10-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 10-K

R	ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
	For the fiscal year ended April 30, 2013
OR
o	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 01-34443

FLOW INTERNATIONAL CORPORATION

(Exact name of registrant as specified in its charter)

Washington	91-1104842
(State or other jurisdiction of  incorporation or organization)	(I.R.S. Employer  Identification No.)
23500 64th Avenue South, Kent, WA	98032
(Address of principle executive offices)	(Zip Code)
Registrant's telephone number, including area code 253-850-3500
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, Common Share Purchase Rights	NASDAQ Global Market
Securities registered pursuant to Section 12(g) of the Act: None

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

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 R

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 R      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 R      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 the 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 o Accelerated filer R Non-accelerated filer o Smaller reporting company o

(Do not check if a smaller reporting company)

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

The aggregate market value of the registrant's common stock held by non-affiliates of the registrant was approximately $152,261,857 as of October 31, 2012, the last business day of the registrant's most recently completed second fiscal quarter, based on a closing price of $3.32 per share as quoted by the NASDAQ Stock Market as of such date. The determination of affiliate status is not necessarily a conclusive determination for other purposes.

The registrant had 48,785,906 shares of Common Stock, $0.01 par value per share, outstanding as of July 23, 2013.

DOCUMENTS INCORPORATED BY REFERENCE

The registrant intends to file a definitive proxy statement pursuant to Regulation 14A within 120 days of the end of the fiscal year ended April 30, 2013 (the “2013 Proxy Statement”). Portions of such proxy statement are incorporated by reference into Part III of this Form 10-K. With the exception of such portions of the 2013 Proxy Statement expressly incorporated by into this Annual Report on Form 10-K by reference, such document shall not be deemed filed as part of this Annual Report on Form 10-K.

FLOW INTERNATIONAL CORPORATION

INDEX

			Page
PART I:
	Item 1	Business		5
	Item 1A	Risk Factors		10
	Item 1B	Unresolved Staff Comments		15
	Item 2	Properties		15
	Item 3	Legal Proceedings		17
	Item 4	Mine Safety Disclosures		17
PART II:
	Item 5	Market for Registrant's Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities		17
	Item 6	Selected Financial Data		19
	Item 7	Management's Discussion and Analysis of Financial Condition and Results of Operations		20
	Item 7A	Quantitative and Qualitative Disclosures About Market Risk		35
	Item 8	Financial Statements and Supplementary Data		36
	Item 9	Changes in and Disagreements with Accountants on Accounting and Financial Disclosure		65
	Item 9A	Controls and Procedures		65
	Item 9B	Other Information		69
PART III:
	Item 10	Directors, Executive Officers and Corporate Governance		69
	Item 11	Executive Compensation		69
	Item 12	Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters		69
	Item 13	Certain Relationships and Related Transactions, and Director Independence		69
	Item 14	Principal Accounting Fees and Services		69
PART IV:
	Item 15	Exhibits, Financial Statement Schedules		69
EX-21.1
EX-23.1
EX-31.1
EX-31.2
EX-32.1
EX-99.1

Forward-Looking Statements

Forward-looking statements in this report, including without limitation, statements relating to our plans, strategies, objectives, expectations, intentions, and adequacy of resources, are made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. The words "may," "expect," "believe," "anticipate," "estimate," "plan" and similar expressions are intended to identify forward-looking statements. These statements are no guarantee of future performance and involve certain risks, assumptions, and uncertainties that are difficult to predict. Therefore, actual outcome and results may differ materially from what is expressed or forecasted in such forward-looking statements.

We make forward-looking statements of our expectations which include but are not limited to the following examples:

• statements regarding the effects of global financial and economic conditions, credit and equity market volatility and continued fluctuations in the global economy and the impact this may have on our business and financial condition;

• statements regarding our belief that the diversity of our products and geographic presence along with the expansion of our indirect sales channel will continue to minimize the impact that any one country or economy has on our consolidated results;

• statements regarding our technological leadership position and our belief that our technological capabilities for developing products with superior characteristics provide us potential growth opportunities as well as a competitive advantage;

• statements regarding our belief that we offer the broadest product line and provide a superior product at every price point;

• statements regarding our continued investments in lead generation, product enhancements, new product development and in our employees which we believe are critical to achieving our strategic objectives;

• statements regarding our belief that we are well positioned to continue growing our business organically over the long-term by enhancing our product offerings and expanding our customer base through our global channels of distribution;

• statements regarding our expectation that our new products will have strong contributions to our results in fiscal year 2014 and beyond;

• statements regarding our recently implemented plans to achieve approximately $13 million in annualized cost reductions, which includes targeted plans to reduce product costs and lower operating expenses, with the full annualized run rate of savings in place by the end of fiscal year 2014;

• statements regarding our ability to mitigate the risk of higher commodity and fuel prices;

• statements regarding our belief that our channels of distribution are unparalleled in our industry and our ability to effectively manage them;

• statements regarding the reasons for variations in our segment revenues and gross margins;

• statements regarding our use of cash, cash needs, generation of cash through operations, and ability to raise capital and/or use our Credit Facility;

• statements regarding our belief that our existing cash and cash equivalents, along with the expected proceeds from our operations and available amounts under our Credit Facility, will provide adequate liquidity to fund our operations through at least the next twelve months;

• statements regarding our ability to fund future capital spending through cash from operations and/or from external financing;

• statements regarding our ability to repay our subordinated notes in future periods;

• statements regarding our ability to meet our debt covenants in future periods;

• statements regarding anticipated results of potential or actual litigation;

• statements regarding our review of strategic alternatives to enhance shareholder value, including, among other things, the potential sale of the Company or other transaction;

• statements regarding our belief that the we have been issuing restricted stock pursuant to our 2005 Equity Incentive Plan ("2005 Plan") under an exemption from registration under the 1933 Act, and our plan to file a registration statement on Form S-8 subsequent to filing this annual report on Form 10-K to register future exercises of stock options and future issuances of securities under the 2005 Plan; and

• statements regarding the realizability of our deferred tax assets and our expectation that our unrecognized tax benefits will not change significantly within the next twelve months.

There may be other factors not mentioned above or included in our SEC filings that may cause our actual results to differ materially from those in any forward-looking statement. You should not place undue reliance on these forward-looking

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statements. We assume no obligation to update any forward-looking statements as a result of new information, future events or developments, except as required by federal securities laws.

PART I

Item 1. Business

General Business Overview

Flow International Corporation and its subsidiaries (hereinafter collectively referred to as “the Company”, “we”, or “our” unless the context requires otherwise) is a global technology-based manufacturing company committed to providing a world class customer experience. We offer technological leadership and exceptional waterjet performance to a wide-ranging customer base, benefiting many cutting and surface preparation applications, delivering profitable waterjet solutions, and dynamic business growth opportunities to our customers. Our ultrahigh-pressure water pumps generate pressures from 40,000 to over 94,000 pounds per square inch (psi) and power waterjet systems that are used to cut materials, remove coatings, and prepare surfaces for coating. Waterjet cutting and cleaning is a fast-growing alternative to traditional methods, such as lasers, saws, knives, shears, plasma, electrical discharge machining ("EDM"), routers, drills, soda blasting and abrasive blasting techniques, and has uses in many applications from food and paper products to steel and carbon fiber composites.

This portion of our Form 10-K provides detailed information about who we are and what we do. Unless otherwise specified, current information reported in this Form 10-K is as of, or for the fiscal year ended April 30, 2013.

Business Segments

We report our operating results to our Chief Executive Officer, who is the chief operating decision maker, based on market segments which is consistent with management's long-term growth strategy. Our reportable segments are Standard and Advanced. Segment results are measured based on revenue growth and gross margin.

Standard segment. Includes sales and cost of sales related to our cutting, surface preparation and cleaning systems using ultrahigh-pressure water pumps as well as parts and services to sustain these installed systems. Systems included in this segment do not require significant custom configuration.

Advanced segment. Includes sales and cost of sales related to our complex aerospace and automation systems which require specific custom configuration and advanced features, including robotics, to match unique customer applications.

Financial information about our segments is included in Note 14 -Business Segments and Geographic Information of the Notes to the Consolidated Financial Statements included in Item 8, Financial Statements and Supplementary Data.

Products and Services

Our mission is to provide the highest value customer-driven waterjet cutting and surface preparation solutions. We strive to improve our customers' profitability through the development of innovative products and services that expand our customers' markets and increase their productivity.

The primary components of our product line include versatile waterjet cutting and surface preparation systems which provide total system solutions for many materials including metal, stone, tile, composites, food, paper, rubber, structural foam and many more. We have a wide variety of customer types ranging from small job shops to major industrial companies.

Our ultrahigh-pressure technology has two broad applications: cutting and surface preparation.

Waterjet Cutting.  The primary application of our ultrahigh-pressure water pumps is cutting. In cutting applications, ultra high-pressure pumps rated from 40,000 to 94,000 psi pressurize water and force it through a small orifice, generating a stream of water traveling at supersonic speeds. In order to cut metallic and other hard materials, an abrasive substance, such as garnet, is added to the waterjet stream creating an abrasive jet. Our cutting systems typically include a robotic manipulator that moves the cutting head, either 2-dimensionally or 3-dimensionally. Our systems may also combine waterjet with other applications such as material handling, conventional machining, routing inspection, assembly, and other automated processes. Our waterjet cutting systems cut virtually any shape in a single step with edge quality free of heat or mechanical stress and that usually requires no secondary finishing. Waterjets are proven to be very productive solutions for cutting a wide range of materials from 1/32 inch to over 24 inches thick. We offer two different pump technologies: ultrahigh-pressure intensifier and direct drive

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pumps, ensuring our customers get the pump that is right for them and their unique application. Our intensifier pumps can deliver water continuously at up to 87,000 psi, and our direct drive pumps up to 55,000 psi.

Waterjet cutting is recognized as a more flexible, cost effective and accurate alternative to traditional cutting methods such as mills, routers, lasers, EDM, saws or plasma for many applications. It offers greater versatility in the types of products it can cut, and, because it cuts without creating heat or mechanical stress and often reduces or eliminates the need for secondary processing operations and special fixturing. Waterjet cutting has applications in many industries, including aerospace, defense, automotive, semiconductors, disposable products, food, glass, sign, metal cutting, marble, tile and other stone cutting, and paper slitting and trimming.

Surface Preparation and Industrial Cleaning Products.  Our ultrahigh-pressure surface preparation and industrial cleaning systems are used for fast coating removal. These systems typically use direct drive pumps to create pressures in the range of 40,000 to 55,000 psi. Because only pure water is used to remove coatings, waterjetting can offer a lower total cost per project than grit blasting by eliminating the need for collection, containment, and disposal of abrasive materials. Removing coatings with water instead of grit allows other work to be done at the same time as the waterjet operation and reduces containment and cleanup issues. Welding, mechanical and electrical work, or painting, can be performed concurrently with waterjet industrial cleaning, which means projects are completed in less time and there are fewer environmental concerns than with traditional methods such as sandblasting.

Parts and Services.  We also offer consumable parts and services. Consumables represent parts used by the pump and cutting head during operation, such as seals and orifices. Many of the consumable parts are proprietary in nature and are patent protected. We also sell various tools and accessories which incorporate ultrahigh-pressure technology.

Marketing and Customers

Our marketing emphasizes a consultative application-oriented sales approach and is centered on increased awareness of the capabilities of our technology as we believe that waterjet technology is still in the early adoption phase of its product life cycle. These efforts include presence at trade shows, advertising through online media, telemarketing and other product placements and demonstration/educational events as well as an increase in domestic and international sales representation, including those given by our agents and distributors. To enhance sales efforts, our marketing staff and sales force gather detailed information on applications and requirements in targeted market segments. This information is used to develop standardized and customized solutions using ultrahigh-pressure and robotics technologies.

We offer our consumable parts online at www.flowparts.com website in the U.S. and www.floweuropeparts.com in Europe. We strive to ensure that we are able to ship a large number of parts within 24 hours to our customers.

We have established strong relationships with a diverse set of customers. No single customer or group of customers under common control accounted for 10% or more of consolidated sales during the respective fiscal years ended April 30, 2013, 2012 and 2011.

We believe that the productivity-enhancing nature of our ultrahigh-pressure technology, the diversity of our markets along with the relatively early adoption phase of our technology, and the displacement of more traditional methods of machine tooling, fabricating and surface preparation will enable us to continue growing our market share in the machine tool cutting and surface preparation markets as global economic market conditions improve.

Competition in Our Markets

Flow products are sold worldwide into a variety of highly competitive markets. In all markets, we compete on the basis of product performance, customer service, quality and price.  From time to time, the intensity of competition results in price discounting in a particular industry or region.  Such price discounting puts pressure on margins and can negatively impact operating profit.

Within our major markets - both domestic and foreign - our products compete against other waterjet competitors as well as various other cutting technologies such as lasers, saws, plasma, shears, routers, drills, and abrasive blasting techniques. Waterjet cutting systems offer manufacturers many advantages over traditional cutting machines including an ability to cut or machine virtually any material, in any direction, with improved manufacturing times, and with minimal impact on the material being cut. These factors, in addition to the elimination of secondary processing in many circumstances, enhance the manufacturing productivity of our systems as compared to other processes. More than 100 firms, other than Flow, have developed tools for cleaning and cutting based on waterjet technology. Most of our waterjet competitors provide only portions of a waterjet system,

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such as pumps or control systems. Other competitors integrate components from a variety of suppliers to provide a complete solution.

Broadest Product Line. We offer a broad product line that encompasses a complete array of capabilities, technologies and price points. We believe that the breadth of our product offering enables us to match a diverse base of customers' applications and budgets. Our product offerings range from large custom built composite machining solutions and turnkey shape-cutting systems to environmentally-friendly ultrahigh-pressure surface preparation systems. Our competitive strength in the high-end segment of the market stems from our leading-edge technological and engineering capabilities which enable us to deliver custom engineered solutions that revolutionize the machining and tooling industries. In the mid-tier segments of the waterjet cutting and surface preparation markets, we compete on the basis of product quality and innovation, distribution presence and capability, channel knowledge and expertise, geographic availability, breadth of product line, access speed and performance, reliability, and price competitiveness. We compete in the economy market segment, the lowest-tier in our market, on the basis of geographic availability, reliable segment-leading technology and product value.

Unmatched Customer Access in the Waterjet Industry.We believe our channels of distribution are unparalleled in the industry. With years of expertise, our direct sales force enhances customer experience by using a consultative sales approach. This direct channel of sales is augmented by our indirect sales partners who primarily focus on selling to mid-tier and economy product line customers.

In addition to pumps and systems, we sell consumable parts and services. We face competition from numerous other companies who sell non-proprietary replacement parts for our machines. While they generally offer a lower price, we believe the quality of our parts and on-time delivery, coupled with our technical service, makes us the value leader in consumable parts.

We estimate that the waterjet cutting solutions market opportunity exceeds $1 billion in annual revenue potential, or more than twice the current level. The total market potential continues to grow as new applications are developed. The rapidly increasing global market for waterjet solutions, while providing high growth opportunities, is also attracting new market entrants which will increase competition.

Sales Outside the United States

In fiscal year 2013, $150.2 million, or 58%, of our total consolidated sales were to customers outside the United States. The following table shows sales outside the U.S. by geography for the last three years.

	Fiscal Year Ended April 30,
Sales Outside The U.S.	2013			2012			2011
Exports from the U.S.	$	30,655		$	27,199		$	25,450
Sales from Europe, Middle East, and Africa	50,704			51,429			42,929
Sales from Asia Pacific	40,344			41,119			32,011
Sales from Latin America	26,061			28,365			20,373
Sales from Other Locations	2,400			2,513			2,329
Total	$	150,164		$	150,625		$	123,092
Percent of Total Sales	58		%	59		%	57		%

Raw Materials

We source our raw materials, parts, subassemblies and manufactured components from suppliers both domestically and internationally. Principal materials used to make waterjet products include a variety of metal and plastic products and tubing. We also purchase many electrical and electronic components, fabricated metal parts, high-pressure fluid hoses, ball screws, roller pinions, seals and other items integral to our products. Suppliers are competitively selected based on quality, delivery and cost. Our suppliers' ability to provide timely and quality components affect our production schedules and contract profitability. Some of our business units purchase items locally from sole or limited source suppliers; however, we are currently able to source our raw materials in quantities sufficient to meet our requirements in each business unit, some of which may require longer lead times due to availability.

