware components together with related driver software.

Software maintenance revenue

Software maintenance revenue is post contract customer support that provides the customer with unspecified upgrades/updates and technical support.

Shipping And Handling Costs

Shipping and handling costs

Our shipping and handling costs charged to customers are included in net sales, and the associated expense is recorded in cost of sales for all periods presented.

Warranty Reserve

Warranty reserve

We offer a one-year limited warranty on most hardware products and extended two or three-year warranties on a subset of our hardware products, which is included in the sales price of many of our products. Provision is made for estimated future warranty costs at the time of the sale for the estimated costs that may be incurred under the basic limited warranty. Our estimate is based on historical experience and product sales.

The warranty reserve for the years ended December 31, 2011, 2010 and 2009, respectively, was as follows (in thousands):

		2011			2010			2009
Balance at the beginning of the period	$	921		$	921		$	952
Accruals for warranties issued during the period		2,954			1,993			1,991
Settlements made (in cash or in kind) during the period		(2,604	)		(1,993	)		(2,022	)
Balance at the end of the period	$	1,271		$	921		$	921

Loss Contingencies

Loss contingencies

We accrue for probable losses from contingencies including legal defense costs, on an undiscounted basis, when such costs are considered probable of being incurred and are reasonably estimable. We periodically evaluate available information, both internal and external, relative to such contingencies and adjust this accrual as necessary.

Advertising Expense

Advertising expense

We expense costs of advertising as incurred. Advertising expense for the years ended December 31, 2011, 2010 and 2009 was $14.7 million, $13.2 million and $13.6 million, respectively.

Foreign Currency Translation

Foreign currency translation

The functional currency for our international sales operations is the applicable local currency. The assets and liabilities of these operations are translated at the rate of exchange in effect on the balance sheet date and sales and expenses are translated at average rates. The resulting gains or losses from translation are included in a separate component of other comprehensive income. Gains and losses resulting from re-measuring monetary asset and liability accounts that are denominated in a currency other than a subsidiary's functional currency are included in net foreign exchange gain (loss) and are included in net income.

Foreign Currency Hedging Instruments

Foreign currency hedging instruments

All of our derivative instruments are recognized on the balance sheet at their fair value. We currently use foreign currency forward and purchased option contracts to hedge our exposure to material foreign currency denominated receivables and forecasted foreign currency cash flows.

On the date the derivative contract is entered into, we designate the derivative as a hedge of the variability of foreign currency cash flows to be received or paid ("cash flow" hedge) or as a hedge of our foreign denominated net receivable positions ("other derivatives"). Changes in the fair value of derivatives that are designated and qualify as cash flow hedges and that are deemed to be highly effective are recorded in other comprehensive income. These amounts are subsequently reclassified into earnings in the period during which the hedged transaction is realized. The gain or loss on the other derivatives as well as the offsetting gain or loss on the hedged item attributable to the hedged risk is recognized in current earnings under the line item "Net foreign exchange gain (loss)". We do not enter into derivative contracts for speculative purposes.

We formally document all relationships between hedging instruments and hedged items, as well as our risk-management objective and strategy for undertaking various hedge transactions at the inception of the hedge. This process includes linking all derivatives that are designated as cash flow hedges to specific forecasted transactions. We also formally assess, both at the hedge's inception and on an ongoing basis, whether the hedging instruments are highly effective in offsetting changes in cash flows of hedged items.

We prospectively discontinue hedge accounting if (1) it is determined that the derivative is no longer highly effective in offsetting changes in the fair value of a hedged item (forecasted transactions); or (2) the derivative is de-designated as a hedge instrument, because it is unlikely that a forecasted transaction will occur. When hedge accounting is discontinued, the derivative is sold and the resulting gains and losses are recognized immediately in earnings.

Income Taxes

Income taxes

We account for income taxes under the asset and liability method. Deferred tax assets and liabilities are recognized for the expected tax consequences of temporary differences between the tax basis of assets and liabilities and their reported amounts. Valuation allowances are established when necessary to reduce deferred tax assets to amounts which are more likely than not to be realized. Judgment is required in assessing the future tax consequences of events that have been recognized in our financial statements or tax returns. Variations in the actual outcome of these future tax consequences could materially impact our financial position or our results of operations. In estimating future tax consequences, all expected future events are considered other than enactments of changes in tax laws or rates. We account for uncertainty in income taxes recognized in our financial statements using prescribed recognition thresholds and measurement attributes for financial statement disclosure of tax positions taken or expected to be taken on our tax returns. Our continuing policy is to recognize interest and penalties related to income tax matters in income tax expense.

Earnings Per Share

Earnings per share

Basic earnings per share ("EPS") is computed by dividing net income by the weighted average number of common shares outstanding during each period. Diluted EPS is computed by dividing net income by the weighted average number of common shares and common share equivalents outstanding (if dilutive) during each period. The number of common share equivalents, which include stock options and restricted stock units, is computed using the treasury stock method.

The reconciliation of the denominators used to calculate basic EPS and diluted EPS for the years ended December 31, 2011, 2010 and 2009, respectively, are as follows (in thousands):

	Years Ended December 31,
	2011	2010	2009
Weighted average shares outstanding-basic	119,836	116,973	116,280
Plus: Common share equivalents
Stock options, restricted stock units	1,384	1,599	759
Weighted average shares outstanding-diluted	121,220	118,572	117,039

Stock awards to acquire 477,019, 322,896 and 4,067,964 shares for the years ended December 31, 2011, 2010 and 2009, respectively, were excluded in the computations of diluted EPS because the effect of including the stock options would have been anti-dilutive.

On January 21, 2011, our Board of Directors declared a 3 for 2 stock split which was effected as a stock dividend, and paid on February 21, 2011, to stockholders of record on February 4, 2011. All per share data and numbers of common shares, where appropriate, have been retroactively adjusted to reflect the stock split.

Stock-Based Compensation

Stock-based compensation

Effective January 1, 2006, we adopted FASB ASC 718, Compensation – Stock Compensation (FASB ASC 718), using the modified-prospective-transition method. Under this method, prior periods are not restated. Under this transition method, stock compensation cost recognized beginning January 1, 2006 includes: (a) compensation cost for all share-based payments granted prior to, but not yet vested as of January 1, 2006, based on the grant date fair value estimated in accordance with the original provisions of FASB ASC 718, and (b) compensation cost for all share-based payments granted on or subsequent to January 1, 2006, based on the grant-date fair value estimated in accordance with the provisions of FASB ASC 718.

Comprehensive Income

Comprehensive income

Our comprehensive income is comprised of net income, foreign currency translation and unrealized gains and losses on forward and option contracts and securities available-for-sale. Comprehensive income for 2011, 2010 and 2009 was $91.3 million, $94.9 million and $20.1 million, respectively.

Recently Issued Accounting Pronouncements

Recently Issued Accounting Pronouncements

In October 2009, the FASB updated FASB ASC 605, Revenue Recognition (FASB ASC 605) that amended the criteria for separating consideration in multiple-deliverable arrangements. The amendments establish a selling price hierarchy for determining the selling price of a deliverable. The selling price used for each deliverable will be based on vendor-specific objective evidence if available, third–party evidence if vendor-specific objective evidence is not available, or estimated selling price if neither vendor-specific objective evidence nor third-party evidence is available. The amendments will change the application of the residual method of allocation and require that arrangement consideration be allocated at the inception of the arrangement to all deliverables using the relative selling price method. The relative selling price method allocates any discount in the arrangement proportionally to each deliverable on the basis of each deliverable's selling price. This update was effective prospectively for revenue arrangements entered into or materially modified in fiscal years beginning on or after June 15, 2010. On January 1, 2011, we adopted the accounting update as required on a prospective basis. The adoption of the amended revenue recognition rules did not change the units of accounting for our revenue transactions. It also did not significantly change how we allocated the arrangement consideration to the various units of accounting or the timing of revenue. The impact of our adoption was not material to our consolidated financial statements for the year ended December 31, 2011. We cannot reasonably estimate the effect of adopting these standards on future financial periods as the impact will vary depending on the nature and volume of new or materially modified sales arrangements in any given period. In addition, as our, or our competitors', pricing practices and strategies evolve, we may modify our pricing practices in the future. This may result in a different allocation of revenue to the deliverables in the multiple element arrangements from the current fiscal quarter, which may change the pattern and timing of revenue recognition for these elements, but will not change the total revenue recognized for the arrangement.

In January 2010, the FASB updated FASB ASC 820, Fair Value Measurements and Disclosures (FASB ASC 820) that requires additional disclosures and clarifies existing disclosures regarding fair value measurements. The additional disclosures include (i) transfers in and out of Levels 1 and 2 and (ii) activity in Level 3 fair value measurements. The update provides amendments that clarify existing disclosures on level of disaggregation and disclosures about inputs and valuation techniques. This update is effective for interim and annual reporting periods beginning after December 15, 2009, except for the disclosures about purchases, sales, issuances, and settlements in the roll forward of activity in Level 3 fair value measurements. These disclosures are effective for fiscal years beginning after December 15, 2010, and for interim periods within those fiscal years. We adopted the update on January 1, 2010 as required and subsequently adopted on January 1, 2011, the update surrounding disclosures on Level 3 fair value measurements and concluded it did not have a material impact on our consolidated financial position or results of operations. In May 2011, the FASB updated FASB ASC 820 that resulted in common fair value measurement and disclosure requirements in U.S. GAAP and International Financial Reporting Standards (IFRSs). Some of the amendments clarify the FASB's intent about the application of existing fair value measurement requirements. Other amendments change a particular principle or requirement for measuring fair value or for disclosing information about fair value measurements. The amendments are to be applied prospectively and are effective during interim and annual periods beginning after December 15, 2011. We are currently evaluating the requirements of this update and have not yet determined the impact on our consolidated financial statements.