We use a variety of agreements with suppliers to protect our intellectual property and processes to monitor and mitigate risks of the supply base causing a business disruption. The risks monitored include supplier financial viability, the ability to

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scale production levels, business continuity, quality, and delivery. We currently do not employ forward contracts or other financial instruments to hedge commodity price risk, although we continuously explore supply chain risk mitigation strategies.

Intellectual Property

We have a number of patents related to our processes and products both domestically and internationally. While in the aggregate our patents are of material importance to our business, we believe that no single patent or group of patents is of material importance to our business as a whole. We also rely on non-patented proprietary trade secrets and knowledge, confidentiality agreements, creative product development and continuing technological advancement to maintain a technological lead on our competitors.

Product Development

We strive to improve our competitive position in all of our segments by continuously investing in research and development to drive innovation in our products and manufacturing technologies. Our research and development investments support the introduction of new products and enhancements to existing products.

We have always placed an emphasis on product oriented research and development relating to the development of new or improved products. During the respective fiscal years ended April 30, 2013, 2012, and 2011 we invested $12.2 million, $10.9 million, and $10.1 million related to product research and development. Research and development expenses for the fiscal year ended April 30, 2013 of $11.4 million included the benefit of a reimbursement for certain research and engineering costs of $0.8 million. Research and development expenses as a percentage of revenue were between 4% and 5% during each of the respective fiscal years ended April 30, 2013, 2012, and 2011. We expect to continue significant investment in research and development activities in order to improve and sustain existing products and technologies, as well as create innovative next-generation products and maintain competitive advantages in the markets we serve.

Backlog

Our backlog increased from $44.7 million at April 30, 2012 to $50.4 million at April 30, 2013 based on the timing and volume of customer orders. The backlog at April 30, 2013 and 2012 represented 19% and 18% of our trailing twelve months sales as of April 30, 2013 and 2012, respectively.

Backlog includes firm orders for which written authorizations have been accepted and revenue has not yet been recognized. Generally, our products, exclusive of our Advanced segment systems, can be shipped within a four to 16 week period. Advanced segment systems typically have long lead times which may range from 12 to 24 months. Individual orders of our products and services can involve the delivery of several hundred thousand dollars of products or services at one time. Due to possible changes in customer delivery schedules and cancellation of orders, our backlog at any particular date is not indicative of actual sales for any succeeding period. Delays in delivery schedules and/or a reduction of backlog during any particular period could have a material adverse effect on our business and results of operations.

Employees

We had approximately 680 full-time employees as of April 30, 2013, of which 63% were located in the United States, and 37% were located in other foreign locations. Our success depends in part on our ability to attract and retain motivated and productive employees.

Available Information

We are subject to the reporting requirements of the Exchange Act and its rules and regulations. The Exchange Act requires us to file reports, proxy statements and other information with the U.S. Securities and Exchange Commission (“SEC”). All material we file with the SEC is publicly available at the SEC's Public Reference Room at 100 F Street, N.E., Washington, D.C. 20549 and may also be obtained by calling the SEC at 1-800-SEC-0330. In addition, the SEC maintains a Web site that contains reports, proxy statements and other information regarding issuers that file electronically with the SEC. These materials may be obtained electronically by accessing the SEC's Web site at www.sec.gov.

We make available, free of charge on our Web site, our Annual Report on Form 10-K, Quarterly Reports on Form 10-Q (including related filings in eXtensible Business Reporting Language ("XBRL") format), Current Reports on Form 8-K and amendments to these reports filed or furnished pursuant to Section 13(a) or 15(d) of the Exchange Act, as soon as reasonably practicable after we electronically file these documents with, or furnish them to, the SEC. These documents are posted on our Web site at www.FlowWaterjet.com - select the “Investors” link and then the “Reports” link.

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Shareholders may request a copy of the annual reports on Form 10-K and quarterly reports on Form 10-Q from:

Flow International Corporation

Attention: Investor Relations

23500 64th Avenue South

Kent, WA 98032

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Item 1A. Risk Factors

Our business is subject to certain risks and events that, if they occur, could adversely affect our financial condition, results of operations, and the trading price of our common stock.

You should consider the following risk factors, in addition to the other information presented in this report and the matters described in our “Forward-Looking Statements” section, as well as other reports and registration statements we file from time to time with the SEC, in evaluating us, our business, and an investment in our securities.

Risks Related to our Business

Our results of operations and financial condition could be materially affected by changes in product mix or pricing.

Our overall profitability may not meet expectations if our products, customers or geographic mix or changes in customer requirements or specifications, in particular as it relates to our long-term contracts, are substantially different than anticipated or initially planned. Our profit margins vary among products, customers and geographic markets. Consequently, if our mix of any of these is substantially different from what is anticipated or planned in any particular period, our operating results may be negatively affected and our profitability lower than anticipated.

The global macroeconomic environment continues to be volatile and its impact on the credit markets could adversely affect our results of operations.

The macroeconomic environment continues to remain volatile and to the extent that it deteriorates it could:

• have an adverse effect on our customers and suppliers and their ability to purchase our products;

• reduce our ability to take advantage of growth and expansion opportunities;

• adversely affect our ability to access credit markets or raise capital on terms acceptable to us;

• limit our capital expenditures for repair or replacement of existing facilities or equipment; and

• adversely affect our ability to be in compliance with covenants under existing credit agreements.

All of which could adversely affect our results of operations and financial position.

Failure to effectively manage our indirect sales channel and indirect technical service providers could adversely affect our results of operations and financial condition.

In order to increase sales and capture a leading market share globally, we have focused on expanding our indirect sales channel, through distributors and sales agents, to augment our existing direct sales force. Additionally, we have engaged indirect technical service partners to augment our technical service staff with installations and service calls as a result of the increase in demand for our products. Our success in integrating the indirect sales channel and indirect technical service providers into our business will be impacted by our ability to train and manage new and existing relationships with distributors, sales agents and service providers. If we are not able to effectively train and manage these indirect channels, we may not be able to achieve our operating result goals and this could have a negative effect on our operating results and financial condition.

Rising commodity and fuel prices may adversely affect our results of operations and financial condition.

We are a large buyer of steel, as well as other commodities required for the manufacture of our products. As a result, changes in commodity and fuel prices may have an adverse effect on our results of operations and financial condition through increased inventory and shipping costs by suppliers. Historically, we have been able to pass on increases in commodity and shipping prices to our customers; however, our success in doing so in future periods cannot be assured.

If we fail to technologically advance our products and successfully introduce new products, our future growth and financial results may be adversely affected.

Our ability to develop and introduce new products may affect our competitive position and often requires the investment of significant resources. Difficulties or delays in research, development or production of new products or failure to gain market acceptance of new products and technologies may reduce future revenues and adversely affect our competitive position and our financial results.

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Foreign currency exchange rates may adversely affect our results of operations and financial condition.

We have substantial assets, liabilities, revenues and expenses denominated in currencies other than the U.S. dollar, and to prepare our consolidated financial statements, we must translate these items into U.S. dollars at the applicable exchange rates. We are therefore exposed to movements in foreign exchange rates against the U.S. Dollar. Of these, the most significant is currently the Euro. Substantially all of our sales to our customers and operating costs in Europe are denominated in Euro, creating an exposure to foreign currency exchange rates. Additionally, certain of our foreign subsidiaries make sales denominated in U.S. Dollars which expose them to foreign currency transaction gains and losses.

If we fail to obtain sufficient quantities of materials and components required for our manufacturing activities at competitive prices and quality and on a timely basis or fail to effectively adapt our cost structure to changing market conditions, our business and financial results will suffer.

We purchase materials and components from third parties for use in our manufacturing operations. Some of our business units purchase these items from sole or limited source suppliers. If we cannot obtain sufficient quantities of materials and components at competitive prices and quality and on a timely basis, we may not be able to produce sufficient quantities of product to satisfy market demand, product shipments may be delayed or our material or manufacturing costs may increase. In addition, because we cannot always immediately adapt our cost structures to changing market conditions, our manufacturing capacity may at times exceed our production requirements or fall short of our production requirements. Any or all of these problems could result in the loss of customers, provide an opportunity for competing products to gain market acceptance and otherwise adversely affect our business and financial results.

Our stock price has been and is likely to continue to be highly volatile.

The trading price of our common stock has been highly volatile. On July 23, 2013, the closing price of our common stock was $3.81. Our stock price could decline or be subject to wide fluctuations in response to factors such as the risks discussed in this section and the following:

• actual or anticipated fluctuations in our operating results or our competitors' operating results;

• statements by us regarding the process to evaluate strategic alternatives to enhance shareholder value including, among other things, the potential sale of the Company or other transaction; 

• announcements by us or our competitors of new products;

• capacity changes, significant contracts or changes to existing contracts, acquisitions, or strategic investments;

• our growth rate and our competitors' growth rates;

• changes in stock market analyst recommendations regarding us, our competitors, or our industry in general, or lack of analyst coverage of our common stock;

• negative changes in global financial markets and economic conditions;

• sales of our common stock by our executive officers, directors, and significant stockholders or sales of substantial amounts of common stock at one time; and

• changes in accounting principles.

In addition, there has been significant volatility in the market price and trading volume of our securities that is sometimes unrelated to our operating performance. Some companies that have had volatile market prices for their securities have been the target of a hostile takeover or subject to involvement by activist shareholders. If we were to become the target of such a situation, it could result in substantial costs and would divert management's attention and resources.

We have unresolved claims with the purchaser of Avure.

During fiscal year 2009, we were notified by the purchaser of our Avure Business (“Purchaser”), which we reported as a discontinued operation for the fiscal year ended April 30, 2006, that the Swedish tax authority was conducting an audit which includes periods during the time that we owned the subsidiary. Pursuant to our agreement with the Purchaser, we had made commitments to indemnify various liabilities and claims, including any tax matters relating to the periods when we owned the business. The Swedish tax authority concluded its audit and issued a final report in November 2009, initially asserting that Avure owes 19.5 million Swedish Krona, approximately $2.8 million at the initial date of assessment, in additional taxes, penalties and fines. In April 2010, we filed an appeal on behalf of Avure to contest the Swedish tax authority's assertion. Since the filing of our appeal, there has been a hearing before the Swedish district court regarding our appeal. In August 2012, we received notice that the Swedish district court issued a ruling in favor of the Swedish tax authority. We continue to contest the findings and filed an appeal with the Administrative Court of Stockholm in September 2012. We recorded a charge in fiscal year 2010 related to the periods during which we owned Avure and, as of April 30, 2013, the liability is approximately $1.3

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million. The balance of the accrued liability will fluctuate period over period with changes in foreign currency rates until such time as the matter is ultimately resolved.

We have identified material weaknesses in our internal control over financial reporting and we may be unable to develop, implement, and maintain appropriate controls in future periods. Our failure to implement and maintain effective internal control over financial reporting could result in material misstatements in our financial statements which could require us to restate financial statements, cause investors to lose confidence in our reported financial information, and could have an adverse effect on our share price.

We have identified a material weakness in the control environment within our Brazilian operations and in our monitoring of these operations that resulted in design and operating control deficiencies including those related to the tracking and accounting for inventory and the preparation and review of income tax returns for our subsidiary in Brazil. Additionally, we determined we had a material weakness in the scope and conduct of investigations related to whistleblower allegations. As a result, our management concluded that disclosure controls and procedures and internal control over financial reporting were not effective as of April 30, 2013. See Item 9A - Controls and Procedures.

In the course of remediating the material weaknesses, we may find historical errors or discover new facts that cause us to reach different conclusions on our historical accounting or otherwise change our existing opinion of these matters. This could result in adverse adjustments to our previously reported financial results. In addition, we may be unable to meet our reporting obligations and cause investors to lose confidence in our reported financial information, leading to a decline in our share price.

We might fail to adequately protect our intellectual property rights or third parties might assert that our technologies infringe on their intellectual property.

Protecting our intellectual property is critical to our innovation efforts. We rely on a combination of patents, trade secrets, and trademarks to protect our intellectual property, but this protection might be inadequate. For example, our pending or future patent applications might not be approved or, if allowed, they might not be of sufficient strength or scope. Conversely, third parties, certain of whom have filed lawsuits against us in the past, might assert that our technologies infringe their proprietary rights. Any future related litigation to defend our intellectual property and/or defend ourselves from assertions of infringement could result in substantial costs and diversion of our efforts and could adversely affect our business, whether or not we are ultimately successful.

If we are unable to hire, retain and motivate highly qualified employees, including our key employees, we may not be able to successfully manage our business.

Our success depends on our ability to identify, attract, hire, retain and motivate highly skilled technical, managerial, sales and marketing, and corporate personnel. If we fail to successfully hire and retain a sufficient number of highly qualified employees, we may have difficulties in supporting our customers or expanding our business. The realignment of resources, reductions in workforce, and/or other operational decisions could create an unstable work environment that may have a negative effect on our ability to hire, retain, and motivate employees.

Our business and operations are substantially dependent on the performance of our key employees, all of whom are employed on an at-will basis. While none of our key personnel is irreplaceable, the loss of the services of any of these individuals may be disruptive to our business. There can be no assurance that any retention program we initiate will be successful at retaining employees, including key employees.

Changes in our income tax rates or exposure to additional income tax liabilities could affect our profitability. In addition, audits by tax authorities could result in additional tax payments for prior periods.

We are subject to income taxes in the U.S. and in various foreign jurisdictions. Domestic and international tax liabilities are subject to the allocation of income among various tax jurisdictions. Our effective tax rate can be affected by changes in the mix of earnings in countries with differing statutory tax rates, accruals related to unrecognized tax benefits, the results of audits and examinations of previously filed tax returns and changes in tax laws. Any of these factors may adversely affect our tax rate and decrease our profitability. The amount of income taxes we pay is subject to ongoing audits by U.S. federal, state and local tax authorities and by non-U.S. tax authorities. If these audits result in assessments different from our unrecognized tax benefits, our future results may include unfavorable adjustments to our tax liabilities.

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Unexpected losses in future reporting periods may require the Company to adjust the valuation allowance against its deferred tax assets.

We evaluate our deferred tax assets for realizability based on all available evidence. This process involves significant assumptions that are subject to change from period to period based on changes in tax laws or variances between the future projected operating performance and our actual results. We are required to establish a valuation allowance for deferred tax assets if we determine, based on available evidence at the time the determination is made, that it is more likely than not that some portion or all of the deferred tax assets will not be realized. In determining the more-likely-than-not criterion, we evaluate all positive and negative available evidence as of the end of each reporting period. Future adjustments, either increases or decreases, to the deferred tax asset valuation allowance will be determined based upon changes in the expected realization of the net deferred tax assets. The realization of the deferred tax assets ultimately depends on the existence of sufficient taxable income in either the carry back or carry forward periods under the tax law. Due to significant estimates utilized in establishing the valuation allowance and the potential for changes in facts and circumstances, it is reasonably possible that we may be required to record adjustments to the valuation allowance in future reporting periods. Such a charge could have a material adverse effect on our results of operations and financial condition. As of April 30, 2013, we had $17.6 million of net deferred tax assets.

Any significant disruption in our information technology systems or those of third-parties that we utilize in our operations could adversely impact our business.

We utilize our own communications and computer hardware systems located either in our facilities or in that of a third-party web hosting provider. In addition, we utilize third-party Internet-based or “cloud” computing services in connection with our business operations.  Our servers and those of third-parties we use in our operations are vulnerable to computer viruses, cyber attacks, physical or electronic break-ins and similar disruptions, which could lead to interruptions and delays in our operations as well as loss, misuse, or theft of data.

Our global presence subjects us to risk that may adversely affect our profitability, cash flow, and financial condition.

In fiscal year 2013, approximately 58% of our sales were derived outside the U.S. Since our growth strategy depends in part on our ability to further penetrate markets outside the U.S., we expect to continue to increase our sales outside the U.S., particularly in emerging markets. In addition, some of our sales distribution offices and many of our suppliers are located outside the U.S. Our international business is subject to risks that are customarily encountered in non-U.S. operations, including:

• interruption in the transportation of materials to us and finished goods to our customers;

• changes in a specific country's or region's political or economic conditions;

• trade protection measures;

• import or export licensing requirements;

• unexpected changes in laws or licensing and regulatory requirements, including negative consequences from changes in tax laws;

• limitations on ownership and on repatriation of earnings;

• difficulty in staffing and managing widespread operations;

• differing employment practices and labor issues;

• differing protection of intellectual property; and

• natural disasters, security concerns, including crime, political instability, terrorist activities and the U.S. and international response thereto.

Any of these risks could negatively affect our results of operations, cash flows, financial condition, and overall growth.

We may need to raise funds to finance our future capital and/or operating needs.

We may need to raise funds through public or private debt or sale of equity to achieve our current business strategy in future periods. The financing we need may not be available when needed. Even if this financing is available, it may be on terms that we deem unfavorable or are materially adverse to our shareholders' interests, and may involve substantial dilution to our shareholders. Our inability to obtain financing will inhibit our ability to implement our development strategy, and as a result, could require us to diminish or suspend our development strategy and possibly cease certain of our operations. If we require additional funds and are unable to obtain additional financing on reasonable terms, we could be forced to delay, scale back or eliminate certain product development programs and/or our capital projects. In addition, such inability to obtain additional financing on reasonable terms could have a negative effect on our business, operating results, or financial condition to such

13

extent that we are forced to restructure, sell assets or cease operations, any of which could put our shareholders' investment dollars at significant risk.

We may incur net losses in the future, and we may not be able to sustain profitability on a quarterly or annual basis.

We may incur net losses in the future including losses from our operations, the impairment of long-lived assets and restructuring charges. There can be no assurance that we will be able to conduct our business profitably in the future.

We may not be able to comply with the financial tests or ratios required in order to comply with covenant requirements under our Credit Facility which may impact our ability to draw funds and may result in the acceleration of the maturity of, and/or the termination of the Credit Facility.

Our Credit Facility agreement requires us to comply with or maintain certain financial tests and ratios and restrict our ability to: 

• draw down on our existing line of credit or incur more debt;

• make certain investments and payments;

• fund additional letters of credit;

• pay cash dividends; and

• transfer or sell assets.

Our ability to comply with these covenants is subject to various risks and uncertainties. In addition, events beyond our control could affect our ability to comply with and maintain the financial tests and ratios required by this indebtedness. Any failure by us to comply with and maintain all applicable financial tests and ratios and to comply with all applicable covenants could result in an event of default with respect to a substantial portion of our debt which would result in the acceleration of the maturity and/or the termination of our credit facility. Even if we are able to comply with all applicable covenants, the restrictions on our ability to operate our business in our sole discretion could harm our business.

Our operations may be impaired as a result of disasters, business interruptions or similar events.

Disasters and business interruptions such as earthquakes, flooding, fire, and electrical failure affecting our operating activities and major facilities could materially and adversely affect our operations, our operating results and financial condition. We have developed a disaster recovery plan to mitigate the negative results of such an occurrence; however, the implementation and execution of such plans may not be adequate.

If we are unable to complete the upgrades to our information technology systems that are currently in process, or our upgrades are unsuccessfully implemented, our future success may be negatively impacted.

In order to maintain our leadership position in the market and efficiently process increased business volume, we are making ongoing upgrades to our computer hardware, software and our Enterprise Resource Planning (“ERP”) systems. Should we be unable to continue to fund these upgrades, or should the system upgrades be unsuccessful or take longer to implement than anticipated, our ability to grow the business and our financial results could be adversely impacted.

Violations of the U.S. Foreign Corrupt Practices Act could subject us to civil or criminal liability.

As a global company, we are also subject to risks that our employees, representatives or agents could conduct our operations outside the U.S. in ways that may violate the U.S. Foreign Corrupt Practices Act or other similar anti-bribery laws. Although we have policies and procedures to comply with those laws, our employees, representatives and agents may take actions that violate our policies. Further, indirect sales representatives or other agents that help sell our products or provide other services may violate our anti-bribery policies and procedures as we do not have direct oversight into their conduct. Any such violations could result in fines and other penalties and could otherwise have a negative impact on our business.

There are uncertainties associated with the exploration and evaluation of strategic alternatives to enhance shareholder value.

On June 7, 2013, we announced that our Board of Directors initiated a process to evaluate strategic alternatives to enhance shareholder value, including, among other things, the potential sale of the Company or other transaction. The Board of Directors has retained a financial advisor to assist it in evaluating these alternatives. There is no set timetable for completion of the evaluation process, and we do not intend to provide updates or make any comments regarding the evaluation of strategic

14

alternatives, unless our Board of Directors has approved a specific transaction or otherwise deems disclosure appropriate. There can be no assurance that the exploration of strategic alternatives will result in any transaction or enhance shareholder value.

Risks Related to the Industries in Which We Operate

The markets we serve are highly competitive and some of our competitors may have resources superior to ours. The result of this competition could reduce our sales and operating margins.

We face competition in a number of our served markets as a result of the entry of new competitors and alternative technologies such as lasers, saws, plasma, shears, routers, drills and abrasive blasting techniques. Some of our competitors or potential competitors have substantially greater financial, technical and marketing resources, larger customer bases, longer operating histories, more developed infrastructures or more established relationships in the industry than we have. Our competitors may be able to adopt more aggressive pricing policies, develop and expand their product offerings more rapidly, take advantage of acquisitions and other opportunities more readily, achieve greater economies of scale, and devote greater resources to the marketing and sale of their products than we do. Our failure to compete effectively may reduce our revenues, profitability and cash flow, and pricing pressures may adversely impact our profitability.

Cyclical economic conditions may adversely affect our financial condition and results of operations or our growth rate could decline if the markets into which we sell our products decline or do not grow as anticipated.

Our products are sold in industries and end-user applications that have historically experienced periodic downturns, such as automotive, aerospace, job shops, stone and tile and surface preparation. Cyclical weaknesses in the industries that we serve have led and could lead to a reduced demand for our products and adversely affect our financial condition and results of operations. Any competitive pricing pressures, slowdown in capital investments or other downturn in these industries could adversely affect our financial condition and results of operations in any given period. Additionally, visibility into our markets is limited. Our quarterly sales and operating results depend substantially on the volume and timing of orders received during the quarter, which are difficult to forecast. Any decline in our customers' markets would likely result in diminished demand for our products and services and would adversely affect our growth rate and profitability.

Item 1B. Unresolved Staff Comments

There are no unresolved comments that were received from the SEC staff relating to our periodic or current reports under the Securities Exchange Act of 1934 as of April 30, 2013.

Item 2. Properties

We occupied approximately 353 thousand square feet of floor space on April 30, 2013 for manufacturing, warehousing, engineering, sales offices, and administration, of which approximately 58% was located in the United States.

The following table provides a summary of the floor space by reportable segment:

	Owned	Leased
	(In square feet)
Standard	15,820	280,778
Advanced	40,245	16,000
Total	56,065	296,778

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We have operations in the following locations:

Location	Purpose
Kent, Washington	Headquarters, and primary ultrahigh-pressure pump and component manufacturing facility for our Standard segment
Jeffersonville, Indiana	Manufacturing facility for certain Standard system components and primary manufacturing facility for our Advanced segment systems
Other Sales Office and Operational Locations
Nagoya, Japan	Bretten, Germany
Tokyo, Japan	Birmingham, England
Yokohama, Japan	Milan, Italy
Shanghai, China	Madrid Spain
Guangzhou China	Lyon, France
Beijing, China	Brno, Czech Republic
Bangalore, India	Dubai, UAE
Hsinchu, Taiwan	Buenos Aires, Argentina
Sao Paulo, Brazil

We believe that our principal properties are adequate for our present needs and expect them to remain adequate for the foreseeable future.

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Item 3. Legal Proceedings

Refer to Note 7 -Commitments and Contingencies of the Notes to Consolidated Financial Statements included in Item 8, Financial Statements and Supplementary Data for a summary of legal proceedings.

Item 4.Mine Safety Disclosures

Not applicable

PART II

Item 5. Market for Registrant's Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities

Market Information

Our stock is traded on the NASDAQ Stock Market under the symbol “FLOW”. The range of high and low sales prices for our common stock for the last two fiscal years, by quarter, is set forth in the following table:

	Fiscal Year 2013		Fiscal Year 2012
	Low	High	Low	High
First Quarter	$2.70	$4.25	$2.98	$4.34
Second Quarter	$3.02	$3.88	$1.90	$3.48
Third Quarter	$2.85	$4.06	$2.26	$3.95
Fourth Quarter	$3.31	$3.98	$3.64	$4.49

As of July 23, 2013, there were approximately 870 holders of record of our common stock.

Dividends

We have not paid dividends to common shareholders in the past. Our Board of Directors intends to retain future earnings to finance development and expansion of our business and reduce any debt and does not expect to declare dividends to common shareholders in the foreseeable future. Additionally, our ability to pay cash dividends is restricted under our Credit Facility Agreement. Refer to Note 6 -Debt to the Consolidated Financial Statements included in Item 8, Financial Statements and Supplementary Data, for further discussion on our Credit Facility.

Issuer Purchases of Equity Securities

None.

Unregistered Securities

The Company has been issuing restricted stock pursuant to its 2005 Equity Incentive Plan (the “2005 Plan”) under an exemption from registration under the 1933 Act. The Company plans to file a registration statement on Form S-8 subsequent to filing this annual report on Form 10-K to register future exercises of stock options and future issuances of securities under the 2005 Plan.

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Comparison of Five-Year Cumulative Total Shareholder Return

The following graph compares the cumulative 5-year total return of holders of our common stock with the cumulative total returns of the S&P Smallcap 600 index, the NASDAQ Composite index, and the Dow Jones U.S. Industrial Machinery index. The graph below assumes a $100 investment in our common stock and in each index at April 30, 2008, that all dividends are reinvested, and that the measurement dates are the last trading day of the fiscal year shown. The stock price performance shown in the graph is not necessarily indicative of future price performance.

	4/08	4/09	4/10	4/11	4/12	4/13
Flow International Corporation	100.00	18.15	31.51	42.97	40.98	36.49
S&P Smallcap 600	100.00	69.95	103.37	125.52	126.86	148.83
NASDAQ Composite	100.00	71.91	104.03	122.73	131.54	146.04
Dow Jones US Industrial Machinery	100.00	59.54	99.29	128.64	124.28	141.91

Recent Sales of Unregistered Securities

None.

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Item 6. Selected Financial Data

The following selected consolidated financial data should be read in conjunction with our audited consolidated financial statements, the related notes and Management's Discussion and Analysis of Financial Condition and Results of Operations, and Risk Factors, which are included in this Annual Report on Form 10-K.

	Fiscal Year Ended April 30,
	2013		2012		2011		2010			2009
	(In thousands, except per share data)
Statement of Operations Data:
Sales	$	259,338	$	253,768	$	216,524	$	173,749		$	210,103
Income (Loss) From Continuing Operations	5,172		9,389		1,008		(7,389		)	(23,086		)
Net Income (Loss)	5,037		9,449		766		(8,484		)	(23,819		)
Basic and Diluted Income (Loss) Per Share:
Income (Loss) From Continuing Operations	0.11		0.20		0.02		(0.17		)	(0.61		)
Net Income (Loss)	0.10		0.20		0.02		(0.19		)	(0.63		)

	April 30,
	2013		2012		2011		2010		2009
	(In thousands)
Balance Sheet Data:
Working Capital	$	59,195	$	56,445	$	41,131	$	31,913	$	27,923
Total Assets	162,093		167,066		153,063		131,209		144,960
Short-Term Debt (i)	10,559		21		5,525		411		16,593
Long-Term Obligations (ii)	—		9,631		8,762		7,972		1,937
Shareholders' Equity	96,734		91,048		79,454		75,624		62,711

i. Short-Term Debt at April 30, 2013 includes subordinated notes and accrued interest of $10.6 million as the subordinated notes are classified as current. The principal balance and accrued interest on the subordinated notes will aggregate to $10.8 million when due in August 2013.

ii. Long-Term Obligations at April 30, 2012, 2011, and 2010 include subordinated notes and accrued interest of $9.6 million, $8.7 million, and $8.0 million, respectively.

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Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations

As you read this discussion and analysis, refer to our Consolidated Statements of Operations included in Item 8 - Financial Statements and Supplementary Data, which presents the results of our operations for the respective fiscal years ended April 30, 2013, 2012 and 2011. We analyze and explain the differences between the periods in the specific line items of our Consolidated Statements of Operations. This discussion and analysis has been organized as follows:

• Executive Summary, including overview and business strategy;

• Results of operations beginning with an overview of our results, followed by a detailed review of those results by reporting segment;

• Financial condition addressing liquidity position, sources and uses of cash, capital resources and requirements; commitments, and off-balance sheet arrangements; and

• Critical accounting policies which require management's most difficult, subjective or complex judgment.

Certain other statements in Management's Discussion and Analysis are forward-looking as defined in the Private Securities Litigation Reform Act of 1995. Our ability to fully implement our strategies and achieve our objective may be influenced by a variety of factors, many of which are beyond our control. These risks and uncertainties pertaining to our business are set forth in Part I, Item 1A - Risk Factors.

Executive Summary

Overview

We are a global technology-based manufacturing company committed to providing a world class customer experience. We offer technological leadership and exceptional waterjet performance to a wide-ranging customer base, benefiting many cutting and surface preparation applications, delivering profitable waterjet solutions and dynamic business growth opportunities to our customers.

Fiscal Year 2013 Highlights

During fiscal year 2013, we saw the achievement of all-time revenue records, in the aggregate, for our Standard segment and for our spare parts business, which is part of the Standard segment. This resulted in net income of $5.0 million, or earnings per share of $0.10, adjusted earnings before interest, tax and depreciation ("Adjusted EBITDA") of $21.2 million and cash from operations of $7.9 million for the fiscal year ended April 30, 2013.

On an annual basis:

• Overall revenues increased 2% to $259.3 million for fiscal year 2013, an all-time high, or an increase of $5.6 million from $253.8 million in the comparative prior year;

• Standard segment revenue reached $239.4 million, a 4% improvement over the prior fiscal year, and an all-time high for the segment;

◦ We achieved record annual sales from our global spare parts business at $86.2 million, an 8% growth over the prior fiscal year;

◦ Sales of our recently introduced Mach 2c and Mach 4c systems represented approximately 26% of Standard segment system sales during fiscal year 2013;

• Advanced segment systems sales were $19.9 million, which was 15% lower than fiscal year 2012, as expected, primarily due to the timing of contracts. Backlog for the Advanced segment was $30.7 million as of April 30, 2013, which will be realized over the next four to six quarters;

• Our overall gross profit margins of 38% decreased by approximately 100 basis points when compared to the prior year, primarily as a result of product mix in our Standard segment and below normal gross margins from our Advanced segment;

• Our operating income was $12.7 million or 5% of sales compared with operating income of $14.7 million or 6% of sales in the prior fiscal year;

• We generated net income of $5.0 million or earnings per share of $0.10, compared to net income of $9.4 million or $0.20 per share in the comparative prior year; and

• Our Adjusted EBITDA was $21.2 million for fiscal year 2013 as compared to $24.4 million in the prior year. Refer to reconciliation of Adjusted EBITDA, which is a Non-GAAP financial measure, to Net Income set forth below.