In June 2011, the FASB updated FASB ASC 220, Comprehensive Income (FASB ASC 220) that gives an entity the option to present the total of comprehensive income, the components of net income, and the components of other comprehensive income either in a single continuous statement of comprehensive income or in two separate but consecutive statements. In both choices, an entity is required to present each component of net income along with total net income, each component of other comprehensive income along with a total for other comprehensive income, and a total amount for comprehensive income. The update does not change the items that must be reported in other comprehensive income or when an item of other comprehensive income must be reclassified to net income. The update does not change the option for an entity to present components of other comprehensive income either net of related tax effects or before related tax effects, with one amount shown for the aggregate income tax expense or benefit related to the total of other comprehensive income items. The update does not affect how earnings per share is calculated or presented. The update should be applied retrospectively and is effective for fiscal years, and interim periods within those years, beginning after December 15, 2011. We are currently evaluating the requirements of this update and have not yet determined the impact on our consolidated financial statements.

In September 2011, the FASB updated FASB ASC 350, Goodwill and Other (FASB ASC 350) that gives an entity the option to first assess qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If, after assessing the totality of events or circumstances, an entity determines it is not more likely than not that the fair value of a reporting unit is less than its carrying amount, then performing the two-step impairment test is unnecessary. The amendments are effective for annual and interim goodwill impairment test performed for fiscal years beginning after December 15, 2011. We are currently evaluating the requirements of this update and have not yet determined the impact on our consolidated financial statements.

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Employee Retirement Plan (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Employee Retirement Plan [Abstract]
Number of days of continuous service for eligibility to participate in defined contribution benefit plan	30
Maximum contribution percentage of employee salary	15.00%
Percentage of employee contribution matched by Board of Directors	50.00%
Maximum percentage of each participant's compensation	6.00%
Employee eligibility period for matching contribution (years)	1
Company contributions	$ 4.7	$ 4.4	$ 3.9

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Consolidated Statements Of Stockholders' Equity (Parenthetical) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Consolidated Statements Of Stockholders' Equity [Abstract]
Foreign currency translation adjustment, tax expense\benefit	$ 190	$ 926	$ (1,799)
Unrealized gain on securities available-for-sale, tax expense\benefit	157	(115)	(1,093)
Unrealized loss on derivative instruments, tax expense\benefit	$ 161	$ 1,705	$ (3,053)

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Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2011	Dec. 31, 2010
Consolidated Balance Sheets [Abstract]
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	180,000,000	180,000,000
Common stock, shares issued	120,677,143	117,904,975
Common stock, shares outstanding	120,677,143	117,904,975

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Stockholders' Equity And Stock-Based Compensation

12 Months Ended

Dec. 31, 2011

Stockholders' Equity And Stock-Based Compensation [Abstract]

Stockholders' Equity And Stock-Based Compensation

Note 10 – Stockholders' equity and stock-based compensation

Stock option plans

     Our stockholders approved the 1994 Incentive Stock Option Plan (the "1994 Plan") on May 9, 1994. At the time of approval, 13,668,750 shares of our common stock were reserved for issuance under this plan. In 1997, an additional 10,631,250 shares of our common stock were reserved for issuance under this plan, and an additional 1,125,000 shares were reserved for issuance under this plan in 2004. The 1994 Plan terminated in May 2005, except with respect to outstanding awards previously granted thereunder.

     Awards under the plan were either incentive stock options within the meaning of Section 422 of the Internal Revenue Code or nonqualified options. The right to purchase shares under the options vests over a five to ten-year period, beginning on the date of grant. Vesting of ten year awards may accelerate based on the Company's previous year's earnings and revenue growth but shares cannot accelerate to vest over a period of less than five years. Stock options must be exercised within ten years from date of grant. Stock options were issued with an exercise price which was equal to the market price of our common stock at the grant date. We estimate potential forfeitures of stock grants and adjust compensation cost recorded accordingly. The estimate of forfeitures will be adjusted over the requisite service period to the extent that actual forfeitures differ, or are expected to differ, from such estimates. Changes in estimated forfeitures will be recognized through a cumulative catch-up adjustment in the period of change and will also impact the amount of stock compensation expense to be recognized in future periods. During the year ended December 31, 2011, we did not make any changes in accounting principles or methods of estimates related to the 1994 Plan.

Transactions under all stock option plans are summarized as follows:

				Weighted
	Number of			average
	shares under			exercise
	option			price
Outstanding at December 31, 2008	6,408,850		$	17.31
Exercised	(569,445	)	$	10.27
Canceled	(272,151	)	$	17.87
Granted	0			0
Outstanding at December 31, 2009	5,567,254		$	17.95
Exercised	(2,291,757	)	$	17.55
Canceled	(941,049	)	$	20.93
Granted	0			0
Outstanding at December 31, 2010	2,334,448		$	17.15
Exercised	(932,895	)	$	29.31
Canceled	(84,337	)	$	16.23
Granted	0			0
Outstanding at December 31, 2011	1,317,216		$	18.07

Options exercisable at December 31:
2009	5,240,361	$	17.96
2010	2,138,886	$	17.07
2011	1,270,775	$	18.06

     The aggregate intrinsic value of stock options at exercise, represented in the table above, was $13.0 million, $12.0 million and $2.3 million for the years ended December 31, 2011, 2010 and 2009, respectively. Total unrecognized stock-based compensation expense related to non-vested stock options was approximately $354,500 as of December 31, 2011, related to approximately 46,441 shares with a per share weighted average fair value of $11.86. We anticipate this expense to be recognized over a weighted average period of approximately 1.5 years.

			Outstanding and Exercisable by Price Range as of December 31, 2011
			Options Outstanding			Options Exercisable
		Number outstanding as	Weighted average		Weighted average	Number exercisable		Weighted average
	Range of Exercise prices	of 12/31/2011	remaining contractual life		exercise price	as of 12/31/2011		exercise price
$	10.72– $15.09	344,972	1.90	$	13.87	330,907	$	13.84
$	15.09– $19.69	215,971	1.42	$	18.20	215,137	$	18.19
$	19.69– $21.67	756,273	2.23	$	19.95	724,731	$	19.95
$	10.72– $21.67	1,317,216	2.01	$	18.07	1,270,775	$	18.06

     The weighted average remaining contractual life of options exercisable as of December 31, 2011 was 2.0 years. The aggregate intrinsic value of options outstanding as of December 31, 2011 was $10.4 million. The aggregate intrinsic value of options currently exercisable as of December 31, 2011 was $10.0 million. No options were granted in the years ended December 31, 2011, 2010 and 2009 as our incentive option plan terminated in May 2005.

Restricted stock plan

     Our stockholders approved our 2005 Incentive Plan (the "2005 Plan") on May 10, 2005. At the time of approval, 4,050,000 shares of our common stock were reserved for issuance under this plan, as well as the number of shares which had been reserved but not issued under the 1994 Plan (our incentive stock option plan which terminated in May 2005), and any shares that returned to the 1994 Plan as a result of termination of options or repurchase of shares issued under such plan. The 2005 Plan, administered by the Compensation Committee of the Board of Directors, provided for granting of incentive awards in the form of restricted stock and restricted stock units ("RSUs") to directors, executive officers and employees of the Company and its subsidiaries. Awards vest over a three, five or ten-year period, beginning on the date of grant. Vesting of ten year awards may accelerate based on the Company's previous year's earnings and growth but ten year awards cannot accelerate to vest over a period of less than five years. The 2005 Plan terminated on May 11, 2010, except with respect to outstanding awards previously granted thereunder. There were 3,362,304 shares of common stock that were reserved but not issued under the 1994 Plan and the 2005 Plan as of May 11, 2010.

     Our stockholders approved our 2010 Incentive Plan (the "2010 Plan") on May 11, 2010. At the time of approval, 3,000,000 shares of our common stock were reserved for issuance under this plan, as well as the 3,362,304 shares of common stock that were reserved but not issued under the 1994 Plan and the 2005 Plan as of May 11, 2010, and any shares that are returned to the 1994 Plan and the 2005 Plan as a result of the forfeiture or termination of options or RSUs or repurchases of shares issued under these plans. The 2010 Plan, administered by the Compensation Committee of the Board of Directors, provides for granting of incentive awards in the form of restricted stock and RSUs to employees, directors and consultants of the Company and employees and consultants of any parent or subsidiary of the Company. Awards vest over a three, five or ten-year period, beginning on the date of grant. Vesting of ten year awards may accelerate based on the Company's previous year's earnings and growth but ten year awards cannot accelerate to vest over a period of less than five years. At December 31, 2011, there were 4,964,018 shares available for grant under the 2010 Plan.

     We estimate potential forfeitures of RSUs and adjust compensation cost recorded accordingly. The estimate of forfeitures will be adjusted over the requisite service period to the extent that actual forfeitures differ, or are expected to differ, from such estimates. Changes in estimated forfeitures will be recognized through a cumulative catch-up adjustment in the period of change and will also impact the amount of stock compensation expense to be recognized in future periods. During the year ended December 31, 2011, we did not make any changes in accounting principles or methods of estimates related to the 2010 Plan.

Transactions under our Restricted Stock Plans are summarized as follows:

			RSUs
					Weighted Average
	Number of RSUs				Grant Price
Balance at December 31, 2008	3,247,842			$	17.99
Granted	906,124			$	14.53
Earned	(610,734	)		$	14.69
Canceled	(86,581	)		$	18.59
Balance at December 31, 2009	3,456,651			$	17.65
Granted	294,030			$	22.60
Earned	(680,188	)		$	23.05
Canceled	(74,196	)		$	18.47
Balance at December 31, 2010	2,996,297			$	17.97
Granted	1,370,666			$	30.14
Earned	(860,598	)		$	30.30
Canceled	(84,843	)		$	20.82
Balance at December 31, 2011	3,421,522			$	22.75

     Total unrecognized stock-based compensation expense related to non-vested RSUs was approximately $75.1 million as of December 31, 2011, related to 3,421,522 shares with a per share weighted average fair value of $22.75. We anticipate this expense to be recognized over a weighted average period of approximately 7.4 years.

Employee stock purchase plan

     Our employee stock purchase plan permits substantially all domestic employees and employees of designated subsidiaries to acquire our common stock at a purchase price of 85% of the lower of the market price at the beginning or the end of the purchase period. The plan has quarterly purchase periods generally beginning on February 1, May 1, August 1 and November 1 of each year. Employees may designate up to 15% of their compensation for the purchase of common stock under this plan. On May 10, 2011, our stockholders approved an additional 3,000,000 shares for issuance under our employee stock purchase plan, and at December 31, 2011, we had 3,680,138 shares of common stock reserved for future issuance under this plan. During the year ended December 31, 2011, we issued 940,703 shares under this plan. The weighted average purchase price of the employees' purchase rights for these shares was $21.82 per share and was estimated using the Black-Scholes model with the following assumptions:

	2011		2010		2009
Dividend expense yield	0.4	%	0.4	%	0.5	%
Expected life	3 months		3 months		3 months
Expected volatility	44	%	25	%	45	%
Risk-free interest rate	0.1	%	0.1	%	0.8	%

     During the year ended December 31, 2011, we did not make any changes in accounting principles or methods of estimates related to the employee stock purchase plan.

Weighted average, grant date fair value of purchase rights granted under the Employee Stock Purchase Plan are as follows:

			Weighted
	Number		average
	of shares		fair value
2009	1,257,804	$	3.83
2010	1,011,765	$	4.35
2011	940,703	$	6.56

Authorized Preferred Stock and Preferred Stock Purchase Rights Plan

     We have 5,000,000 authorized shares of preferred stock. On January 21, 2004, our Board of Directors designated 750,000 of these shares as Series A Participating Preferred Stock in conjunction with its adoption of a Preferred Stock Rights Agreement (the "Rights Agreement") and declaration of a dividend of one preferred share purchase right (a "Right") for each share of common stock outstanding held as of May 10, 2004 or issued thereafter. Each Right will entitle its holder to purchase one one-thousandth of a share of National Instruments' Series A Participating Preferred Stock at an exercise price of $200, subject to adjustment, under certain circumstances. The Rights Agreement was not adopted in response to any effort to acquire control of National Instruments.

     The Rights only become exercisable in certain limited circumstances following the tenth day after a person or group announces acquisitions of or tender offers for 20% or more of our common stock. In addition, if an acquirer (subject to certain exclusions for certain current stockholders of National Instruments, an "Acquiring Person") obtains 20% or more of our common stock, then each Right (other than the Rights owned by an Acquiring Person or its affiliates) will entitle the holder to purchase, for the exercise price, shares of our common stock having a value equal to two times the exercise price. Under certain circumstances, our Board of Directors may redeem the Rights, in whole, but not in part, at a purchase price of $0.01 per Right. The Rights have no voting privileges and are attached to and automatically traded with our common stock until the occurrence of specified trigger events. The Rights will expire on the earlier of May 10, 2014 or the exchange or redemption of the Rights.

There were not any shares of preferred stock issued and outstanding at December 31, 2011 and December 31, 2010.

Stock repurchases and retirements

     From time to time, our Board of Directors has authorized various programs to repurchase shares of our common stock depending on market conditions and other factors. Under such programs, we repurchased a total of 2,089,098, 2,165,161 and 6,165,063 shares of our common stock at weighted average prices of $20.04, $15.97 and $16.81 per share, in the years ended December 31, 2010, 2009 and 2008, respectively. On April 21, 2010, our Board of Directors approved a new share repurchase program that increased the aggregate number of shares of common stock that we are authorized to repurchase from 1,011,147 to 4.5 million. At December 31, 2011, there were 3,932,245 shares remaining available for repurchase under this plan. This repurchase plan does not have an expiration date. We did not repurchase any shares of our common stock under this plan in the year ended December 31, 2011.

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Document And Entity Information (USD $)	12 Months Ended
	Dec. 31, 2011	Feb. 02, 2012	Jun. 30, 2011
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2011
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2011
Entity Registrant Name	NATIONAL INSTRUMENTS CORP /DE/
Entity Central Index Key	0000935494
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		120,678,169
Entity Public Float			$ 2,326,245,669

XML

Employee Retirement Plan

12 Months Ended

Dec. 31, 2011

Employee Retirement Plan [Abstract]

Employee Retirement Plan

Note 11 – Employee retirement plan

     We have a defined contribution retirement plan pursuant to Section 401(k) of the Internal Revenue Code. Substantially all domestic employees with at least 30 days of continuous service are eligible to participate and may contribute up to 15% of their compensation. The Board of Directors has elected to make matching contributions equal to 50% of employee contributions, which may be applied to a maximum of 6% of each participant's compensation. Employees are eligible for matching contributions after one year of continuous service. Company contributions vest immediately. Our policy prohibits participants from direct investment in shares of our common stock within the plan. Company contributions charged to expense were $4.7 million, $4.4 million and $3.9 million in 2011, 2010 and 2009, respectively.

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Consolidated Statements Of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Net sales:
Product	$ 955,613	$ 807,386	$ 623,736
Software maintenance	81,667	65,834	52,858
GSA accrual	(13,107)	0	0
Total net sales	1,024,173	873,220	676,594
Cost of sales:
Product	235,839	195,096	164,700
Software maintenance	5,125	4,987	5,184
Total cost of sales	240,964	200,083	169,884
Gross profit	783,209	673,137	506,710
Operating expenses:
Sales and marketing	388,768	319,606	269,267
Research and development	199,071	158,149	132,974
General and administrative	82,658	67,069	57,938
Total operating expenses	670,497	544,824	460,179
Operating income	112,712	128,313	46,531
Other income (expense):
Interest income	1,319	1,391	1,629
Net foreign exchange gain (loss)	(2,755)	(2,585)	734
Other income (loss), net	(142)	993	1,351
Income before income taxes	111,134	128,112	50,245
Provision for income taxes	17,062	18,996	33,160
Net income	$ 94,072	$ 109,116	$ 17,085
Basic earnings per share	$ 0.79	$ 0.93	$ 0.15
Weighted average shares outstanding - basic	119,836	116,973	116,280
Diluted earnings per share	$ 0.78	$ 0.92	$ 0.15
Weighted average shares outstanding - diluted	121,220	118,572	117,039
Dividends declared per share	$ 0.40	$ 0.35	$ 0.32

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Inventories

12 Months Ended

Dec. 31, 2011

Inventories [Abstract]

Inventories

Note 5 – Inventories

Inventories, net at December 31, 2011 and December 31, 2010, consist of the following (in thousands):

		December 31,		December 31,
		2011		2010
Raw materials	$	56,139	$	55,218
Work-in-process		5,708		6,359
Finished goods		70,148		56,188
	$	131,995	$	117,765

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Derivative Instruments And Hedging Activities

12 Months Ended

Dec. 31, 2011

Derivative Instruments And Hedging Activities [Abstract]

Derivative Instruments And Hedging Activities

Note 4 – Derivative instruments and hedging activities

     We recognize all of our derivative instruments as either assets or liabilities in our statements of financial position at fair value. The accounting for changes in the fair value (i.e., gains or losses) of a derivative instrument depends on whether it has been designated and qualifies as part of a hedging relationship and further, on the type of hedging relationship. For those derivative instruments that are designated and qualify as hedging instruments, we designate the hedging instrument, based upon the exposure being hedged, as a fair value hedge, cash flow hedge, or a hedge of a net investment in a foreign operation.

     We have operations in over 40 countries. Sales outside of the Americas accounted for 60% and 59% of our revenues for the years ended December 31, 2011 and 2010, respectively. Our activities expose us to a variety of market risks, including the effects of changes in foreign currency exchange rates. These financial risks are monitored and managed by us as an integral part of our overall risk management program.

     We maintain a foreign currency risk management strategy that uses derivative instruments (foreign currency forward and purchased option contracts) to help protect our earnings and cash flows from fluctuations caused by the volatility in currency exchange rates. Movements in foreign currency exchange rates pose a risk to our operations and competitive position, since exchange rate changes may affect our profitability and cash flow, and the business or pricing strategies of our non-U.S. based competitors.

     The vast majority of our foreign sales are denominated in the customers' local currency. We purchase foreign currency forward and option contracts as hedges of forecasted sales that are denominated in foreign currencies and as hedges of foreign currency denominated receivables. These contracts are entered into to help protect against the risk that the eventual dollar-net-cash inflows resulting from such sales or firm commitments will be adversely affected by changes in exchange rates. We also purchase foreign currency forward contracts as hedges of forecasted expenses that are denominated in foreign currencies. These contracts are entered into to help protect against the risk that the eventual dollar-net-cash outflows resulting from foreign currency operating and cost of revenue expenses will be adversely affected by changes in exchange rates.

     We designate foreign currency forward and purchased option contracts as cash flow hedges of forecasted revenues or forecasted expenses. In addition, we hedge our foreign currency denominated balance sheet exposures using foreign currency forward contracts that are not designated as hedging instruments. None of our derivative instruments contain a credit-risk-related contingent feature.

Cash flow hedges

     To help protect against the reduction in value caused by a fluctuation in foreign currency exchange rates of forecasted foreign currency cash flows resulting from international sales over the next one to two years, we have instituted a foreign currency cash flow hedging program. We hedge portions of our forecasted revenue and forecasted expenses denominated in foreign currencies with forward and purchased option contracts. For forward contracts, when the dollar strengthens significantly against the foreign currencies, the change in the present value of future foreign currency cash flows may be offset by the change in the fair value of the forward contracts designated as hedges. For option contracts, when the dollar strengthens significantly against the foreign currencies, the change in the present value of future foreign currency cash flows may be offset by the change in the fair value of the option contracts net of the premium paid designated as hedges. Our foreign currency purchased option contracts are purchased "at-the-money" or "out-of-the-money". We purchase foreign currency forward and option contracts for up to 100% of our forecasted exposures in selected currencies (primarily in Euro, Japanese yen, British pound sterling, Korean won and Hungarian forint) and limit the duration of these contracts to 40 months or less.