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Looking Ahead

Economic Climate. We continue to experience uneven order patterns based on the renewed uncertainty in the marketplace that we started seeing in the fourth quarter of fiscal year 2013. We anticipate that this uncertainly will impact us in a number of direct and indirect ways including: demand for our products based on confidence in the marketplace, differences in demand by geographic regions; pricing and product mix; potential changes in currency exchange rates; availability of credit; and inflation.

Cost Structure Changes. Management recently implemented plans to achieve approximately $13 million in cost reductions on an annualized basis, which includes targeted plans to reduce product costs and lower operating expenses. Approximately $4 million of the reductions are expected to be realized through gross margin improvements on our new products, while the remaining $9 million in savings will be realized through a combination of global staff reductions, optimization of our sales commission structure, and other efficiencies through process improvement. These reductions are anticipated to begin in the first quarter of fiscal year 2014 with the full annualized run rate of savings in place by the end of fiscal year 2014.

New Products. We continue to make strategic investments in research and development for existing products and new products and applications. We believe that delivering innovative and high-value solutions is critical to meeting our customer needs and achieving our future growth. We remain positive with regard to the global introduction of our Mach 2c and Mach 4c products. Sales of these systems approximated 26% of Standard segment systems revenue, at gross margin levels 10 points lower than those within our fleet of systems. As discussed above, we have plans underway to bring the gross profit margins up to normalized levels by the end of fiscal year 2014.

Management remains focused on creating long-term shareholder value. We believe that Adjusted EBITDA, which we define as net income, as determined in accordance with accounting principles generally accepted in the United States of America (“GAAP”), excluding the effects of income taxes, depreciation, amortization of intangible assets, interest expense, and other non-cash charges, which includes stock-based compensation expense, foreign currency gains or losses, and other allowable add backs pursuant to our Credit Facility Agreement, is a good measure of our core performance in creating this value.

Reconciliation of Adjusted EBITDA to Net Income:

(in 000s)

	Fiscal Year Ended April 30,
	2013		2012			2011
Net Income	$	5,037	$	9,449		$	766
Add Back:
Depreciation and Amortization	5,919		6,208			6,302
Income Tax Provision	5,129		3,276			2,895
Interest Charges	1,573		1,112			1,776
Non-Cash Charges	3,423		4,377			1,758
Other (i)	105		(60		)	242
Adjusted EBITDA	$	21,186	$	24,362		$	13,739

(i) Allowable Add backs Pursuant to Credit Facility Agreement

Adjusted EBITDA is a non-GAAP financial measure and the presentation of this non-GAAP financial measure is not intended to be considered in isolation or as a substitute for the financial information presented in accordance with GAAP. The items excluded from this non-GAAP financial measure are significant components of our financial statements and must be considered in performing a comprehensive analysis of our overall financial results. We use this measure, together with our GAAP financial metrics, to assess our financial performance, allocate resources, evaluate our overall progress towards meeting our long-term financial objectives, and to assess compliance with our debt covenants. We believe that this non-GAAP financial measure is useful to investors and analysts in allowing for greater transparency with respect to the supplemental information used by us in our financial and operational decision making. Our calculation of Adjusted EBITDA may not be consistent with calculations of similar measures used by other companies.

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Results of Operations

(Tabular amounts in thousands)

Summary Consolidated Results

										2013 vs 2012					2012 vs 2011
	Fiscal Year Ended April 30,									Increase (Decrease)					Increase (Decrease)
	2013			2012			2011			$			%		$			%
	(In thousands)
Sales	$	259,338		$	253,768		$	216,524		$	5,570		2	%	$	37,244		17	%
Gross Margin	97,922			99,368			84,461			(1,446		)	(1	)%	14,907			18	%
Selling, General, and Administrative Expenses	85,255			84,699			79,574			556			1	%	5,125			6	%
Operating Income	12,667			14,669			4,887			(2,002		)	(14	)%	9,782			NM
Expressed as a % of Sales:
Gross Margin	38		%	39		%	39		%				(100) bpts					0 bpts
Selling, General, and Administrative Expenses	33		%	33		%	37		%				0 bpts					(400) bpts
Operating Income	5		%	6		%	2		%				(100) bpts					400 bpts
bpts = basis points
NM = not meaningful
Consolidated Sales by Category
										2013 vs 2012					2012 vs 2011
	Fiscal Year Ended April 30,									Increase (Decrease)					Increase (Decrease)
	2013			2012			2011			$			%		$			%
	(In thousands)
Standard System Sales	$	153,202		$	150,456		$	117,721		$	2,746		2	%	$	32,735		28	%
Advanced System Sales	19,925			23,358			28,431			(3,433		)	(15	)%	(5,073		)	(18	)%
Consumable Parts Sales	86,211			79,954			70,372			6,257			8	%	9,582			14	%
	$	259,338		$	253,768		$	216,524		$	5,570		2	%	$	37,244		17	%

Segment Results of Operations

We report our operating results to our Chief Executive Officer, who is our chief operating decision maker, based on market segments which is consistent with management's long-term growth strategy. Our reportable segments are Standard and Advanced. The Standard segment includes sales and cost of sales related to our cutting and surface preparation systems using ultrahigh-pressure water pumps as well as parts and services to sustain these installed systems. Systems included in this segment do not require significant custom configuration. The Advanced segment includes sales and cost of sales related to our complex aerospace projects which require specific custom configuration and advanced features, including robotics, to match unique customer applications.

This section provides a comparison of net sales and gross margin for each of our reportable segments for the last three fiscal years. For further discussion on our reportable segments, refer to Note 14 - Business Segments and Geographic Information of the Notes to the Consolidated Financial Statements included in Item 8, Financial Statements and Supplementary Data.

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Standard Segment

										2013 vs 2012				2012 vs 2011
	Fiscal Year Ended April 30,									Increase (Decrease)				Increase (Decrease)
	2013			2012			2011			$		%		$		%
	(In thousands)
Sales	$	239,413		$	230,272		$	187,887		$	9,141	4	%	$	42,385	23	%
% of total company sales	92		%	91		%	87		%			NM				NM
Gross Margin	94,052			93,843			78,321			209		—	%	15,522		20	%
Gross Margin as % of sales	39		%	41		%	42		%			(200) bpts				(100) bpts
bpts = basis points
NM = not meaningful

Fiscal year 2013 compared to fiscal year 2012

Sales in our Standard segment increased $9.1 million or 4% over the prior year. Excluding the impact of foreign currency changes, sales in the Standard segment increased $14.7 million or 6% in fiscal year 2013 compared to the prior year.

The year over year increases were primarily driven by the following:

• Moderate growth in system sales volume across certain of our geographic regions tempered by the mix and timing of our new product roll-out for an aggregate growth of $2.7 million or 2% over the comparative prior year.

• Consumable parts sales for this segment demonstrated meaningful growth increasing by $6.3 million or 8% over the prior comparative year based on higher system utilization by our customers, a stronger installed base of systems, and increased system sales volumes with all geographies reporting meaningful growth over the prior fiscal year.

Gross margin in fiscal year 2013 was $94.1 million or 39% of sales compared to $93.8 million or 41% of sales in the prior year. Generally, comparisons of gross margin rates in this segment will vary period over period based on changes in our product sales mix and prices and levels of production volume. Gross margin for fiscal year 2013 reflected the impact of our new product sales, including our Mach 2c and Mach 4c, which were at gross margins that were approximately 10% lower than is normal for this segment as we continue to refine our manufacturing operations and optimize supply chain solutions.

Fiscal year 2012 compared to fiscal year 2011

Sales in our Standard segment increased $42.4 million or 23% over the prior year. Excluding the impact of foreign currency changes, sales in Standard segment increased $40.5 million or 22% in fiscal year 2012 compared to the prior year. These increases were driven by the following:

• Double-digit growth in system sales across all geographies on higher system sales volume for an aggregate growth of $32.7 million or 28% over the comparative prior year.

• Consumable parts sales for this segment also increased by $9.7 million or 14% over the prior comparative year based on higher system utilization by our customers and increased system sales volumes with nearly all geographies reporting double-digit growth over the prior fiscal year.

Gross margin in fiscal year 2012 was $93.8 million or 41% of sales compared to $78.3 million or 42% of sales in the prior year. Generally, comparisons of gross margin rates in this segment will vary period over period based on changes in our product sales mix and prices and levels of production volume.

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Advanced Segment

										2013 vs 2012					2012 vs 2011
	Fiscal Year Ended April 30,									Increase (Decrease)					Increase (Decrease)
	2013			2012			2011			$			%		$			%
	(In thousands)
Sales	$	19,925		$	23,496		$	28,637		$	(3,571	)	(15	)%	$	(5,141	)	(18	)%
% of total company sales	8		%	9		%	13		%				NM					NM
Gross Margin	3,870			5,525			6,140			(1,655		)	(30	)%	(615		)	(10	)%
Gross Margin as % of sales	19		%	24		%	21		%				(500) bpts					300 bpts
bpts = basis points
NM = not meaningful

Fiscal year 2013 compared to fiscal year 2012

Sales in the Advanced segment vary period over period for various reasons, such as the timing of contract awards, timing of project design and manufacturing schedules, the timing of shipments to customers, and timing of installation at customer sites. In fiscal year 2013, sales in our Advanced segment decreased $3.6 million or 15% when compared to the prior fiscal year. This decrease was consistent with our expectations and primarily due to the timing of contract awards and a sales discount of $0.7 million made to an existing customer to facilitate our ability to secure future business.

Advanced segment gross margins will vary period over period based on changes in project mix, geographic mix and levels of production. Gross margin in fiscal year 2013 amounted to $3.9 million or 19% of sales compared to $5.5 million or 24% of sales in the prior year. The decrease in gross margin as a percentage of sales when compared to the prior year is attributable to changes in project mix and a $0.4 million charge for an order that was not placed as planned. Advanced segment gross margins will also vary period over period based on changes in product mix, geographic mix and levels of production, as well as adjustments in original estimates to material and installation costs on certain project contracts.

Fiscal year 2012 compared to fiscal year 2011

Sales in the Advanced segment vary period over period for various reasons, such as the timing of contract awards, timing of project design and manufacturing schedules, the timing of shipments to customers, and timing of installation at customer sites. In fiscal year 2012, sales in our Advanced segment decreased $5.1 million or 18% when compared to the prior fiscal year. This decrease was consistent with our expectations and primarily due to the timing of our Advanced contracts and contract awards, as well as the completion of certain multi-year aerospace systems under contract in fiscal year 2012.

Advanced segment gross margins will vary period over period based on changes in project mix, geographic mix and levels of production. Gross margin in fiscal year 2012 amounted to $5.5 million or 24% of sales compared to $6.1 million or 21% of sales in the prior year. The increase in gross margin as a percentage of sales when compared to the prior year is attributable to changes in project mix as well as adjustments in original estimates related to material and installation costs on certain project contracts in the prior year comparative period.

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Selling, General and Administrative Expenses

							2013 vs 2012					2012 vs 2011
	Fiscal Year Ended April 30,						Increase (Decrease)					Increase (Decrease)
	2013		2012		2011		$			%		$		%
	(In thousands)
Sales and Marketing	$	50,251	$	49,454	$	45,359	$	797		2	%	$	4,095	9	%
Research and Engineering	11,431		10,863		10,074		568			5	%	789		8	%
General and Administrative	23,573		24,382		24,141		(809		)	(3	)%	241		1	%
	$	85,255	$	84,699	$	79,574	$	556		1	%	$	5,125	6	%

Fiscal year 2013 compared to fiscal year 2012

Our consolidated selling, general and administrative expenses decreased 50 basis points as a percentage of sales when compared to fiscal year 2012. In total dollars our consolidated selling, general and administrative expenses for the year ended April 30, 2013 increased $0.6 million from fiscal year 2012. The increase in absolute dollars was primarily a result of the following:

• higher sales and related support expense of $1.5 million due to comparatively higher sales volume and the mix of sales through our direct and indirect channels;

• increased investment of $0.4 million to improve and sustain existing products and technologies, as well as new product research and development;

• other general cost increases of $0.4 million over the prior fiscal year due in part to higher average professional service fees;

• offset by lower labor and compensation related costs of $1.3 million which was primarily driven by lower average stock-based compensation; and

• benefit of a reimbursement for certain research and engineering costs of $0.8 million during the year.

Fiscal year 2012 compared to fiscal year 2011

Our consolidated selling, general and administrative expenses decreased 400 basis points as a percentage of sales when compared to fiscal year 2011. In total dollars our consolidated selling, general and administrative expenses for the year ended April 30, 2012 increased $5.1 million from fiscal year 2011. The increase in absolute dollars was primarily a result of the following:

• higher commission expense of $3.2 million due to comparatively higher sales volume and increased sales through our indirect channels;

• increased labor and compensation related costs of $2.9 million driven by the reinstatement of previously reduced wages and suspended employee benefits, incremental investment in personnel, stock-based compensation and other labor related costs;

• offset by lower investment of $0.7 million in technology infrastructure and new product development; and

• other general cost reductions of $0.4 million over the prior fiscal year due in part to the timing of internal projects, and also to management and operational efficiencies.

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Interest Income (Expense), net

										2013 vs 2012				2012 vs 2011
	Fiscal Year Ended April 30,									Increase (Decrease)				Increase (Decrease)
	2013			2012			2011			$		%		$			%
	(In thousands)
Interest Income	$	224		$	62		$	106		$	162	NM		$	(44	)	(42	)%
Interest Expense	(1,573		)	(1,112		)	(1,776		)	461		41	%	(664		)	(37	)%
Net Interest Expense	$	(1,349	)	$	(1,050	)	$	(1,670	)	$	299	28	%	$	(620	)	(37	)%
NM = not meaningful

Interest expense primarily consists of imputed interest on two subordinated notes that carry a below market interest rate, amortization of deferred financing fees and interest charges on the used and unused portion of our Credit Facility, as well as outstanding letters of credit. Net interest expense was $1.3 million, $1.1 million, and $1.7 million for the respective fiscal years ended April 30, 2013, 2012, and 2011.

Net interest expense was consistent for the respective fiscal years ended April 30, 2013 and 2012. Net interest expense for the fiscal year ended April 30, 2011 was higher due to higher average balances outstanding on our Credit Facility and higher average interest rates.

Other Income (Expense), Net

									2013 vs 2012					2012 vs 2011
	Fiscal Year Ended April 30,								Increase (Decrease)					Increase (Decrease)
	2013			2012			2011		$			%		$			%
	(In thousands)
Realized Foreign Exchange Gains (Losses), net	$	(462	)	$	(249	)	$	177	$	213		86	%	$	(426	)	NM
Unrealized Foreign Exchange Gains (Losses), net	(448		)	(587		)	412		(139		)	(24	)%	(999		)	NM
Other	(107		)	(118		)	97		(11		)	(9	)%	(215		)	NM
Other Income (Expense), net	$	(1,017	)	$	(954	)	$	686	$	63		7	%	$	(1,640	)	NM
NM = not meaningful

During the respective fiscal years ended April 30, 2013 and 2012, we recorded net Other Expense of $1.0 million, compared to net Other Income of $0.7 million for the fiscal year ended April 30, 2011. The changes in other income and expense during the current fiscal year were primarily related to fluctuations in realized and unrealized foreign exchange gains and losses on revaluation of third party and intercompany settled and unsettled balances whose payment is anticipated in the foreseeable future.