     For derivative instruments that are designated and qualify as a cash flow hedge, the effective portion of the gain or loss on the derivative is reported as a component of accumulated other comprehensive income ("OCI") and reclassified into earnings in the same line item (net sales, operating expenses, or cost of sales) associated with the forecasted transaction and in the same period or periods during which the hedged transaction affects earnings. Gains and losses on the derivative representing either hedge ineffectiveness or hedge components excluded from the assessment of effectiveness are recognized in current earnings or expenses during the current period and are classified as a component of "net foreign exchange gain (loss)". Hedge effectiveness of foreign currency forwards and purchased option contracts designated as cash flow hedges are measured by comparing the hedging instrument's cumulative change in fair value from inception to maturity to the forecasted transaction's terminal value.

     We held forward contracts with a notional amount of $61.0 million dollar equivalent of Euro, $43.6 million dollar equivalent of Japanese yen, $3.3 million dollar equivalent of Korean won and $28.2 million dollar equivalent of Hungarian forint at December 31, 2011. These contracts are for terms of up to 24 months. At December 31, 2010, we held forward contracts with a notional amount of $28.3 million dollar equivalent of Euro, $6.0 million dollar equivalent of British pound sterling, $18.4 million dollar equivalent of Japanese yen, and $33.4 million dollar equivalent of Hungarian forint.

We did not have any purchased option contracts at December 31, 2011 and December 31, 2010.

     At December 31, 2011, we expect to reclassify $1.8 million of gains on derivative instruments from accumulated other comprehensive income to net sales during the next twelve months when the hedged international sales occur, $856,000 of losses on derivative instruments from accumulated OCI to cost of sales when the cost of sales are incurred and $486,000 of losses on derivative instruments from accumulated OCI to operating expenses during the next twelve months when the hedged operating expenses occur. Expected amounts are based on derivative valuations at December 31, 2011. Actual results may vary as a result of changes in the corresponding exchange rate subsequent to this date.

We did not record any ineffectiveness from our hedges during the year ended December 31, 2011.

Other Derivatives

     Other derivatives not designated as hedging instruments consist primarily of foreign currency forward contracts that we use to hedge our foreign denominated net receivable or net payable positions to protect against the change in value caused by a fluctuation in foreign currency exchange rates. We typically attempt to hedge up to 90% of our outstanding foreign denominated net receivables or net payables and typically limit the duration of these foreign currency forward contracts to approximately 120 days. The gain or loss on the derivatives as well as the offsetting gain or loss on the hedge item attributable to the hedged risk is recognized in current earnings under the line item "net foreign exchange gain (loss)". As of December 31, 2011 and December 31, 2010, we held foreign currency forward contracts with a notional amount of $53.8 million and $41.3 million, respectively.

     The following tables present the fair value of derivative instruments on our Consolidated Balance Sheets and the effect of derivative instruments on our Consolidated Statements of Income.

Fair Values of Derivative Instruments (in thousands):

			Asset Derivatives
	December 31, 2011				December 31, 2010
	Balance Sheet Location	Fair Value			Balance Sheet Location		Fair Value
Derivatives designated as hedging
instruments
Foreign exchange contracts - ST	Prepaid expenses and other				Prepaid expenses and other
forwards	current assets	$	2,500		current assets	$	1,104
Foreign exchange contracts - LT
forwards	Other long-term assets		190		Other long-term assets		490
Total derivatives designated as
hedging instruments		$	2,690			$	1,594
Derivatives not designated as
hedging instruments
Foreign exchange contracts - ST	Prepaid expenses and other				Prepaid expenses and other
forwards	current assets	$	1,607		current assets	$	731
Total derivatives not designated as
hedging instruments		$	1,607			$	731
Total asset derivatives		$	4,297			$	2,325
			Liability Derivatives
	December 31, 2011				December 31, 2010
	Balance Sheet Location	Fair Value			Balance Sheet Location		Fair Value
Derivatives designated as hedging
instruments
Foreign exchange contracts - ST	Accrued expenses and other				Accrued expenses and other
forwards	liabilities	$	(2,007	)	liabilities	$	(2,677	)
Foreign exchange contracts - LT
forwards	Other long-term liabilities		(1,770	)	Other long-term liabilities		0
Total derivatives designated as
hedging instruments		$	(3,777	)		$	(2,677	)
Derivatives not designated as
hedging instruments
Foreign exchange contracts - ST	Accrued expenses and other				Accrued expenses and other
forwards	liabilities	$	(765	)	liabilities	$	(1,056	)
Total derivatives not designated as
hedging instruments		$	(765	)		$	(1,056	)
Total liability derivatives		$	(4,542	)		$	(3,733	)

     The following table shows the effect of derivative instruments on the Consolidated Statements of Income for the years ended December 31, 2011 and 2010, respectively (in thousands):

December 31, 2011

				Location of Gain or		Gain or (Loss)
		Gain or (Loss)		(Loss) Reclassified		Reclassified from		Location of Gain or	Gain or (Loss)
Derivatives in Cash		Recognized in OCI on		from Accumulated	Accumulated OCI into			(Loss) Recognized in	Recognized in Income
Flow Hedging		Derivative (Effective		OCI into Income		Income (Effective		Income on Derivative	on Derivative
Relationship		Portion)		(Effective Portion)		Portion)		(Ineffective Portion)	(Ineffective Portion)
Foreign exchange
contracts - forwards and								Net foreign exchange
options	$	3,980		Net sales	$	(3,855	)	gain (loss)	$	0
Foreign exchange
contracts - forwards and								Net foreign exchange
options		(2,889	)	Cost of sales		1,378		gain (loss)		0
Foreign exchange
contracts - forwards and								Net foreign exchange
options		(1,396	)	Operating expenses		556		gain (loss)	$	0
Total	$	(305	)		$	(1,921	)		$	0

December 31, 2010
				Location of Gain or	Gain or (Loss)
	Gain or (Loss)			(Loss) Reclassified	Reclassified from		Location of Gain or		Gain or (Loss)
Derivatives in Cash	Recognized in OCI on			from Accumulated	Accumulated OCI into		(Loss) Recognized in		Recognized in Income
Flow Hedging	Derivative (Effective			OCI into Income	Income (Effective		Income on Derivative		on Derivative
Relationship	Portion)			(Effective Portion)	Portion)		(Ineffective Portion)		(Ineffective Portion)
Foreign exchange
contracts - forwards and							Net foreign exchange
options	$	(5,058	)	Net sales	$	5,852	gain (loss)		$	0
Foreign exchange
contracts - forwards and							Net foreign exchange
options		(3,166	)	Cost of sales		2,457	gain (loss)			0
Foreign exchange
contracts - forwards and							Net foreign exchange
options		(1,669	)	Operating expenses		1,237	gain (loss)		$	0
Total	$	(9,893	)		$	9,546			$	0
Derivatives not Designated as						Amount of Gain (Loss)			Amount of Gain (Loss)
Hedging Instruments		Location of Gain (Loss) Recognized in Income				Recognized in Income			Recognized in Income
						December 31, 2011			December 31, 2010
Foreign exchange contracts - forwards		Net foreign exchange gain/(loss)				$	951	$	(1,576		)
Total						$	951	$	(1,576		)

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Subsequent Events

12 Months Ended

Dec. 31, 2011

Subsequent Events [Abstract]

Subsequent Events

Note 16 – Subsequent events

We have evaluated subsequent events through the date the financial statements were issued.

     On January 24, 2012, our Board of Directors declared a quarterly cash dividend of $0.14 per common share, payable March 5, 2012, to stockholders of record on February 13, 2012.

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Segment Information

12 Months Ended

Dec. 31, 2011

Segment Information [Abstract]

Segment Information

Note 12 – Segment information

     We determine operating segments using the management approach. The management approach designates the internal organization that is used by management for making operating decisions and assessing performance as the source of our operating segments. It also requires disclosures about products and services, geographic areas and major customers.

     We have defined our operating segment based on geographic regions. We sell our products in three geographic regions. Our sales to these regions share similar economic characteristics, similar product mix, similar customers, and similar distribution methods. Accordingly, we have elected to aggregate these three geographic regions into a single operating segment. Revenue from the sale of our products which are similar in nature and software maintenance are reflected as total net sales in our Consolidated Statements of Income.

     Total net sales, operating income, interest income and long-lived assets, classified by the major geographic areas in which we operate, are as follows (in thousands):

		Years Ended December 31,
		2011			2010		2009
Net sales:
Americas	$	411,006	$	359,895		$	292,999
Europe		308,619			261,118		210,188
Asia Pacific		304,548			252,207		173,407
	$	1,024,173	$	873,220		$	676,594

		Years Ended December 31,
		2011				2010			2009
Operating income:
Americas	$	55,140			$	71,339		$	46,816
Europe		142,533				131,691			87,250
Asia Pacific		114,110				83,432			45,439
Unallocated:
Research and development expenses		(199,071	)		(158,149		)		(132,974	)
	$	112,712		$	128,313			$	46,531

		Years Ended December 31,
		2011		2010		2009
Interest income:
Americas	$	408	$	588	$	803
Europe		771		699		727
Asia Pacific		140		104		99
	$	1,319	$	1,391	$	1,629

		December 31,
	2011			2010
Long-lived assets:
Americas	$	110,153	$	103,033
Europe		47,000		40,083
Asia Pacific		32,995		17,294
	$	190,148	$	160,410

Total sales outside the U.S. for 2011, 2010 and 2009 were $645.7 million, $543.7 million and $412.7 million, respectively.

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Goodwill

12 Months Ended

Dec. 31, 2011

Goodwill [Abstract]

Goodwill

Note 8 – Goodwill

The carrying amount of goodwill for 2010 and 2011 are as follows:

		Amount
		(in thousands)
Balance as of December 31, 2009	$	64,779
Acquisitions/purchase accounting adjustments		6,061
Divestitures		0
Foreign currency translation impact		(562	)
Balance as of December 31, 2010	$	70,278
Acquisitions/purchase accounting adjustments		60,728
Divestitures		0
Foreign currency translation impact		(259	)
Balance as of December 31, 2011	$	130,747

     The excess purchase price over the fair value of assets acquired is recorded as goodwill. As we have one operating segment, we allocate goodwill to one reporting unit for goodwill impairment testing. Goodwill is tested for impairment on an annual basis, and between annual tests if indicators of potential impairment exist, using a fair-value-based approach based on the market capitalization of the reporting unit. Our annual impairment test was performed as of February 28, 2011. No impairment of goodwill was identified during 2011 and 2010. Goodwill is deductible for tax purposes in certain jurisdictions.

     See Note 15 – Acquisitions of Notes to Consolidated Financial Statements for additional discussion related to acquisitions in 2011.

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Income Taxes (Unrecognized Tax Benefit) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Income Taxes [Abstract]
Balance at beginning of period	$ 14,953	$ 11,062
Additions based on tax positions related to the current year	6,300	7,000
Additions for tax positions of prior years	1,908	440
Reductions as a result of settlement with taxing authorities	0	(1,141)
Reductions as a result of the lapse of the applicable statute of limitations	(3,667)	(2,408)
Balance at end of period	$ 19,494	$ 14,953

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Property And Equipment

12 Months Ended

Dec. 31, 2011

Property And Equipment [Abstract]

Property And Equipment

Note 6 – Property and equipment

Property and equipment at December 31, 2011 and 2010, consist of the following (in thousands):

		December 31,			December 31,
		2011			2010
Land	$	23,730		$	17,760
Buildings		156,317			142,037
Furniture and equipment		206,557			175,439
	$	386,604		$	335,236
Accumulated depreciation		(196,456	)		(174,826	)
	$	190,148		$	160,410

     Depreciation expense for the years ended December 31, 2011, 2010 and 2009, was $21.6 million, $21.0 million and $22.3 million, respectively.

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Intangibles

12 Months Ended

Dec. 31, 2011

Intangibles [Abstract]

Intangibles

Note 7 – Intangibles

Intangibles at December 31, 2011 and 2010 were as follows (in thousands):

				2011							2010
		Gross					Net		Gross					Net
		Carrying		Accumulated			Carrying		Carrying		Accumulated			Carrying
		Amount		Amortization			Amount		Amount		Amortization			Amount
Capitalized software development costs	$	53,086	$	(29,606	)	$	23,480	$	40,481	$	(16,217	)	$	24,264
Acquired technology		67,918		(32,210	)		35,708		35,634		(25,017	)		10,617
Patents		21,875		(7,992	)		13,883		20,790		(6,312	)		14,478
Other		24,614		(13,819	)		10,795		14,059		(10,602	)		3,457
	$	167,493	$	(83,627	)	$	83,866	$	110,964	$	(58,148	)	$	52,816

     Software development costs capitalized during 2011, 2010 and 2009 were $12.6 million, $16.5 million and $13.3 million, respectively, and related amortization was $13.4 million, $10.7 million and $9.1 million, respectively. Included in these capitalized costs for the years ended December 31, 2011, 2010 and 2009, were costs related to stock based compensation of $539,000, $719,000 and $734,000, respectively.

     Amortization of capitalized software development costs is computed on an individual product basis for those products available for market and is recognized based on the product's estimated economic life, generally three years. Acquired intangible assets which include acquired technology and other are amortized over their useful lives, which range from three to eight years. Patents are amortized using the straight-line method over their estimated period of benefit, generally ten to seventeen years. Total intangible assets amortization expenses were $25.5 million, $17.9 million and $16.5 million for the years ended December 31, 2011, 2010 and 2009, respectively.

     Capitalized software development costs, acquired technology, patents and other have weighted-average useful lives of 2.1 years, 2.6 years, 6.9 years, and 2.4 years, respectively, as of December 31, 2011. The estimated future amortization expense related to intangible assets as of December 31, 2011 is as follows:

		Amount
		(in thousands)
2012	$	26,635
2013		20,192
2014		13,953
2015		9,523
2016		5,172
Thereafter		8,391
	$	83,866

     The overall increase in our acquired technology and other intangible assets can be attributed to our acquisitions of AWR Corporation and Phase Matrix Inc. See Note 15 – Acquisitions of Notes to Consolidated Financial Statements for additional discussion related to these acquisitions.

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Income Taxes

12 Months Ended

Dec. 31, 2011

Income Taxes [Abstract]

Income Taxes

Note 9 – Income taxes

The components of income before income taxes are as follows (in thousands):

		Years Ended December 31,
		2011		2010		2009
Domestic	$	6,488	$	31,801	$	34,953
Foreign		104,646		96,311		15,292
	$	111,134	$	128,112	$	50,245

The provision for income taxes charged to operations is as follows (in thousands):

		Years Ended December 31,
		2011			2010			2009
Current tax expense:
U.S. federal	$	19,381		$	14,605		$	3,117
State		1,180			779			136
Foreign		8,568			3,752			13,760
Total current		29,129			19,136			17,013
Deferred tax expense (benefit):
U.S. federal		(12,790	)		1,545			9,920
State		(234	)		(39	)		387
Foreign		957			(1,646	)		(2,864	)
Total deferred		(12,067	)		(140	)		7,443
Change in valuation allowance		0			0			8,704
Total provision	$	17,062		$	18,996		$	33,160

Deferred tax liabilities (assets) at December 31, 2011 and 2010 as follows (in thousands):

		December 31,
		2011			2010
Capitalized software	$	7,933		$	8,029
Depreciation and amortization		16,910			12,468
Unrealized exchange gain		0			68
Unrealized gain on derivative instruments		105			0
Undistributed earnings of foreign subsidiaries		9,024			9,530
Gross deferred tax liabilities		33,972			30,095
Operating loss carryforwards		(61,148	)		(60,085	)
Intangible assets		(10,800	)		(32,462	)
Vacation and other accruals		(6,432	)		(5,010	)
Inventory valuation and warranty provisions		(10,724	)		(7,211	)
Doubtful accounts and sales provisions		(1,084	)		(1,001	)
Unrealized exchange loss		(33	)		0
Deferred revenue		(1,991	)		(1,487	)
Accrued rent expenses		(132	)		(84	)
Accrued legal expenses		0			0
GSA accrual		(4,831	)		0
Unrealized loss on derivative instruments		0			(474	)
10% minority stock investment		(915	)		(899	)
Stock-based compensation		(4,640	)		(4,577	)
Research and development tax credit carryforward		(4,562	)		(2,212	)
Foreign tax credit carryforward		(1,006	)		(983	)
Other		(518	)		(622	)
Gross deferred tax assets		(108,816	)		(117,107	)
Valuation allowance		79,864			90,602
Net deferred tax liability (asset)	$	5,020		$	3,590

A reconciliation of income taxes at the U.S. federal statutory income tax rate to our effective tax rate follows:

	Years Ended December 31,
	2011		2010		2009
U.S. federal statutory tax rate	35	%	35	%	35	%
Foreign taxes (less) than federal statutory rate	(7	)	(9	)	(6	)
Change in valuation allowance	0		0		17
Research and development tax credit	(3	)	(3	)	(4	)
Enhanced deduction for certain research and development expenses	(16	)	(10	)	0
State income taxes, net of federal tax benefit	1		1		1
Employee share-based compensation	1		0		7
Intercompany profit	3		1		15
Other	1		0		1
Effective tax rate	15	%	15	%	66	%

     As of December 31, 2011, we had a federal net operating loss carryforward of $2.5 million which expires during the years 2023 to 2030, and federal tax credit carryforwards of $5.6 million of which $3.2 million can be carried back one year and $2.4 million can be carried forward and expires during the years 2019 to 2029. Certain of these carryforwards are subject to limitations following a change in ownership.

     As of December 31, 2011, 15 of our subsidiaries had available, for income tax purposes, foreign net operating loss carryforwards of an aggregate of approximately $318.6 million, of which $5.1 million expire during the years 2014 to 2021 and $313.5 million of which may be carried forward indefinitely. Our tax valuation allowance relates primarily to our ability to realize certain of these foreign net operating loss carryforwards and benefits of tax deductible goodwill in excess of book goodwill.

     In 2003, we restructured the organization of our manufacturing operation in Hungary. The tax deductible goodwill in excess of book goodwill created by this restructuring resulted in our being required to record a gross deferred tax asset of $91.0 million. Because we did not expect to have sufficient taxable income in the relevant jurisdiction in future periods to realize the benefit of this deferred tax asset, a full valuation allowance was established. Following the approval of the merger of our Hungarian manufacturing operation with its Hungarian parent company in December 2007, we released $9.7 million, $8.7 million and $18.3 million in 2009, 2008 and 2007, respectively, of the valuation allowance previously established for the excess tax deductible goodwill to reflect the tax benefit we expected to realize in future periods.

     Effective January 1, 2010, a new tax law in Hungary provided for an enhanced deduction for the qualified research and development expenses of NI Hungary Software and Hardware Manufacturing Kft. ("NI Hungary"). During the three months ended December 31, 2009, we obtained confirmation of the application of this new tax law for the qualified research and development expenses of NI Hungary. Based on the application of this new tax law to the qualified research and development expense of NI Hungary, we no longer expect to have sufficient future taxable income in Hungary to realize the benefits of these tax assets. As such, we recorded an income tax charge of $21.6 million during the three months ended December 31, 2009, $18.4 million of which was related to a valuation allowance on the previously recognized assets created by the restructuring and $3.2 million of which was related to tax benefits from other assets that we will no longer be able to realize as a result of this change. We do not expect to realize the tax benefit of the remaining assets created by the restructuring and therefore we have a full valuation allowance of $79.8 million against those assets at December 31, 2011.

     We have not provided for U.S. federal income and foreign withholding taxes on approximately $432.5 million of certain non-U.S. subsidiaries' undistributed earnings as of December 31, 2011. These earnings would become subject to taxes of approximately $144.2 million, if they were actually or deemed to be remitted to the parent company as dividends or if we should sell our stock in these subsidiaries. We intend to permanently reinvest the undistributed earnings.