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Income Taxes

Our provision for income taxes for our continuing operations over the last three years consisted of:

							2013 vs 2012				2012 vs 2011
	Fiscal Year Ended April 30,						Increase (Decrease)				Increase (Decrease)
	2013		2012		2011		$		%		$			%
	(In thousands)
Current Tax Expense	$	2,044	$	1,972	$	1,139	$	72	4	%	$	833		73	%
Deferred Tax Expense	3,085		1,304		1,756		1,781		NM		(452		)	(26	)%
Total Tax Expense	$	5,129	$	3,276	$	2,895	$	1,853	57	%	$	381		13	%
NM = not meaningful

We recognize a net deferred tax asset for items that will generate a reduction in future taxable income to the extent that it is “more likely than not” that these deferred assets will be realized. A valuation allowance is provided when it is more likely than not that some portion or all of a deferred tax asset will not be realized. The ultimate realization of deferred tax assets depends on the generation of future taxable income during the period in which the tax benefit will be realized. Deferred tax assets and liabilities are measured using the enacted tax rates expected to apply to taxable income in the years in which the tax benefit will be realized. In determining the realizability of these assets, we considered numerous factors, including historical profitability, estimated future taxable income and the industry in which we operate. At April 30, 2013, the recorded amount of our deferred tax assets was $17.6 million, net of valuation allowance on certain foreign and domestic NOLs.

Our foreign tax provision consists of current and deferred tax expense (benefit). The United States tax provision consists of current and deferred tax expense (benefit), state taxes and foreign withholding taxes. U.S. income and foreign withholding taxes have not been provided on approximately $15.7 million of cumulative undistributed earnings of foreign subsidiaries. We intend to reinvest these earnings for the foreseeable future. If these amounts were distributed to the U.S., in the form of dividends or otherwise, we would be subject to additional U.S. income taxes. During fiscal year 2011, we repatriated a total of $1.9 million from one foreign subsidiary that was deemed to be a dividend for tax reporting purposes.

Our effective tax rates for the respective fiscal years ended April 30, 2013, 2012 and 2011 were approximately 50%, 26% and 74%. Our fiscal year 2013 effective tax rate was higher than the U.S. federal statutory rate primarily due to recording reserves for uncertain tax positions and non-deductible expenses for certain foreign jurisdictions. Our fiscal year 2012 effective tax rate was lower than the U.S. federal statutory rate primarily as a result from an examination settlement and release of valuation allowances in foreign jurisdictions. Our 2011 effective tax rate was higher than the U.S. federal statutory rate as a result of the repatriation of cash from one foreign subsidiary that was deemed to be a dividend for tax purposes, additional valuation allowances for certain foreign deferred tax assets and uncertain tax benefits.

Liquidity and Capital Resources

Sources of Cash

Historically, our most significant sources of financing have been funds generated by operating activities, available cash and cash equivalents and available lines of credit. From time to time, we raised funds through the sale of common stock.

Cash Generated by Operating Activities

Cash generated by operating activities for the respective fiscal years ended April 30, 2013, 2012 and 2011 was $7.9 million, $12.7 million and $2.9 million. Changes in our working capital resulted in a net use of cash of $16.9 million, $14.0 million, and $14.1 million for the respective fiscal years ended April 30, 2013, 2012, and 2011. The changes in working capital are attributable to the timing of inventory purchases and collection of accounts receivable, purchases from vendors, and deferred revenue and customer deposits due to the timing of contract awards and shipments to customers.

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Available Cash and Cash Equivalents

At April 30, 2013 we had total cash and cash equivalents of $15.5 million, of which $11.6 million was held by our foreign subsidiaries. To the extent that our cash needs in the U.S. exceed our cash reserves and availability under our Credit Facility Agreement, we may repatriate cash from certain of our foreign subsidiaries; however, this is not our current intent and could be limited by our ability to repatriate such cash in a tax efficient manner. We believe that our existing cash and cash equivalents as of April 30, 2013, anticipated funds generated from our operations, and financing available under our existing credit facilities will be sufficient to fund our operations for at least the next twelve months and repay our subordinated notes due in August 2013. However, in the event that there are changes in our expectations or circumstances, we may need to raise additional funds through public or private debt or sale of equity to fund our operations. Cash balances which are not available for general corporate purposes are classified as restricted cash and are primarily related to cash which collateralizes commercial letters of credit.

Subordinated Notes

We have subordinated notes with a principal value of $10.0 million, accruing interest at 2% annually, for an aggregate amount due of $10.8 million in August 2013. We expect to pay the subordinated notes, and related interest, using cash generated from our operations or from our existing credit facilities.

Credit Facilities

We had a $25.0 million Credit Facility agreement which was set to mature March 2, 2014. Under the terms of the Credit Facility in effect as of April 30, 2013, we were required to maintain a maximum consolidated leverage ratio of 2.75x, and a minimum fixed charge coverage ratio of 1.75x. The terms of the Credit Facility define the leverage ratio as the ratio of consolidated indebtedness, excluding our outstanding subordinated notes, to consolidated adjusted Earnings Before Interest, Taxes, Depreciation and Amortization ("Adjusted EBITDA") for the most recent four fiscal quarters. The Fixed Charge Coverage Ratio is defined as the ratio of Adjusted EBITDA, less income taxes and maintenance capital expenditures, during the most recent four fiscal quarters to the sum of interest changes during the most recent four quarters and scheduled debt repayments in the next four quarters.

The financial covenants are measured on a quarterly basis. Our leverage ratio and fixed charge coverage ratio were 0.90 and 12.6, respectively as of the fiscal quarter ended April 30, 2013. Our calculations of these financial ratios are reported in Exhibit No. 99.1 of this Annual Report on Form 10-K. A violation of any of the Credit Facility covenants would result in an event of default and accelerate the repayment of all unpaid principal and interest and the termination of any letters of credit. All of our domestic assets and certain interests in some foreign subsidiaries are pledged as collateral under the three-year Credit Facility Agreement. In addition, the terms of the Credit Facility limit our ability to pay dividends. We are required to report our annual financial statements and debt covenant compliance certificates to our lender within 90 days after the end of our fiscal year end. We obtained a waiver from our lender which extended our covenant compliance reporting requirement from within 90 days after fiscal year end to within 120 days. We were in compliance with all our financial covenants as of the end of each quarter during the fiscal year ended April 30, 2013.

Interest on the Credit Facility is based on the bank’s prime rate or LIBOR rate plus a percentage spread between 0.00% and 2.25% depending on whether it uses the bank’s prime rate or LIBOR rate and based on our current leverage ratio. We also pay an annual letter of credit fee ranging from 1.25% to 2.25% of the amount available to be drawn under each outstanding stand-by letter of credit. The annual letter of credit fee is payable quarterly in arrears and varies depending on our leverage ratio.

We expect to be in compliance with our covenants pursuant to the Credit Facility Agreement for at least the next twelve months. However, in the event that there is a possibility of default, we may institute further cost reductions; raise additional funds through public or private debt or sale of equity; possibly seek amendments to our Credit Facility Agreement or a combination of these items.

There were no outstanding borrowings on this Credit Facility as of April 30, 2013. Consequently, we had $16.6 million available under this Credit Facility, net of $8.4 million in outstanding letters of credit.

On May 31, 2013, we amended our existing Credit Facility Agreement, set to mature on March 2, 2014, and entered into a new four-year Credit Facility Agreement which will mature May 31, 2017. We increased our total commitment under the new credit facility to $40.0 million to provide us more flexibility given the longer term of the agreement, and allow for changes in working capital needs as we continue to grow our business in the future. The financial covenant ratios under the new Credit Facility remain unchanged, requiring that we maintain a maximum leverage ratio of 2.75x and a minimum Fixed Charge

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Coverage Ratio of 1.75x. Interest charges continue to be based on the bank's prime rate or LIBOR rate plus a percentage spread between 0.00% and 2.25% and based on the our current leverage ratio. All of our domestic assets and certain interests in some foreign subsidiaries will continue to be pledged as collateral under the amended Credit Facility.

We have an unsecured credit facility in Taiwan and there were no outstanding balances under the credit facility as of April 30, 2013. The unsecured commitment for the Taiwan credit facility totaled $1.4 million at April 30, 2013, bearing interest at 2.6% per annum.

Uses of Cash

Capital Expenditures

Our capital spending plans currently provide for outlays ranging from approximately $6 to $8 million over the next twelve months, primarily related to investments in machinery and equipment to support manufacturing, other information technology related projects, as well as patent and trademark maintenance. It is expected that funds necessary for these expenditures will be generated internally or from available financing. To the extent that sufficient funds cannot be generated through operations or we are unable to obtain financing on reasonable terms, we may reduce our capital expenditures accordingly. Our capital spending for the each of the respective fiscal years ended April 30, 2013, 2012, and 2011 amounted to $6.6 million, $4.6 million, and $3.5 million.

Repayment of Debt

Our debt primarily consists of our subordinated notes and outstanding borrowings on our Credit Facility. We did not have any borrowings outstanding on our Credit Facility as of April 30, 2013 or April 30, 2012. Activity on our Credit Facility will fluctuate to augment our working capital needs. The subordinated notes, aggregating to $10.8 million of principal and interest, are due August 2013. In prior periods we have had balances outstanding, and therefore had net borrowings or repayments in a particular prior year comparative period.

Disclosures about Contractual Obligations and Commercial Commitments

The following table summarizes our known future payments pursuant to certain contracts as of April 30, 2013 and the estimated timing thereof. More detail about our contractual obligations and commercial commitments are in Note 6 - Debt and Note 7 -Commitments and Contingencies of the Notes to the Consolidated Financial Statements included in Item 8, Financial Statements and Supplementary Data.

	Payment by Fiscal Year
	2014		2015		2016		2017		2018		Thereafter		Total
	(In thousands)
Operating Leases	$	3,132	$	2,817	$	2,527	$	1,625	$	1,547	$	2,588	$	14,236
Long-term Debt, Notes Payable & Capital Leases	68		31		14		—		—		—		113
Purchase Commitments (i)	13,577		—		—		—		—		—		13,577
Subordinated Notes (ii)	10,824		—		—		—		—		—		10,824
Consulting Agreements	39		—		—		—		—		—		39
Professional Service Retainers	20		—		—		—		—		—		20
Liabilities related to Unrecognized Tax benefits, including Interest and Penalties (iii)	732		—		—		—		—		6,950		7,682
Total	$	27,661	$	2,848	$	2,541	$	1,625	$	1,547	$	2,595	$	38,817

i. Purchase commitments include agreements to purchase goods or services that are enforceable, are legally binding and specify all significant terms, including fixed or minimum quantities to be purchased; fixed, minimum or variable price provisions; and the approximate timing of the transaction. Purchase obligations do not include agreements that are cancelable without penalty.

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ii. Subordinated promissory notes with an aggregate face value of $10 million, due August 2013 along with accumulated interest.

iii. We have unrecognized tax benefits of $7.7 million associated with uncertain tax positions as of April 30, 2013. This potential liability may result in cash payments to tax authorities. We estimate a reduction in our unrecognized tax benefits of approximately $0.7 million to occur within the next twelve months.

Off-Balance Sheet Arrangements

As of April 30, 2013, we had stand-by letter of credit reimbursement agreements totaling $8.4 million compared to $4.0 million at April 30, 2012. These stand-by letter of credit agreements relate to performance on contracts with our customers and vendors.

Critical Accounting Estimates

Our discussion and analysis of the financial condition and results of operations are based upon the consolidated financial statements, which have been prepared in accordance with accounting principles generally accepted in the United States. The preparation of these consolidated financial statements requires us to make certain assumptions and estimates about future events, and apply judgments that affect the reported amount of assets and liabilities, revenues and expenses, and related disclosure of contingent assets and liabilities at the date of our consolidated financial statements. We base our assumptions, estimates, and judgment on historical experience, current trends and other factors which management believes to be relevant and appropriate at the time our consolidated financial statements are prepared. On a regular basis, management reviews its assumptions, estimates, and judgments to ensure that our consolidated financial statements are presented fairly. However, because future events cannot be determined with certainty, actual results may differ from our assumptions and estimates, and such differences could be material.

Our significant accounting policies are summarized in Note 1 -The Company and Summary of Significant Accounting Policies of the Notes to the Consolidated Financial Statements included in Item 8, Financial Statements and Supplementary Data. Management identifies its most critical accounting policies as those that are the most pervasive and important to the portrayal of our financial position and results of operations, and that require the most difficult, subjective and/or complex judgments by management regarding estimates that are inherently uncertain.

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Accounting Policy	Judgments/Uncertainties Affecting Application
Impairment of Long Lived Assets	-	Judgment about triggering events
	-	Recoverability of investments through future operations
	-	Estimated useful lives of assets
	-	Estimates of future cash flows
Valuation of Deferred Tax Assets and Uncertain Tax Positions	-	Ability of tax authority decisions to withstand legal challenges and appeals
	-	Anticipated future decisions of tax authorities
	-	Application of tax statutes and regulations to transactions
	-	Ability to utilize tax benefits through carrybacks to prior periods and carryforwards to future periods
Contingencies	-	Judgment about likelihood of event(s) occurring
	-	Estimated financial impact of event(s)
	-	Regulatory and political environments and requirements
Revenue Recognition	-	Judgment regarding the relative selling price in multiple element arrangements
	-	Estimates about anticipated contract costs and progress made towards the completion of projects
Allowance for Doubtful Accounts	-	Judgment regarding the amount of probable credit loss on existing receivables
Inventory Reserves	-	Judgment regarding inventory aging, forecasted consumer demand, the promotional environment and technological obsolescence
	-	Application of judgment regarding historical results and current inventory loss trends
Warranty Liability	-	Judgment regarding historical experience to estimate future liability
Cost Method Investments	-	Judgment about fair value
	-	Recoverability of investments

Impairment of Long Lived Assets

We routinely consider whether indicators of impairment are present for our long-lived assets, which consist of property and equipment, particularly our manufacturing equipment, and patents subject to amortization and depreciation. Factors we consider include, but are not limited to, significant underperformance relative to historical or projected operating results; significant changes in the manner of use of long-lived assets or the strategy for the overall business; and significant negative industry or economic trends. If such indicators are present, we determine whether the sum of the estimated undiscounted cash flows attributable to the asset group in question is less than their carrying value. For purposes of impairment testing, long-lived assets are grouped at the component level, which for us is by regional locations, as this is the lowest level for which identifiable cash flows are largely independent of the cash flows of other assets and liabilities. If the sum of the undiscounted cash flows attributable to the asset group is less than the carrying value of the asset group, an impairment loss is recognized based on the excess of the carrying value of the asset group over its respective fair value. Fair value is determined by discounting estimated future cash flows, appraisals or other methods deemed appropriate. If the asset group determined to be impaired is to be held and used, we recognize an impairment charge to the extent the present value of anticipated net cash flows attributable to the asset group is less than the assets' carrying value. The fair value of the assets then becomes the assets' new carrying value, which is amortized or depreciated over the remaining estimated useful life of the assets.

We concluded that there were no long-lived assets impairment indicators in each of the fiscal years ended April 30, 2013, 2012, and 2011. We will continue to monitor circumstances and events in future periods to determine whether asset impairment testing is warranted based on the existence of one or more of the above impairment indicators.

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Valuation of Deferred Tax Assets and Uncertain Tax Positions

We account for uncertain tax positions in accordance with ASC 740 which utilizes a two-step approach for evaluating tax positions. Recognition (Step 1) occurs when an enterprise concludes that a tax position, based solely on its technical merits, is more likely than not to be sustained upon examination. Measurement (Step 2) is only addressed if Step 1 has been satisfied. Under Step 2, the tax benefit is measured at the largest amount of benefit, determined on a cumulative probability basis that is more likely than not to be realized upon settlement. As used in ASC 740, the term “more likely than not” means that the likelihood of an occurrence is greater than 50%. To the extent that we prevail in matters for which unrecognized tax benefits have been established, or are required to pay amounts in excess of our unrecognized tax benefits, our effective tax rate in a given financial statement period could be materially affected. An unfavorable tax settlement would require the use of our cash and would result in an increase to our effective income tax rate in the period of resolution. A favorable tax settlement would be recognized as a reduction in our effective income tax rate in the period of resolution.