     We account for uncertainty in income taxes recognized in our financial statements using prescribed recognition thresholds and measurement attributes for financial statement disclosure of tax positions taken or expected to be taken on our tax returns. We recognized no material adjustment to the liability for unrecognized income tax benefits. A reconciliation of the beginning and ending amount of unrecognized tax benefit is as follows (in thousands):

		2011			2010
Balance at beginning of period	$	14,953		$	11,062
Additions based on tax positions related to the current year		6,300			7,000
Additions for tax positions of prior years		1,908			440
Reductions as a result of settlement with taxing authorities		0			(1,141	)
Reductions as a result of the lapse of the applicable statute of limitations		(3,667	)		(2,408	)
Balance at end of period	$	19,494		$	14,953

     All of our unrecognized tax benefits at December 31, 2011 would affect our effective income tax rate if recognized. As of December 31, 2011, it is deemed reasonably possible that the Company will recognize tax benefits in the amount of $2.2 million in the next twelve months due to the closing of open tax years. The nature of the uncertainty relates to deductions taken on returns that have not been examined by the applicable tax authority.

     We recognize interest and penalties related to income tax matters in income tax expense. During the years ended December 31, 2011 and 2010, we recognized interest expense related to uncertain tax positions of approximately $627,000 and $440,000, respectively. The tax years 2004 through 2011 remain open to examination by the major taxing jurisdictions in which we file income tax returns.

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Stockholders' Equity And Stock-Based Compensation (Schedule Of Options Outstanding And Exercisable By Price Range) (Details) (USD $)						12 Months Ended
	Dec. 31, 2011	Dec. 31, 2011 Stock Options [Member]	Dec. 31, 2010 Stock Options [Member]	Dec. 31, 2009 Stock Options [Member]	Dec. 31, 2008 Stock Options [Member]	Dec. 31, 2011 Stock Options [Member] $10.72 - $15.09 [Member]	Dec. 31, 2011 Stock Options [Member] $15.09 - $19.69 [Member]	Dec. 31, 2011 Stock Options [Member] $19.69 - $21.67 [Member]	Dec. 31, 2011 Stock Options [Member] $10.72 - $21.67 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise prices, Lower Limit						$ 10.72	$ 15.09	$ 19.69	$ 10.72
Range of Exercise prices, Upper Limit						$ 15.09	$ 19.69	$ 21.67	$ 21.67
Options Outstanding, Number		1,317,216	2,334,448	5,567,254	6,408,850	344,972	215,971	756,273	1,317,216
Options Outstanding, Weighted average remaining contractual life	2.0					1.90	1.42	2.23	2.01
Options Outstanding, Weighted average exercise price		$ 18.07	$ 17.15	$ 17.95	$ 17.31	$ 13.87	$ 18.20	$ 19.95	$ 18.07
Options Exercisable, Number		1,270,775	2,138,886	5,240,361		330,907	215,137	724,731	1,270,775
Options Exercisable, Weighted average exercise price		$ 18.06	$ 17.07	$ 17.96		$ 13.84	$ 18.19	$ 19.95	$ 18.06

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Stockholders' Equity And Stock-Based Compensation (Schedule Of Employee Stock Purchase Plan) (Details)	12 Months Ended
	Dec. 31, 2011 months	Dec. 31, 2010 months	Dec. 31, 2009 months
Stockholders' Equity And Stock-Based Compensation [Abstract]
Dividend expense yield	0.40%	0.40%	0.50%
Expected life (in months)	3	3	3
Expected volatility	44.00%	25.00%	45.00%
Risk-free interest rate	0.10%	0.10%	0.80%

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Stockholders' Equity And Stock-Based Compensation (Schedule Of Options Exercisable) (Details) (Stock Options [Member], USD $)	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares under option, Exercisable	1,270,775	2,138,886	5,240,361
Weighted average exercise price, Exercisable	$ 18.06	$ 17.07	$ 17.96

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Stockholders' Equity And Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2011

Stockholders' Equity And Stock-Based Compensation [Abstract]

Schedule Of Stock Option Plans

				Weighted
	Number of			average
	shares under			exercise
	option			price
Outstanding at December 31, 2008	6,408,850		$	17.31
Exercised	(569,445	)	$	10.27
Canceled	(272,151	)	$	17.87
Granted	0			0
Outstanding at December 31, 2009	5,567,254		$	17.95
Exercised	(2,291,757	)	$	17.55
Canceled	(941,049	)	$	20.93
Granted	0			0
Outstanding at December 31, 2010	2,334,448		$	17.15
Exercised	(932,895	)	$	29.31
Canceled	(84,337	)	$	16.23
Granted	0			0
Outstanding at December 31, 2011	1,317,216		$	18.07

Schedule Of Options Exercisable

Options exercisable at December 31:
2009	5,240,361	$	17.96
2010	2,138,886	$	17.07
2011	1,270,775	$	18.06

Schedule Of Options Outstanding And Exercisable By Price Range

			Outstanding and Exercisable by Price Range as of December 31, 2011
			Options Outstanding			Options Exercisable
		Number outstanding as	Weighted average		Weighted average	Number exercisable		Weighted average
	Range of Exercise prices	of 12/31/2011	remaining contractual life		exercise price	as of 12/31/2011		exercise price
$	10.72– $15.09	344,972	1.90	$	13.87	330,907	$	13.84
$	15.09– $19.69	215,971	1.42	$	18.20	215,137	$	18.19
$	19.69– $21.67	756,273	2.23	$	19.95	724,731	$	19.95
$	10.72– $21.67	1,317,216	2.01	$	18.07	1,270,775	$	18.06

Schedule Of Restricted Stock Plans

			RSUs
					Weighted Average
	Number of RSUs				Grant Price
Balance at December 31, 2008	3,247,842			$	17.99
Granted	906,124			$	14.53
Earned	(610,734	)		$	14.69
Canceled	(86,581	)		$	18.59
Balance at December 31, 2009	3,456,651			$	17.65
Granted	294,030			$	22.60
Earned	(680,188	)		$	23.05
Canceled	(74,196	)		$	18.47
Balance at December 31, 2010	2,996,297			$	17.97
Granted	1,370,666			$	30.14
Earned	(860,598	)		$	30.30
Canceled	(84,843	)		$	20.82
Balance at December 31, 2011	3,421,522			$	22.75

Schedule Of Employee Stock Purchase Plan

	2011		2010		2009
Dividend expense yield	0.4	%	0.4	%	0.5	%
Expected life	3 months		3 months		3 months
Expected volatility	44	%	25	%	45	%
Risk-free interest rate	0.1	%	0.1	%	0.8	%

Schedule Of Weighted Average Grant Date Fair Value Of Purchase Rights Granted Under Employee Stock Purchase Plan

			Weighted
	Number		average
	of shares		fair value
2009	1,257,804	$	3.83
2010	1,011,765	$	4.35
2011	940,703	$	6.56

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Intangibles (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Finite-Lived Intangible Assets [Line Items]
Total amortization expenses	$ 25,500,000	$ 17,900,000	$ 16,500,000
Capitalized Software Development Costs [Member]
Finite-Lived Intangible Assets [Line Items]
Capitalized software development costs	12,600,000	16,500,000	13,300,000
Capitalized computer software amortization	13,400,000	10,700,000	9,100,000
Costs related to stock based compensation	$ 539,000	$ 719,000	$ 734,000
Useful life (in years)	3
Weighted-average useful lives (in years)	2.1
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Useful life, minimum (in years)	10
Useful life, maximum (in years)	17
Weighted-average useful lives (in years)	6.9
Acquired Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted-average useful lives (in years)	2.6
Other Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted-average useful lives (in years)	2.4
Other Assets [Member] | Acquired Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Useful life, minimum (in years)	3
Useful life, maximum (in years)	8

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Litigation

12 Months Ended

Dec. 31, 2011

Litigation [Abstract]

Litigation

Note 14 – Litigation

     We are not currently a party to any material litigation. However, in the ordinary course of our business, we are involved in legal actions, both as plaintiff and defendant, and could incur uninsured liability in any one or more of them. We also periodically receive notifications from various third parties related to alleged infringement of patents or intellectual property rights, commercial disputes or other matters. See Note 13 – Commitments and Contingencies in the Notes to our Consolidated Financial Statements, for discussion of the accrual we have recorded in connection with our previous GSA contract. No assurances can be given with respect to the extent or outcome of any future litigation or dispute.

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Cash, Cash Equivalents And Short-Term Investments (Tables)

12 Months Ended

Dec. 31, 2011

Cash, Cash Equivalents And Short-Term Investments [Abstract]

Unrealized Gains And Losses Related To Short-Term Investments Designated As Available-For-Sale

						As of December 31, 2011
				Gross		Gross			Cumulative
		Adjusted		Unrealized		Unrealized			Translation
		Cost		Gain		Loss			Adjustment			Fair Value
Cash	$	106,431	$	0	$	0		$	0		$	106,431
Money market accounts		22,677		0		0			0			22,677
Municipal bonds		12,381		11		0			0			12,392
Corporate bonds		18,631		0		(67	)		0			18,564
U.S. treasuries and agencies		170,926		2		(9	)		0			170,919
Foreign government bonds		36,460		240		(1	)		(4,482	)		32,217
Time deposits		2,912		0		0			0			2,912
Cash, Cash equivalents and short-term
investments	$	370,418	$	253	$	(77	)	$	(4,482	)	$	366,112
						As of December 31, 2010
				Gross		Gross			Cumulative
		Adjusted		Unrealized		Unrealized			Translation
		Cost		Gain		Loss			Adjustment			Fair Value
Cash	$	86,344	$	0	$	0		$	0		$	86,344
Money market accounts		133,103		0		0			0			133,103
Municipal bonds		16,843		18		0			0			16,861
Corporate bonds		56,141		38		(69	)		0			56,110
U.S. treasuries and agencies		23,142		13		(20	)		0			23,135
Foreign government bonds		36,010		89		(32	)		(3,410	)		32,657
Time deposits		2,452		0		0			0			2,452
Cash, Cash equivalents and short-term
investments	$	354,035	$	158	$	(121	)	$	(3,410	)	$	350,662

Contractual Maturities Of Short-Term Investments Designated As Available-For-Sale

		As of December 31, 2011
		Adjusted Cost		Fair Value
Due in less than 1 year	$	215,817	$	213,618
Due in 1 to 5 years		25,493		23,386
Total available-for-sale debt securities	$	241,310	$	237,004
Due in less than 1 year		Adjusted Cost		Fair Value
Municipal bonds	$	12,381	$	12,392
Corporate bonds		14,435		14,392
U.S. treasuries and agencies		167,924		167,917
Foreign government bonds		18,165		16,005
Time deposits		2,912		2,912
Total available-for-sale debt securities	$	215,817	$	213,618
Due in 1 to 5 years		Adjusted Cost		Fair Value
Corporate bonds	$	4,196	$	4,172
U.S. treasuries and agencies		3,002		3,002
Foreign government bonds		18,295		16,212
Total available-for-sale debt securities	$	25,493	$	23,386

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Inventories (Summary Of Inventories) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Inventories [Abstract]
Raw materials	$ 56,139	$ 55,218
Work-in-process	5,708	6,359
Finished goods	70,148	56,188
Inventories, net	$ 131,995	$ 117,765

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Operations And Summary Of Significant Accounting Policies (Schedule Of Warranty Reserve) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Operations And Summary Of Significant Accounting Policies [Abstract]
Warranty reserve, Balance at the beginning of the period	$ 921	$ 921	$ 952
Accruals for warranties issued during the period	2,954	1,993	1,991
Settlements made (in cash or in kind) during the period	(2,604)	(1,993)	(2,022)
Warranty reserve, Balance at the end of the period	$ 1,271	$ 921	$ 921

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Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Cash flow from operating activities:
Net income	$ 94,072	$ 109,116	$ 17,085
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	49,897	37,872	38,365
Stock-based compensation	23,219	18,795	20,299
Tax expense (benefit) from deferred income taxes	(8,581)	3,668	17,196
Tax expense (benefit) from stock option plans	(5,151)	(96)	1,450
Changes in operating assets and liabilities:
Accounts receivable	(21,957)	(22,923)	17,591
Inventories	(11,817)	(30,930)	20,843
Prepaid expenses and other assets	(1,350)	(20,411)	12,740
Accounts payable	5,573	9,630	(7,374)
Deferred revenue	16,953	14,408	11,728
Taxes and other liabilities	29,041	25,929	(14,272)
Net cash provided by operating activities	169,899	145,058	135,651
Cash flow from investing activities:
Capital expenditures	(54,830)	(28,397)	(20,847)
Capitalization of internally developed software	(12,065)	(15,759)	(12,583)
Additions to other intangibles	(5,035)	(4,151)	(4,602)
Acquisitions, net of cash received	(73,558)	(4,218)	0
Purchases of short-term investments	(257,449)	(126,691)	(93,087)
Sales and maturities of short-term investments	166,104	82,672	19,204
Net cash (used by) investing activities	(236,833)	(96,544)	(111,915)
Cash flow from financing activities:
Proceeds from issuance of common stock	32,905	51,852	21,672
Repurchase of common stock	0	(41,862)	(34,585)
Dividends paid	(47,961)	(40,618)	(37,308)
Tax (expense) benefit from stock option plans	5,151	96	(1,450)
Net cash (used by) financing activities	(9,905)	(30,532)	(51,671)
Net change in cash and cash equivalents	(76,839)	17,982	(27,935)
Cash and cash equivalents at beginning of period	219,447	201,465	229,400
Cash and cash equivalents at end of period	142,608	219,447	201,465
Cash paid for interest and income taxes:
Interest	14	82	23
Income taxes	$ 2,393	$ 14,807	$ 14,608

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Fair Value Measurements

12 Months Ended

Dec. 31, 2011

Fair Value Measurements [Abstract]

Fair Value Measurements

Note 3 – Fair value measurements

     We define fair value to be the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. When determining the fair value measurements for assets and liabilities required or permitted to be recorded at fair value, we consider the principal or most liquid market and assumptions that market participants would use when pricing the asset or liability.

     We follow a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value into three broad levels. The level in the fair value hierarchy within which the fair value measurement falls is determined based on the lowest level input that is significant to the fair value measurement. The three values of the fair value hierarchy are the following:

Level 1 – Quoted prices in active markets for identical assets or liabilities

Level 2 – Inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly

Level 3 – Inputs that are not based on observable market data

Assets and liabilities measured at fair value on a recurring basis are summarized below (in thousands):

					Fair Value Measurements at Reporting Date Using
					Quoted Prices in
					Active Markets for	Significant Other				Significant
					Identical Assets	Observable Inputs				Unobservable Inputs
Description		December 31, 2011			(Level 1)		(Level 2)			(Level 3)
Assets
Money Market Funds	$	22,677		$	22,677	$	0		$	0
U.S. Treasuries and Agencies		13,500					13,500
Short-term investments available for
sale:
Municipal bonds		12,392			0		12,392			0
Corporate bonds		18,564			0		18,564			0
U.S. treasuries and agencies		157,419			0		157,419			0
Foreign government bonds		32,217			0		32,217			0
Time deposits		2,912			2,912		0			0
Derivatives		4,297			0		4,297			0
Total Assets	$	263,978		$	25,589	$	238,389		$	0
Liabilities
Derivatives	$	(4,542	)	$	0	$	(4,542	)	$	0
Total Liabilities	$	(4,542	)	$	0	$	(4,542	)	$	0
					Fair Value Measurements at Reporting Date Using
					Quoted Prices in
					Active Markets for	Significant Other				Significant
					Identical Assets	Observable Inputs				Unobservable Inputs
Description		December 31, 2010			(Level 1)		(Level 2)			(Level 3)
Assets
Money Market Funds	$	133,103		$	133,103	$	0		$	0
Short-term investments available for
sale:
Municipal bonds		16,861			0		16,861			0
Corporate bonds		56,110			0		56,110			0
U.S. treasuries and agencies		23,135			0		23,135			0
Foreign government bonds		32,657			0		32,657			0
Time deposits		2,452			2,452		0			0
Derivatives		2,325			0		2,325			0
Total Assets	$	266,643		$	135,555	$	131,088		$	0
Liabilities
Derivatives	$	(3,733	)	$	0	$	(3,733	)	$	0
Total Liabilities	$	(3,733	)	$	0	$	(3,733	)	$	0

     We value our available-for-sale short term investments based on pricing from third party pricing vendors, who may use quoted prices in active markets for identical assets (Level 1 inputs) or inputs other than quoted prices that are observable either directly or indirectly (Level 2 inputs) in determining fair value. We classify all of our fixed income available-for-sale securities as having Level 2 inputs. The valuation techniques used to measure the fair value of our financial instruments having Level 2 inputs were derived from non-binding market consensus prices that are corroborated by observable market data, quoted market prices for similar instruments, or pricing models, such as discounted cash flow techniques. We believe all of these sources reflect the credit risk associated with each of our available for sale short term investments. Short-term investments available-for-sale consists of debt securities issued by states of the U.S. and political subdivisions of the U.S., corporate debt securities and debt securities issued by U.S. government corporations and agencies as well as debt securities issued by foreign governments. All short-term investments available-for-sale have contractual maturities of less than 24 months.

     Derivatives include foreign currency forward and option contracts. Our foreign currency forward contracts are valued using an income approach (Level 2) based on the spot rate less the contract rate multiplied by the notional amount. Our foreign currency option contracts are valued using a market approach based on the quoted market prices which are derived from observable inputs including current and future spot rates, interest rate spreads as well as quoted market prices of similar instruments. We consider counterparty credit risk in the valuation of our derivatives. Counterparty credit risk did not impact the valuation of our derivatives at December 31, 2011 and 2010. There were not any transfers in or out of Level 1 or Level 2 during the year ended December 31, 2011.

     We previously reported certain of our cash equivalents and short-term investments available-for-sale as using Level 1 market inputs. We have determined that the pricing methods for certain of these investments use significant other observable inputs and should have been reported as Level 2. Accordingly, these investments held in prior periods are now reported as Level 2. This change had no impact on the fair value of our investments in any of the periods presented.

     We did not have any items that were measured at fair value on a nonrecurring basis at December 31, 2011 and December 31, 2010.

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Income Taxes (Deferred Tax Liabilities (Assets) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Income Taxes [Abstract]
Capitalized software	$ 7,933	$ 8,029
Depreciation and amortization	16,910	12,468
Unrealized exchange gain	0	68
Unrealized gain on derivative instruments	105	0
Undistributed earnings of foreign subsidiaries	9,024	9,530
Gross deferred tax liabilities	33,972	30,095
Operating loss carryforwards	(61,148)	(60,085)
Intangible assets	(10,800)	(32,462)
Vacation and other accruals	(6,432)	(5,010)
Inventory valuation and warranty provisions	(10,724)	(7,211)
Doubtful accounts and sales provisions	(1,084)	(1,001)
Unrealized exchange loss	(33)	0
Deferred revenue	(1,991)	(1,487)
Accrued rent expenses	(132)	(84)
Accrued legal expense	0	0
GSA Accrual	(4,831)	0
Unrealized loss on derivative instruments	0	(474)
10% minority stock investment	(915)	(899)
Deferred tax assets stock-based compensation	(4,640)	(4,577)
Research and development tax credit carryforward	(4,562)	(2,212)
Foreign tax credit carryforward	(1,006)	(983)
Other	(518)	(622)
Gross deferred tax assets	(108,816)	(117,107)
Valuation allowance	79,864	90,602
Net deferred tax liability (asset)	$ 5,020	$ 3,590

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Segment Information (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Segment Information [Abstract]
Number of geographic regions	3
Total sales outside the United States	$ 645.7	$ 543.7	$ 412.7

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Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2011

Fair Value Measurements [Abstract]