Our annual effective tax rate is based on income, statutory tax rates and tax planning strategies available in various jurisdictions in which we operate. Tax laws are complex and subject to different interpretations by the taxpayer and respective governmental taxing authorities. Significant judgment is required in determining our tax expense and in evaluating tax positions. Tax positions are reviewed quarterly and balances are adjusted as new information becomes available. Deferred income tax assets and liabilities are recognized for the estimated future tax consequences attributable to temporary differences between the consolidated financial statement carrying amounts of existing assets and liabilities and their respective tax bases. These assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which the temporary differences are expected to reverse. Future tax benefits of tax losses and credit carryforwards are recognized to the extent that realization of these benefits is considered more likely than not. In evaluating our ability to recover our deferred tax assets, we consider all available positive and negative evidence including our past operating results, the existence of cumulative net operating losses in the most recent years and our forecast of future taxable income. In estimating future taxable income, we develop assumptions including the amount of future federal, state and foreign pre-tax operating income, the reversal of temporary differences and the implementation of feasible and prudent tax planning strategies. These assumptions require significant judgment about the forecasts of future taxable income and are consistent with the plans and estimates we use to manage our business.

As of April 30, 2013, we had approximately $43.2 million of domestic net operating loss and $33.0 million of state net operating loss carryforwards to offset certain earnings for federal and state income tax purposes. These net operating loss carryforwards expire between fiscal year 2023 and fiscal year 2031. Net operating loss carryforwards in foreign jurisdictions amount to $38.4 million. A valuation allowance of $23.8 million has been provided against these net operating loss carryforwards in certain of our foreign jurisdictions as realization of the tax benefit in those jurisdictions is uncertain. Most of the foreign net operating losses can be carried forward indefinitely, with certain amounts expiring between fiscal years 2016 and 2020. The federal, state and foreign net operating loss carryforwards per the income tax returns filed include uncertain tax positions taken in prior years. Due to the application of ASC 740, the net operating loss carryforwards per the income tax returns are larger than the net operating loss carryforwards considered more likely than not to be realized in recognizing deferred tax assets for consolidated financial statement purposes. We also have a capital loss carryover of $1.3 million, for which we provide a valuation allowance that expires after 2017. Utilization of net operating losses may be subject to limitation due to ownership changes and other limitations provided by the Internal Revenue code and similar state provisions. If such a limitation applies, the net operating loss may expire before full utilization.

Our income tax returns are periodically audited by domestic and foreign tax authorities. These audits include questions regarding our filing tax positions, including the timing and amount of deductions and the allocation of income among various tax jurisdictions. At any one time, multiple tax years are subject to audit by the various tax authorities.

Contingencies

At any time, we may be involved in legal proceedings or other claims and assessments arising in the normal course of business. Our policy is to routinely assess the likelihood of any adverse judgments or outcomes related to these matters, as well as ranges of probable losses. A determination of the amount of the reserves required, if any, for these contingencies is based on historical experience and/or after analysis of each known issue. We record reserves related to these matters for which it is probable that a loss has been incurred and the range of such loss can be estimated. With respect to other matters, management has concluded that a loss is only reasonably possible or remote and, therefore, no liability is recorded. Management discloses the facts regarding material matters assessed as reasonably possible and potential exposure, if determinable. Costs incurred defending claims are expensed as incurred. As of April 30, 2013, we have accrued our estimate of the probable liabilities for the settlement of these claims. Refer to Note 7 -Commitments and Contingencies of the Notes to the Consolidated Financial Statements included in Item 8, Financial Statements and Supplementary Data.

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Revenue Recognition

We sell ultrahigh-pressure waterjet systems. Sales of waterjet systems within the Standard segment are primarily related to cutting and surface preparation systems using ultrahigh-pressure water pumps and do not require significant custom configuration or modifications. Installation of these waterjet systems by us is not essential to the functionality of the waterjet systems, but we do provide installation as a separate service. Sales of waterjet systems within the Advanced segment are generally complex aerospace and automation systems, which require specific custom configuration and advanced features to match unique customer applications. Installation by us is essential to the functionality of waterjet systems sold within the Advanced segment.

We recognize revenue, net of excise and sales taxes, when it is realized or realizable and earned. We consider these criteria met when persuasive evidence of an arrangement exists, delivery has occurred or services have been rendered, the sales price is fixed or determinable, and collectibility is reasonably assured.

We recognize revenue for sales of ultrahigh-pressure waterjet pumps, consumables, and services, and billing for freight charges, in accordance with Accounting Standard Codification ("ASC") 605, Revenue Recognition, (“ASC 605”), when the customer has assumed risk of loss of the goods sold and all performance obligations are complete, or over the period as services are rendered.

We recognize revenue for our Standard segment waterjet systems which do not require significant modification or customization in accordance with ASC 605-25, Multiple-Element Arrangements. Standard segment waterjet systems contain two separate deliverables consisting of the system and installation services. The deliverables are treated as separate units of accounting. Standard segment waterjet systems also include a proprietary software component which functions together with the hardware to deliver the systems' essential functionality. We perform an analysis to determine the relative selling price of each unit of accounting, and we have established vendor-specific objective evidence ("VSOE") for our system hardware and installation services based on standalone transactions.

We allocate consideration to our deliverables at the inception of an arrangement based on their relative selling price, and the applicable revenue recognition criteria are applied to each of the separate units of accounting. In instances where we have not established VSOE for our Standard segment waterjet deliverables, we will use the estimated selling price in accordance with the selling price hierarchy to allocate arrangement consideration to each unit of accounting until such time that VSOE exists. Estimated selling prices would be determined by considering multiple factors, which may include existing and forecasted market conditions, internal costs, gross margin objectives, prior pricing practices, and geographic market strategies. We use estimated selling prices in the absence of VSOE since we are unable to establish comparable third-party evidence of selling price for our deliverables based on limited availability of information and the level of customization and differentiation of similar products. Furthermore, we are unable to reliably determine what similar competitor product selling prices are on a standalone basis.

In general, sales of the our waterjet systems within our Standard segment are FOB shipping point or FOB destination, depending on geographical location, and the title passes to the customer based on the specific terms in each contract.

Deferred revenue is recorded for products or services that have not been provided but have been invoiced under contractual agreements or paid for by a customer, or when products or services have been provided but all the criteria for revenue recognition have not been met.

For complex aerospace and application systems designed and manufactured to buyers' specification, we recognize revenue using the percentage of completion method in accordance with ASC 605-35, Construction-Type and Production-Type Contracts. Typical lead times can range from 12 to 24 months. Sales and profits on such contracts are recorded based on the ratio of total actual incurred costs to date to the total estimated costs for each contract (the “cost-to-cost” method). We review these estimates as work progresses and the effect of any change in cost estimates is reflected in the calculation of the expected margin and the percent complete. If the contract is projected to generate a loss, the entire estimated loss is recognized in the period such loss first becomes known. Accounting for the profit on a contract requires (1) the total contract value, (2) the estimated total cost to complete, which is equal to the sum of the actual incurred costs to date on the contract and the estimated costs to complete the scope of work, and (3) the measurement of progress towards completion. The estimated profit or loss on a contract is equal to the difference between the contract value and the estimated total cost to completion. Adjustments to original cost estimates may be required as work progresses under a contract, as experience is gained and as more information is obtained, even though the scope of work required under the contract may not change, or if contract modifications occur. For contract modifications supported by a change in contract price, profit on such contract modifications are only recognized upon receipt of a signed contract amendment and only in the proportion of such contract's progress towards completion. For

33

modifications not supported by a change in contract price, those additional costs are treated as contract costs and charged to expense in the proportion of such contract's progress towards completion.

A number of internal and external factors affect our cost of sales estimates, including material costs, labor rates and efficiency variances and installation and testing requirements. While we believe that our historical experience provides a sound basis for our estimates, changes in the customer's requirements, design or other changes in the specifications, or in the timing of delivery and installation may affect the timing of revenue related to, or the gross margin on, a system if they are substantially different from what was anticipated. The complexity of the estimation process and issues related to the assumptions, risks and uncertainties inherent with the application of the percentage of completion method affect the amounts reported in our financial statements.

Shipping revenues and expenses are recorded in revenue and cost of goods sold, respectively.

Allowance for Doubtful Accounts

The allowance for doubtful accounts is our best estimate of the amount of probable credit losses on existing receivables. We estimate the allowance based on the age of the related receivables, knowledge of the financial condition of our customers, review of historical receivables and reserve trends and other relevant information. Account balances are charged against the allowance when management determines that it is probable the receivable will not be recovered.

Valuation of Obsolete/Excess Inventory

We currently write-down obsolete or excess parts and equipment inventory that is no longer used due to design changes to our products or lack of customer demand. We regularly monitor our inventory levels and, if we identify an excess condition based on our usage, we record a corresponding inventory reserve which establishes a new cost basis for our inventory. Subsequent changes in facts or circumstances do not result in the reversal of previously recorded markdowns or an increase in that newly established cost basis. The amount of inventory write-down requires the use of management judgment regarding technological obsolescence and forecasted customer demand. If estimates regarding consumer demand are inaccurate or changes in technology affect demand for certain products in an unforeseen manner, we may be exposed to losses that could be material.

Warranty Liability

Products are warranted to be free from material defects for a period of at least one year from the date of installation. Warranty obligations are limited to the repair or replacement of products. Warranty liability is recorded at time of the sale. Flow's warranty accrual is reviewed quarterly by management for adequacy based upon recent shipments and historical warranty experience. Credit is issued upon receipt of the returned goods, or, if material, at the time of notification and approval.

Valuation of Cost Method Investments

We evaluate our cost method investments for impairment on a quarterly basis in accordance with ASC 325, Cost Method Investments, which specifically addresses accounting for cost method investments subsequent to initial measurement. An impairment charge is recorded whenever a decline in value of an investment below its carrying amount is determined to be other-than-temporary. In determining if a decline is other-than-temporary, factors such as the length of time and extent to which the fair value of the investment has been less than the carrying amount of the investment, the near-term and longer-term operating and financial prospects of the affiliate and the intent and ability to hold the investment for a period of time sufficient to allow for any anticipated recovery are considered.

34

Item 7A. Quantitative and Qualitative Disclosures About Market Risk

The types of market risk we are exposed to in our normal business activities are interest rate risk and currency exchange risk.

Interest Rate Risk

We are subject to fluctuations in interest rates through our issuance of variable rate debt, which includes borrowings against our Credit Facility and outstanding stand-by letters of credit. We did not have any borrowings outstanding on our Credit Facility as of April 30, 2013, and interest charged on outstanding stand-by letters of credit was not material for any of the fiscal years presented.

Foreign Currency Exchange Rate Risk

We transact business in a number of countries around the world and as a result are exposed to changes in foreign currency exchange rates. Costs in some countries are incurred, in part, in currencies other than the applicable functional currency. Approximately 58% of our total consolidated sales related to operations outside the United States. Based on our results for the year ended April 30, 2013 for our foreign subsidiaries, a hypothetical 10% favorable and unfavorable change in foreign currency exchange rates would have affected our annualized foreign-currency-denominated operating results by approximately $6.8 million. Our consolidated financial position and cash flows could be similarly impacted. We may from time to time selectively utilize forward exchange rate contracts, which we may or may not designate as cash flow hedges, to protect against the adverse effect exchange rate fluctuations may have on foreign currency denominated accounts receivable and accounts payable (both trade and inter-company).

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Item 8. Financial Statements and Supplementary Data

The following consolidated financial statements are filed as a part of this report:

	Page in this
Index to Consolidated Financial Statements	Report
Report of Independent Registered Public Accounting Firm	37
Consolidated Balance Sheets April 30, 2013 and 2012	38
Consolidated Statements of Operations Fiscal years ended April 30, 2013, 2012, and 2011	39
Consolidated Statements of Comprehensive Income Fiscal years ended April 30, 2013, 2012, and 2011	40
Consolidated Statements of Cash Flows Fiscal years ended April 30, 2013, 2012, and 2011	41
Consolidated Statements of Shareholders' Equity Fiscal years ended April 30, 2013, 2012, and 2011	42
Notes to Consolidated Financial Statements	43
Financial Statement Schedule
Schedule II Valuation and Qualifying Accounts	64

36

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Board of Directors and Shareholders of

Flow International Corporation

Kent, Washington

We have audited the accompanying consolidated balance sheets of Flow International Corporation and subsidiaries (the "Company") as of April 30, 2013 and 2012, and the related consolidated statements of operations, comprehensive income, shareholders' equity, and cash flows for each of the three years in the period ended April 30, 2013. Our audits also included the financial statement schedule listed in the Index at Item 15. These financial statements and financial statement schedule are the responsibility of the Company's management. Our responsibility is to express an opinion on the financial statements and financial statement schedule 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, such consolidated financial statements present fairly, in all material respects, the financial position of Flow International Corporation and subsidiaries as of April 30, 2013 and 2012, and the results of their operations and their cash flows for each of the three years in the period ended April 30, 2013, in conformity with accounting principles generally accepted in the United States of America. Also, in our opinion, such financial statement schedule, when considered in relation to the basic consolidated financial statements taken as a whole, presents fairly, in all material respects, the information set forth therein.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the Company's internal control over financial reporting as of April 30, 2013, based on the criteria established in Internal Control-Integrated Framework (1992) issued by the Committee of Sponsoring Organizations of the Treadway Commission and our report dated July 30, 2013, expressed an adverse opinion on the Company's internal control over financial reporting because of material weaknesses.

/s/ Deloitte & Touche LLP

Seattle, Washington

July 30, 2013

37

FLOW INTERNATIONAL CORPORATION
CONSOLIDATED BALANCE SHEETS
(In thousands, except par values)
	April 30,
	2013			2012
ASSETS
Current Assets:
Cash and Cash Equivalents	$	15,465		$	12,942
Restricted Cash	—			1,435
Receivables, net	42,741			46,830
Inventories	41,059			40,069
Other Current Assets	17,194			14,269
Total Current Assets	116,459			115,545
Property and Equipment, net	17,894			17,488
Intangible Assets, net	5,120			4,936
Deferred Income Taxes, net	16,515			23,304
Other Long-Term Assets	6,105			5,793
Total Assets	$	162,093		$	167,066
LIABILITIES AND SHAREHOLDERS’ EQUITY
Current Liabilities:
Subordinated Notes	$	10,559		$	—
Accounts Payable	17,166			22,577
Accrued Payroll and Related Liabilities	7,078			7,774
Taxes Payable and Other Accrued Taxes	3,908			3,735
Deferred Revenue and Customer Deposits	7,340			13,910
Other Accrued Liabilities	11,213			11,104
Total Current Liabilities	57,264			59,100
Deferred Income Taxes	6,313			5,777
Subordinated Notes	—			9,587
Other Long-Term Liabilities	1,782			1,554
Total Liabilities	65,359			76,018
Commitments and Contingencies
Shareholders’ Equity:
Series A 8% Convertible Preferred Stock, $.01 par value, 1,000 shares authorized; no shares issued and outstanding	—			—
Common Stock, $.01 par value, 84,000 shares authorized; 48,452 and 47,891 shares issued and outstanding	484			474
Capital in Excess of Par	166,737			164,882
Accumulated Deficit	(64,635		)	(69,672		)
Accumulated Other Comprehensive Loss:
Defined Benefit Plan Obligation, net of income tax	(127		)	(81		)
Cumulative Translation Adjustment, net of income tax	(5,725		)	(4,555		)
Total Shareholders’ Equity	96,734			91,048
Total Liabilities and Shareholders’ Equity	$	162,093		$	167,066
See Accompanying Notes to the Consolidated Financial Statements