Assets And Liabilities Measured On Recurring Basis

					Fair Value Measurements at Reporting Date Using
					Quoted Prices in
					Active Markets for	Significant Other				Significant
					Identical Assets	Observable Inputs				Unobservable Inputs
Description		December 31, 2011			(Level 1)		(Level 2)			(Level 3)
Assets
Money Market Funds	$	22,677		$	22,677	$	0		$	0
U.S. Treasuries and Agencies		13,500					13,500
Short-term investments available for
sale:
Municipal bonds		12,392			0		12,392			0
Corporate bonds		18,564			0		18,564			0
U.S. treasuries and agencies		157,419			0		157,419			0
Foreign government bonds		32,217			0		32,217			0
Time deposits		2,912			2,912		0			0
Derivatives		4,297			0		4,297			0
Total Assets	$	263,978		$	25,589	$	238,389		$	0
Liabilities
Derivatives	$	(4,542	)	$	0	$	(4,542	)	$	0
Total Liabilities	$	(4,542	)	$	0	$	(4,542	)	$	0
					Fair Value Measurements at Reporting Date Using
					Quoted Prices in
					Active Markets for	Significant Other				Significant
					Identical Assets	Observable Inputs				Unobservable Inputs
Description		December 31, 2010			(Level 1)		(Level 2)			(Level 3)
Assets
Money Market Funds	$	133,103		$	133,103	$	0		$	0
Short-term investments available for
sale:
Municipal bonds		16,861			0		16,861			0
Corporate bonds		56,110			0		56,110			0
U.S. treasuries and agencies		23,135			0		23,135			0
Foreign government bonds		32,657			0		32,657			0
Time deposits		2,452			2,452		0			0
Derivatives		2,325			0		2,325			0
Total Assets	$	266,643		$	135,555	$	131,088		$	0
Liabilities
Derivatives	$	(3,733	)	$	0	$	(3,733	)	$	0
Total Liabilities	$	(3,733	)	$	0	$	(3,733	)	$	0

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Commitments, Contingencies And Leases (Narrative) (Details) (USD $)	3 Months Ended	12 Months Ended
	Sep. 30, 2011	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Commitments, Contingencies And Leases [Abstract]
Rent expense under operating leases		$ 16,300,000	$ 13,500,000	$ 12,300,000
Amount of non-cancelable purchase commitments with various suppliers of customized inventory and inventory components		13,700,000
Amount of guarantees for payment of customs and foreign grants		4,800,000
Percentage of sales to U.S. government under contract		2.00%
GSA Accrual	$ 13,100,000	$ 13,107,000	$ 0	$ 0

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Operations And Summary Of Significant Accounting Policies (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2011 years days	Dec. 31, 2010	Dec. 31, 2009	Jan. 21, 2011	Dec. 31, 2008
Summary Of Significant Accounting Policies [Line Items]
Fair value of short-term investments in debt securities	$ 223,504,000	$ 131,215,000
German government sovereign debt, in USD	32,000,000
Net purchase of short-term investments	91,000,000
Net of allowances for sales returns	1,600,000	1,700,000
Net of allowances for doubtful accounts	2,600,000	2,100,000
Inventory, net of adjustment for excess and obsolete inventories	4,200,000	3,300,000	4,400,000
Intangible assets estimated economic life	3
Goodwill impairment	0	0
Number of operating segments	1
Cash and cash equivalents	142,608,000	219,447,000	201,465,000		229,400,000
Investment policy for marketable securities	Our investment policy for marketable securities requires that all securities mature in three years or less, with a weighted average maturity of no longer than 18 months with at least 10% maturing in 90 days or less.
Percentage of sales to any individual customer to total revenue	4.00%
Largest trade account receivable from any individual customer	4,900,000
Licensing and sales arrangement payment term, minimum (in days)	30
Licensing and sales arrangement payment term, maximum (in days)	90
Maximum period of return after delivering of product (in days)	30
Warranty on products, minimum (in days)	90
Warranty on Products, maximum (in years)	3
Percentage of hardware and software in product/license	86.00%
Deferred revenue	90,074,000	71,650,000
Service period of undelivered element (in months)	12
Advertising expense	14,700,000	13,200,000	13,600,000
Anti-dilutive securities excluded from the computation of diluted EPS	477,019	322,896	4,067,964
Stock split, conversion ratio				3:2
Date of stock split declared	January 21, 2011
Comprehensive income	91,282,000	94,861,000	20,147,000
Money Market Accounts [Member]
Summary Of Significant Accounting Policies [Line Items]
Cash and cash equivalents	22,700,000
Percentage of cash and cash equivalents	16.00%
Domestic Operating Account [Member]
Summary Of Significant Accounting Policies [Line Items]
Cash and cash equivalents	8,100,000
Percentage of cash and cash equivalents	6.00%
Domestic Financial Institutions [Member]
Summary Of Significant Accounting Policies [Line Items]
Cash and cash equivalents	37,100,000
Percentage of cash and cash equivalents	26.00%
Non U.S. Financial Institutions [Member]
Summary Of Significant Accounting Policies [Line Items]
Cash and cash equivalents	105,500,000
Percentage of cash and cash equivalents	74.00%
Foreign Government Bonds [Member]
Summary Of Significant Accounting Policies [Line Items]
Fair value of short-term investments in debt securities	32,200,000
Percentage of short-term investments	14.00%
U.S. Treasuries And Agencies [Member]
Summary Of Significant Accounting Policies [Line Items]
Fair value of short-term investments in debt securities	157,400,000
Cash and cash equivalents	13,500,000
Percentage of cash and cash equivalents	9.00%
Percentage of short-term investments	70.00%
Municipal Bonds [Member]
Summary Of Significant Accounting Policies [Line Items]
Fair value of short-term investments in debt securities	12,400,000
Percentage of short-term investments	6.00%
Corporate Bonds [Member]
Summary Of Significant Accounting Policies [Line Items]
Fair value of short-term investments in debt securities	18,600,000
Percentage of short-term investments	8.00%
Time Deposits [Member]
Summary Of Significant Accounting Policies [Line Items]
Fair value of short-term investments in debt securities	2,900,000
Percentage of short-term investments	1.00%
Buildings [Member]
Summary Of Significant Accounting Policies [Line Items]
Property and equipment estimated useful life, minimum (years)	20
Property and equipment estimated useful life, maximum (years)	40
Software [Member]
Summary Of Significant Accounting Policies [Line Items]
Property and equipment estimated useful life, minimum (years)	3
Property and equipment estimated useful life, maximum (years)	7
Equipment [Member]
Summary Of Significant Accounting Policies [Line Items]
Property and equipment estimated useful life, minimum (years)	3
Property and equipment estimated useful life, maximum (years)	7
Most Hardware Products [Member]
Summary Of Significant Accounting Policies [Line Items]
Limited warranty on most hardware products (in years)	1
Subset Of Hardware Products [Member]
Summary Of Significant Accounting Policies [Line Items]
Limited warranty, minimum term (in years)	2
Limited warranty, maximum term (in years)	3
Cash [Member]
Summary Of Significant Accounting Policies [Line Items]
Cash and cash equivalents	$ 106,400,000
Percentage of cash and cash equivalents	75.00%
Patents [Member]
Summary Of Significant Accounting Policies [Line Items]
Intangible asset useful life, minimum (in years)	10
Intangible asset useful life, maximum (in years)	17

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Commitments, Contingencies And Leases

12 Months Ended

Dec. 31, 2011

Commitments, Contingencies And Leases [Abstract]

Commitments, Contingencies And Leases

Note 13 – Commitments, contingencies and leases

     We have commitments under non-cancelable operating leases primarily for office facilities throughout the world. Certain leases require us to pay property taxes, insurance and routine maintenance, and include escalation clauses. Future minimum lease payments as of December 31, 2011, for each of the next five years are as follows (in thousands):

2012	$	14,426
2013		10,252
2014		8,747
2015		7,707
2016		4,857
Thereafter		8,321
	$	54,310

     Rent expense under operating leases was approximately $16.3 million, $13.5 million and $12.3 million for the years ended December 31, 2011, 2010 and 2009, respectively.

     As of December 31, 2011, we have non-cancelable purchase commitments with various suppliers of customized inventory and inventory components totaling approximately $13.7 million over the next twelve months.

     As of December 31, 2011, we have outstanding guarantees for payment of customs and foreign grants totaling approximately $4.8 million, which are generally payable over the next twelve months.

     From November 1999 to May 2011, we sold products to the U.S. government under a contract with the General Services Administration ("GSA"). During such time, our sales under the contract were approximately 2% of our total sales. Our previous contract with GSA contained a price reduction or "most favored customer" pricing provision. For the past several months, we have been in discussions with GSA regarding our compliance with this pricing provision and have provided GSA with information regarding our pricing practices. GSA conducted an on-site review of our GSA pricing practices and orally informed us that GSA did not agree with our previous determination of the potential non-compliance amount. GSA subsequently requested that we conduct a further analysis of the non-compliance amount based upon a methodology that GSA proposed. This analysis resulted in calculated overpayments (including added interest) by GSA to us of approximately $13.1 million. GSA is reviewing the analysis and has not yet officially responded, and has not made any formal demand for pricing adjustments related to our previous GSA contract. However, GSA may make such a demand in the future, and there can be no assurance that the amount of any such demand, if we were required to pay it, would not have a material adverse impact on our results of operations. If GSA believes that our pricing practices did not comply with the contract, GSA could conduct a formal investigation of such matter or could refer such matter to the U.S. Department of Justice for investigation, including an investigation regarding potential violations of the False Claims Act, which could result in litigation and the possible imposition of a damage remedy that includes treble damages plus civil penalties, and could also result in us being suspended or debarred from future government contracting. As a result of the foregoing, during the quarter ended September 30, 2011, we established an accrual of $13.1 million which represents the amount of the loss contingency that is reasonably estimable at this time. There can be no assurance that our actual losses will not exceed such reserve amount. Due to the complexities of conducting business with GSA, the relatively small amount of revenue we realized from our previous GSA contract, and our belief that we can continue to sell our products to U.S. government agencies through other contracting methods, we cancelled our contract with GSA in April 2011, effective May 2011. To date, we have not experienced any material adverse impact on our results of operations as a result of the cancellation of our previous GSA contract.