38

FLOW INTERNATIONAL CORPORATION
CONSOLIDATED STATEMENTS OF OPERATIONS
(In thousands, except per share amounts)
	Fiscal Year Ended April 30,
	2013			2012			2011
Sales	$	259,338		$	253,768		$	216,524
Cost of Sales	161,416			154,400			132,063
Gross Margin	97,922			99,368			84,461
Operating Expenses:
Sales and Marketing	50,251			49,454			45,359
Research and Engineering	11,431			10,863			10,074
General and Administrative	23,573			24,382			24,141
Total Operating Expenses	85,255			84,699			79,574
Operating Income	12,667			14,669			4,887
Interest Income	224			62			106
Interest Expense	(1,573		)	(1,112		)	(1,776		)
Other Income (Expense), net	(1,017		)	(954		)	686
Income Before Taxes	10,301			12,665			3,903
Provision for Income Taxes	(5,129		)	(3,276		)	(2,895		)
Income from Continuing Operations	5,172			9,389			1,008
Income (Loss) from Discontinued Operations, net of Income Tax	(135		)	60			(242		)
Net Income	$	5,037		$	9,449		$	766
Basic and Diluted Income Per Share:
Income from Continuing Operations	$	0.11		$	0.20		$	0.02
Discontinued Operations	(0.01		)	—			—
Net Income	$	0.10		$	0.20		$	0.02
Weighted Average Shares Used in Computing Basic and Diluted Income Per Share:
Basic	48,312			47,766			47,216
Diluted	49,060			47,766			47,228
See Accompanying Notes to Consolidated Financial Statements

39

FLOW INTERNATIONAL CORPORATION
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
(In thousands)
	Fiscal Year Ended April 30,
	2013			2012			2011
Net Income	$	5,037		$	9,449		$	766
Other Comprehensive Income (Loss):
Adjustment to Minimum Pension Liability, net of tax	(46		)	(13		)	(77		)
Cumulative Translation Adjustment, net of tax	(1,170		)	(988		)	1,001
Total Comprehensive Income	$	3,821		$	8,448		$	1,690
See Accompanying Notes to Consolidated Financial Statements

40

FLOW INTERNATIONAL CORPORATION
CONSOLIDATED STATEMENTS OF CASH FLOWS
(In thousands)
	Fiscal Year Ended April 30,
	2013			2012			2011
Cash Flows from Operating Activities:
Net Income	$	5,037		$	9,449		$	766
Adjustments to Reconcile Net Income to Cash Provided by Operating Activities:
Depreciation and Amortization	5,919			6,208			6,302
Deferred Income Taxes	3,085			720			2,368
Provision for Slow Moving and Obsolete Inventory	224			477			884
Bad Debt Expense	338			531			434
Warranty Expense	5,880			4,235			2,695
Incentive Stock Compensation Expense	2,513			3,546			2,347
Unrealized Foreign Exchange Currency (Gains) Losses	448			587			(412		)
Amortization and Write-off of Deferred Debt Issuance Costs	35			38			402
Indemnification Charge	135			(60		)	242
Interest Accretion on Subordinated Notes	972			864			769
Other	235			119			261
Changes in Operating Assets and Liabilities:
Receivables	2,709			(2,071		)	(10,051		)
Inventories	(2,373		)	(13,368		)	(6,392		)
Other Operating Assets	(1,001		)	(1,246		)	(2,485		)
Accounts Payable	(4,891		)	4,672			2,088
Accrued Payroll and Related Liabilities	(1,097		)	609			694
Deferred Revenue and Customer Deposits	(6,358		)	1,282			2,406
Other Operating Liabilities	(3,923		)	(3,881		)	(393		)
Net Cash Provided by Operating Activities	7,887			12,711			2,925
Cash Flows From Investing Activities:
Expenditures for Property and Equipment	(5,820		)	(3,947		)	(2,675		)
Expenditures for Intangible Assets	(786		)	(654		)	(855		)
Proceeds from Sale of Property and Equipment	243			98			30
Restricted Cash	1,400			185			(959		)
Net Cash Used in Investing Activities	(4,963		)	(4,318		)	(4,459		)
Cash Flows from Financing Activities:
Borrowings Under Credit Facility	37,990			63,450			51,050
Repayments Under Credit Facility	(37,990		)	(68,950		)	(45,900		)
Borrowings (Repayments) Under Other Financing Arrangements	28			5			(36		)
Net Cash Provided by (Used In) Financing Activities	28			(5,495		)	5,114
Effect of Changes in Exchange Rates	(429		)	948			(851		)
Net Change in Cash And Cash Equivalents	2,523			3,846			2,729
Cash and Cash Equivalents, Beginning of Year	12,942			9,096			6,367
Cash and Cash Equivalents, End of Year	$	15,465		$	12,942		$	9,096
Supplemental Disclosures of Cash Flow Information:
Cash Paid during the Year for:
Interest	$	196		$	300		$	403
Income Taxes	2,381			1,252			950
Supplemental Disclosures of Noncash Investing Activities:
Accounts Payable Incurred to Acquire Property and Equipment and Intangible Assets	$	781		$	949		$	135
See Accompanying Notes to Consolidated Financial Statements

41

FLOW INTERNATIONAL CORPORATION
CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY
(In thousands)
	Common Stock			Capital In Excess of Par					Accumulated Other Comprehensive Loss			Total Shareholders' Equity
	Shares	Par Value				Accumulated Deficit
Balances, April 30, 2010	46,927	$	465	$	159,605	$	(79,887	)	$	(4,559	)	$	75,624
Net Income						766						766
Other Comprehensive Income, net of tax									924			924
Stock Compensation	451	4		2,136								2,140
Balances, April 30, 2011	47,378	$	469	$	161,741	$	(79,121	)	$	(3,635	)	$	79,454
Net Income						9,449						9,449
Other Comprehensive Loss, net of tax									(1,001		)	(1,001		)
Stock Compensation	513	5		3,141								3,146
Balances, April 30, 2012	47,891	$	474	$	164,882	$	(69,672	)	$	(4,636	)	$	91,048
Net Income						5,037						5,037
Other Comprehensive Loss, net of tax									(1,216		)	(1,216		)
Stock Compensation	561	10		1,855								1,865
Balances, April 30, 2013	48,452	$	484	$	166,737	$	(64,635	)	$	(5,852	)	$	96,734
See Accompanying Notes to Consolidated Financial Statements

42

FLOW INTERNATIONAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(All tabular amounts in thousands, except share and option amounts)

Note 1: The Company and Summary of Significant Accounting Policies

Reporting Policies

Operations and Segments

Flow International Corporation and its subsidiaries (hereinafter collectively referred to as “the Company”, “we”, or “our” unless the context requires otherwise) is a global technology-based manufacturing company committed to providing a world class customer experience. The Company offers technological leadership and exceptional waterjet performance to a wide-ranging customer base, benefiting many cutting and surface preparation applications, delivering profitable waterjet solutions, and dynamic business growth opportunities for our customers. Our ultrahigh-pressure water pumps generate pressures from 40,000 to over 94,000 pounds per square inch (psi) and power waterjet systems that are used to cut materials, remove coatings, and prepare surfaces for coating. Waterjet cutting and cleaning is a fast-growing alternative to traditional methods, such as lasers, saws, knives, shears, plasma, electrical discharge machining ("EDM"), routers, drills, soda blasting and abrasive blasting techniques, and has uses in many applications from food and paper products to steel and carbon fiber composites.

The Company reports its operating results to its Chief Executive Officer, who is the chief operating decision maker, based on market segments, which is consistent with management's long-term growth strategy. The Company has two reportable segments: Standard and Advanced. The Standard segment includes sales and cost of sales related to the Company's cutting and surface preparation systems using ultrahigh-pressure water pumps, as well as parts and services to sustain these installed systems. Systems included in this segment do not require significant custom configuration. The Advanced segment includes sales and cost of sales related to complex Advanced segment systems which require specific custom configuration and advanced features, including robotics, to match unique customer applications.

Financial information about the Company's segments is included in Note 14 -Business Segments and Geographic Information.

Principles of Consolidation

The consolidated financial statements include the accounts of Flow International Corporation and its wholly-owned subsidiaries. All intercompany transactions and accounts have been eliminated in consolidation. The Company accounts for its investments in non-marketable equity securities of less than 20% ownership that do not have a readily determinable fair value under the cost method of accounting.

Foreign Currency Translation

The local currency is the functional currency for all operations outside of the United States. Assets and liabilities are translated at the exchange rate in effect as of our balance sheet date. Revenues and expenses are translated at the average monthly exchange rates throughout the year. The effects of exchange rate fluctuations in translating assets and liabilities of international operations into U.S. dollars are accumulated and reflected as a cumulative translation adjustment in the accompanying Consolidated Statements of Comprehensive Income.

Use of Estimates

The Company prepares its consolidated financial statements in conformity with accounting principles generally accepted in the United States of America. The preparation of these consolidated financial statements requires management to make certain assumptions and estimates about future events, and apply judgments that affect the reported amount of assets and liabilities, revenues and expenses, and related disclosure of contingent assets and liabilities at the date of the consolidated financial statements. The Company bases its assumptions, estimates, and judgment on historical experience, current trends and other factors which management believes to be relevant and appropriate at the time the consolidated financial statements are prepared. Actual results could differ from management's estimates and assumptions.

43

Accounting for Certain Key Items

This section provides information about how the Company accounts for certain key items related to:

•operations;

•capital investments; and

•financing its business.

Policies related to Operations

Revenue Recognition

The Company sells ultrahigh-pressure waterjet systems. Sales of waterjet systems within the Standard segment are primarily related to the Company's cutting and surface preparation systems using ultrahigh-pressure water pumps and do not require significant custom configuration or modifications. Installation of these waterjet systems by the Company is not essential to the functionality of the waterjet systems, but the Company does provide installation as a separate service. Sales of waterjet systems within the Advanced segment are generally complex aerospace and automation systems, which require specific custom configuration and advanced features to match unique customer applications. Installation by the Company is essential to the functionality of waterjet systems sold within the Advanced segment.

The Company recognizes revenue, net of excise and sales taxes, when it is realized or realizable and earned. The Company considers these criteria met when persuasive evidence of an arrangement exists, delivery has occurred or services have been rendered, the sales price is fixed or determinable, and collectibility is reasonably assured.

Revenue for sales of ultrahigh-pressure waterjet pumps, consumables and services, and billing for freight charges, is recognized by the Company in accordance with Accounting Standard Codification ("ASC") 605, Revenue Recognition, (“ASC 605”), when the customer has assumed risk of loss of the goods sold and all performance obligations are complete, or over the period as services are rendered.

The Company recognizes revenue on its Standard segment waterjet systems which do not require significant modification or customization in accordance with ASC 605-25, Multiple-Element Arrangements. Standard segment waterjet systems contain two separate deliverables consisting of the system and installation services. The deliverables are treated as separate units of accounting. Standard segment waterjet systems also include a proprietary software component which functions together with the hardware to deliver the systems' essential functionality. Management performs an analysis to determine the relative selling price of each unit of accounting, and it has established vendor-specific objective evidence ("VSOE") for its system hardware and installation services based on standalone transactions.

The Company allocates consideration received to its deliverables at the inception of an arrangement based on their relative selling price, and the applicable revenue recognition criteria are applied to each of the separate units of accounting. In instances where the Company has not established VSOE for its Standard segment waterjet deliverables, it will use the estimated selling price ("ESP") in accordance with the selling price hierarchy to allocate arrangement consideration to each unit of accounting until such time that VSOE exists. Estimated selling prices would be determined by considering multiple factors, which may include existing and forecasted market conditions, internal costs, gross margin objectives, prior pricing practices, and geographic market strategies. The Company uses estimated selling prices in the absence of VSOE since it is unable to establish comparable third-party evidence of selling price for its deliverables based on limited availability of information and the level of customization and differentiation of similar products. Furthermore, the Company is unable to reliably determine what similar competitor product selling prices are on a standalone basis.

In general, sales of the Company's waterjet systems within its Standard segment are FOB shipping point or FOB destination, depending on geographical location, and the title passes to the customer based on the specific terms in each contract.

Deferred revenue is recorded for products or services that have not been provided but have been invoiced under contractual agreements or paid for by a customer, or when products or services have been provided but all the criteria for revenue recognition have not been met.

For complex aerospace and application systems designed and manufactured to buyers' specification, the Company recognizes revenue using the percentage of completion method in accordance with ASC 605-35, Construction-Type and Production-Type Contracts. Typical lead times can range from 12 to 24 months. Sales and profits on such contracts are recorded based on the ratio of total actual incurred costs to date to the total estimated costs for each contract (the “cost-to-cost”

44

method). Management reviews these estimates as work progresses and the effect of any change in cost estimates is reflected in the calculation of the expected margin and the percent complete. If the contract is projected to generate a loss, the entire estimated loss is recognized in the period such loss first becomes known. Accounting for the profit on a contract requires (1) the total contract value, (2) the estimated total cost to complete, which is equal to the sum of the actual incurred costs to date on the contract and the estimated costs to complete the scope of work, and (3) the measurement of progress towards completion. The estimated profit or loss on a contract is equal to the difference between the contract value and the estimated total cost to completion. Adjustments to original cost estimates may be required as work progresses under a contract, as experience is gained and as more information is obtained, even though the scope of work required under the contract may not change, or if contract modifications occur. For contract modifications supported by a change in contract price, profit on such contract modifications are only recognized upon receipt of a signed contract amendment and only in the proportion of such contract's progress towards completion. For modifications not supported by a change in contract price, those additional costs are treated as contract costs and charged to expense in the proportion of such contract's progress towards completion.

A number of internal and external factors affect the Company's cost of sales estimates, including material costs, labor rates and efficiency variances and installation and testing requirements. While management believes that the Company's historical experience provides a sound basis for its estimates, changes in the customer's requirements, design or other changes in the specifications, or in the timing of delivery and installation may affect the timing of revenue related to, or the gross margin on, a system if they are substantially different from what was anticipated. The complexity of the estimation process and issues related to the assumptions, risks and uncertainties inherent with the application of the percentage of completion method affect the amounts reported in our financial statements.

Shipping revenues and expenses are recorded in revenue and cost of goods sold, respectively.

Cost of Sales

Cost of sales are generally recognized when products are shipped or services are delivered. In the case of waterjet systems, cost of sales for delivered systems are generally recognized in the period when the revenue for the waterjet system sale is recognized. Cost of sales includes direct and indirect costs associated with the manufacture, installation and service of the Company's systems and consumable parts sales, including estimated future warranty obligations. Direct costs include material and labor, while indirect costs include, but are not limited to, depreciation, inbound freight charges, purchasing and receiving costs, inspection costs, warehousing costs, internal transfer costs and other costs of the Company's distribution network.

Allowance for Doubtful Accounts

The allowance for doubtful accounts is the Company's best estimate of the amount of probable credit losses on existing receivables. The Company estimates the allowance based on the age of the related receivables, knowledge of the financial condition of its customers, review of historical receivables and reserve trends and other relevant information. Account balances are charged against the allowance when the Company determines that it is probable the receivable will not be recovered.

Inventories

Inventories are stated at the lower of cost or market. Costs included in inventories consist of materials, labor and manufacturing overhead, which are related to the purchase or production of inventories. The Company uses the first-in, first-out method to determine its cost of inventories.

The Company writes-down obsolete or excess parts and equipment inventory that is no longer used due to design changes to its products or lack of customer demand. The Company regularly monitors its inventory levels and, if it identifies an excess condition based on its usage, the Company records a corresponding inventory reserve which establishes a new cost basis for its inventory. Subsequent changes in facts or circumstances do not result in the reversal of previously recorded markdowns or an increase in that newly established cost basis. The amount of inventory write-down requires the use of management judgment regarding technological obsolescence and forecasted customer demand.

Warranty Liability

Products are warranted to be free from material defects for a period of at least one year from the date of installation. Warranty obligations are limited to the repair or replacement of products. Warranty liability is recorded at time of the sale. The Company's warranty accrual is reviewed quarterly by management for adequacy based upon recent shipments and historical warranty experience. Credit is issued upon receipt of the returned goods, or, if material, at the time of notification and approval.

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Research and Engineering

The majority of research and engineering expenses are related to research and development efforts undertaken by the Company which are expensed as incurred. Research and engineering expenses were $11.4 million, $10.9 million and $10.1 million for the respective fiscal years ended April 30, 2013, 2012 and 2011. Research and engineering costs of $11.4 million for the fiscal year ended April 30, 2013 are net of a $0.8 million benefit from the reimbursement of certain research and engineering costs.

Stock-Based Compensation

Compensation cost for stock options or restricted stock units is measured at fair value on the dates they are granted or modified and recognized on a straight-line basis over the requisite service period, and adjusted for forfeitures expected to occur over the vesting period of the award. The fair value of restricted stock units is determined based on the number of shares granted and the quoted price of the Company's common stock. The Company estimates the grant-date fair value of stock options using the Black-Scholes option valuation model. Refer to Note 9 -Shareholders' Equity for further information related to the Company's stock compensation plans.

Health Benefits

The Company is self-insured for a portion of the cost of employee group health insurance, medical, dental, and vision in the United States. The Company maintains excess loss insurance that covers health care costs in excess of $125,000 per person per year.

Each reporting period, the Company records the costs of its health insurance plan including paid claims, the change in the estimate of incurred but not reported (“IBNR”) claims, taxes, and administrative fees (collectively the “Plan Cost”). The Company regularly reviews its estimates of reported and unreported claims and provides for these losses through insurance reserves. These reserves are influenced by rising costs of health care and other costs, increases in claims, time lag in claim information, and levels of excess loss insurance coverage carried. As claims develop and additional information becomes available to us, adjustments to the related loss reserves may occur.

The Company's annual Plan Costs were approximately $4.2 million, $3.6 million, and $3.5 million for the respective fiscal years ended April 30, 2013, 2012 and 2011. The liability, including IBNR, recorded in Accrued Payroll and Related Liabilities, was $0.4 million and $0.3 million as of April 30, 2013 and 2012, respectively.

Income Taxes

The Company accounts for income taxes under the asset and liability method, which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been included in the consolidated financial statements. Under this method, deferred tax assets and liabilities are determined based on the differences between the financial statements and tax basis of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to reverse. The effect of a change in tax rates on deferred tax assets and liabilities is recognized in income in the period that includes the enactment date.

The Company records net deferred tax assets to the extent it believes these assets will more likely than not be realized. In making such determination, the Company considers all available positive and negative evidence, including scheduled reversals of deferred tax liabilities, projected future taxable income, tax planning strategies and recent financial operations. In the event the Company was to determine that it would not be able to realize its deferred income tax assets in the future in excess of its net recorded amount, the Company would make an adjustment to the valuation allowance which would increase the provision for income taxes.

The Company's income tax returns are periodically audited by U.S. federal, state and local and foreign tax authorities. These audits include questions regarding our tax filing positions, including the timing and amount of deductions and the allocation of income among various tax jurisdictions. At any one time, multiple tax years are subject to audit by the various tax authorities. In evaluating the tax benefits associated with the Company's various tax filing positions, the Company records a tax benefit for uncertain tax positions using the highest cumulative tax benefit that is more likely than not to be realized. A number of years may elapse before a particular matter, for which a liability has been established, is audited and effectively settled. The Company adjusts its liability for unrecognized tax benefits in the period in which it determines the issue is effectively settled

46

with the tax authorities, the statute of limitations expires for the relevant taxing authority to examine the tax position or when more information becomes available.

The Company recognizes interest and penalties related to unrecognized tax benefits within the interest expense line in the accompanying Consolidated Statement of Operations. Accrued interest and penalties are included within the Other Long-Term Liabilities line in the consolidated balance sheets as the amounts are not material for any of the balance sheet periods presented.

Concentration of Credit Risk

In countries or industries where the Company is exposed to significant credit risk, sufficient collateral, including cash deposits and/or letters of credit, is required prior to the completion of a transaction.

The Company may make use of foreign exchange contracts to cover material transactions denominated in other than the functional currency of the relevant business unit. Credit risks are mitigated by the diversity of customers in the Company's customer base across many different geographic regions and performing creditworthiness analyses on such customers.

No single customer or group of customers under common control accounted for 10% or more of consolidated sales during the respective fiscal years ended April 30, 2013, 2012 and 2011.

Policies related to Capital Investments

Valuation of Cost Method Investment

The Company evaluates its cost method investment for impairment on a quarterly basis. An impairment charge would be recorded whenever a decline in value of an investment below its carrying amount is determined to be other-than-temporary. In determining if a decline is other-than-temporary, factors such as the length of time and extent to which the fair value of the investment has been less than the carrying amount of the investment, the near-term and longer-term operating and financial prospects of the affiliate, and the intent and ability to hold the investment for a period of time sufficient to allow for any anticipated recovery are considered.

Intangible Assets

Intangible assets consist of acquired and internally developed patents and trademarks. Trademarks have an indefinite life and are not amortized. The Company capitalizes application fees, license fees, legal and other costs of successfully defending a patent from infringement. The remaining costs are expensed as incurred. Patents are amortized on a straight-line basis over the legal life of the underlying patents. The weighted average amortization period for patents is 20 years.

Impairment of Long-Lived Assets

The Company routinely considers whether indicators of impairment are present for its long-lived assets, which consist of property and equipment, particularly its manufacturing equipment, and patents subject to amortization and depreciation. Factors considered include, but are not limited to, significant under-performance relative to historical or projected operating results; significant changes in the manner of use of long-lived assets or the strategy for the overall business; and significant negative industry or economic trends. If such indicators are present, the Company determines whether the sum of the estimated undiscounted cash flows attributable to the asset group in question is less than their carrying value. For purposes of impairment testing, long-lived assets are grouped at the component level, which for the Company is by regional locations, as this is the lowest level for which identifiable cash flows are largely independent of the cash flows of other assets and liabilities. If the sum of the undiscounted cash flows attributable to the asset group is less than the carrying value of the asset group, an impairment loss is recognized based on the excess of the carrying value of the asset group over its respective fair value. Fair value is determined by discounting estimated future cash flows, appraisals or other methods deemed appropriate. If the asset group determined to be impaired is to be held and used, the Company recognizes an impairment charge to the extent the present value of anticipated net cash flows attributable to the asset group is less than the assets' carrying value. The fair value of the assets then becomes the assets' new carrying value, which is amortized or depreciated over the remaining estimated useful life of the assets.

The Company concluded there were no long-lived asset impairment indicators in each of the fiscal years ended April 30, 2013, 2012 and 2011 following an analysis of operating results and consideration of other significant events or changes in the business environment. The Company will continue to monitor circumstances and events in future periods to determine whether asset impairment testing is warranted based on the existence of one or more of the above impairment indicators.

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Policies related to Financing

Financial Instruments

The carrying amount of cash and cash equivalents, restricted cash, receivables, accounts payable, accrued expenses, deferred revenue and customer deposits approximate fair value due to their relatively short maturities. Debt and notes payable reflect a market rate of interest, as such recorded amounts approximate fair value.

Cash and Cash Equivalents

The Company considers highly liquid short-term investments with original maturities from the date of purchase of three months or less, if any, to be cash equivalents. The Company's cash consists of demand deposits in large financial institutions. At times, balances may exceed federally insured limits. Cash balances which are not available for general corporate purposes are classified as restricted cash and are primarily related to cash which collateralizes commercial letters of credit.

Derivative Financial Instruments

The Company selectively utilizes forward exchange rate contracts to hedge its exposure to adverse exchange rate fluctuations on foreign currency denominated accounts receivable and accounts payable. These forward contracts have typically not been designated as hedges. At the end of each month, the Company marks the outstanding forward contracts to market and records an unrealized foreign exchange gain or loss for the mark-to-market valuation. The Company did not have any open forward exchange rate contracts for the respective fiscal years ended April 30, 2013 and 2012. The effect of derivative instruments on the Consolidated Statement of Operations is discussed further in Note 13 -Fair Value of Financial Instruments.

Note 2: Receivables, Net

Net Receivables consisted of the following:

	April 30,
	2013			2012
Trade Accounts Receivable	$	31,893		$	36,802
Unbilled Revenues	11,754			11,152
	43,647			47,954
Less: Allowance for Doubtful Accounts	(906		)	(1,124		)
Receivables, net	$	42,741		$	46,830

The Company's unbilled revenues do not contain any amounts which are expected to be collected after one year.

Note 3: Inventories

Inventories consisted of the following:

	April 30,
	2013		2012
Raw Materials and Parts	$	25,409	$	26,247
Work in Process	3,365		3,313
Finished Goods	12,285		10,509
Inventories	$	41,059	$	40,069

Note 4: Property and Equipment

Property and equipment are stated at cost. Additions, leasehold improvements and major replacements are capitalized. When assets are sold, retired or otherwise disposed of, the cost and accumulated depreciation are removed from the accounts and any resulting gain or loss is reflected in the statement of operations within operating income. Depreciation for financial reporting purposes is provided using the straight-line method over the estimated useful lives of the assets. Leasehold

48

improvements are amortized over the shorter of the related lease term, or the useful life of the asset. Expenditures for maintenance and repairs are charged to expense as incurred.

The carrying value of the Company's Property and Equipment and estimated service lives were as follows:

		April 30,
	Range of Lives	2013			2012
Land	N/A	$	460		$	460
Buildings and Leasehold Improvements	10-30	5,471			5,189
Machinery and Equipment	3-10	28,381			25,773
Furniture and Fixtures	3-10	2,058			2,518
Computer Equipment and Software	3-5	14,930			12,079
Construction in Progress		1,557			2,721
		52,857			48,740
Less: Accumulated Depreciation and Amortization		(34,963		)	(31,252		)
Property and Equipment, net		$	17,894		$	17,488

Depreciation expense was $5.4 million, $5.7 million, and $5.9 million for the respective fiscal years ended April 30, 2013, 2012 and 2011. Depreciation is calculated on the straight-line method over the estimated useful lives of the assets.

Note 5: Intangible Assets

The components of the Company's finite lived intangible assets consisted of the following:

	April 30,
	2013			2012
Patents	$	7,110		$	6,531
Less: Accumulated Amortization	(3,189		)	(2,729		)
Patents, net	$	3,921		$	3,802

Amortization expense for intangible assets with finite lives for the respective fiscal years ended April 30, 2013, 2012 and 2011 amounted to $0.6 million, $0.5 million, and $0.4 million. The estimated annual amortization expense is $0.6 million for each fiscal year through April 30, 2018.

Intangible assets with indefinite lives consisted of the following:

	April 30,
	2013		2012
Trademarks	$	1,199	$	1,134

Note 6: Debt

Subordinated Notes

The Company issued subordinated notes in fiscal year 2010 with a principal value of $10.0 million and a 2% annual interest rate. The notes were originally recorded at a discount as the stated interest rate was below the Company's incremental borrowing rate, and the discount is being amortized to interest expense through maturity of the notes. The principal balance and accrued interest on the notes will aggregate to $10.8 million when due in August 2013. As of April 30, 2013, the Company's subordinated notes and related interest of $10.6 million are classified as current.

Credit Facility

The Company has a $25.0 million Credit Facility that matures March 2, 2014. Under the terms of the Credit Facility in effect as of April 30, 2013, the Company was allowed to maintain a maximum consolidated leverage ratio of 2.75x, and a minimum fixed charge coverage ratio of 1.75x. The terms of the Credit Facility define the leverage ratio as the ratio of

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consolidated indebtedness, excluding its outstanding subordinated notes, to consolidated adjusted Earnings Before Interest, Taxes, Depreciation and Amortization ("Adjusted EBITDA") for the most recent four fiscal quarters. The Fixed Charge Coverage Ratio is defined as the ratio of Adjusted EBITDA, less income taxes and maintenance capital expenditures, during the most recent four fiscal quarters to the sum of interest changes during the most recent four quarters and scheduled debt repayments in the next four quarters.

The financial covenants are measured on a quarterly basis. The Company's leverage ratio and fixed charge coverage ratio were 0.90 and 12.6, respectively as of the fiscal quarter ended April 30, 2013. The Company's calculations of these financial ratios are reported in Exhibit No. 99.1 of this Annual Report on Form 10-K. A violation of any of the Credit Facility covenants would result in an event of default and accelerate the repayment of all unpaid principal and interest and the termination of any letters of credit. All of the Company's domestic assets and certain interests in some foreign subsidiaries are pledged as collateral under the three-year Credit Facility Agreement. In addition, the terms of the Credit Facility limit the Company's ability to pay dividends. The Company is required to report its annual financial statements and debt covenant compliance to its lender within 90 days after the end of its fiscal year end. The Company obtained a waiver from its lender which extended its covenant compliance reporting requirement from within 90 days after its fiscal year end to within 120 days. The Company was in compliance with all of its financial covenants as of the end of each quarter during the fiscal year ended April 30, 2013.

Interest on the Credit Facility is based on the bank’s prime rate or LIBOR rate plus a percentage spread between 0.00% and 2.25% depending on whether it uses the bank’s prime rate or LIBOR rate and based on the Company’s current leverage ratio. The Company also pays an annual letter of credit fee ranging from 1.25% to 2.25% of the amount available to be drawn under each outstanding stand-by letter of credit. The annual letter of credit fee is payable quarterly in arrears and varies depending on the Company's leverage ratio.

As of April 30, 2013, the Company had $16.6 million available under its Credit Facility, net of $8.4 million in outstanding letters of credit. There were no outstanding borrowings against the Credit Facility as of April 30, 2013. Subsequent to April 30, 2013, the Company amended its existing Credit Facility and entered into a new four-year borrowing agreement, effective May 31, 2013. Refer to Note 16 of the Consolidated Financial Statements for further discussion on the amended agreement.

Revolving Credit Facility in Taiwan

There were no outstanding balances under the Company’s unsecured Taiwan credit facilities as of April 30, 2013 and 2012. The unsecured commitment for the Taiwan credit facilities totaled $1.4 million at April 30, 2013, bearing interest at 2.6% per annum.

Note 7: Commitments and Contingencies

Lease Commitments

The Company rents certain facilities and equipment treated as operating leases for financial reporting purposes. The majority of leases currently in effect are renewable for periods of two to five years. Rent expense under these leases was approximately $3.1 million, $3.1 million and $3.2 million for the respective fiscal years ended April 30, 2013, 2012 and 2011.

Future minimum rents payable under operating leases for the fiscal years ending April 30 are as follows:

2014	$	3,132
2015	2,817
2016	2,527
2017	1,625
2018	1,547
2019 and thereafter	2,588
	$	14,236

Warranty Obligations

The Company’s estimated obligations for warranty, which are included as part of Costs of Sales in the Consolidated Statements of Operations, are accrued concurrently with the revenue recognized. The Company makes provisions for its warranty obligations based upon historical costs incurred for such obligations adjusted, as necessary, for current conditions and

50

factors. Due to the significant uncertainties and judgments involved in estimating the Company’s warranty obligations, including rates of warranty claims, changing product designs and specifications, and new product releases, the ultimate amount incurred for warranty costs could change in the near term from the current estimate. The Company believes that its warranty accrual as of April 30, 2013, which is included in the Other Accrued Liabilities line item in the Consolidated Balance Sheets, is sufficient to cover expected warranty costs.

The following table presents the activity for the Company’s warranty obligations:

	April 30,
	2013			2012			2011
Beginning Balance	$	3,013		$	2,804		$	2,533
Increase in warranty liability on fiscal year sales	5,880			4,235			2,695
Reduction in warranty liability for claims in fiscal year	(5,169		)	(4,026		)	(2,424		)
Ending Balance	$	3,724		$	3,013		$	2,804

Product Liability

Currently there are outstanding product liability claims arising out of the sale of current and former products of the Company. To minimize the financial impact of product liability claims, the Company purchases product liability insurance in amounts and under terms considered acceptable to management.

Management periodically evaluates the merit of all claims, including product liability claims, as well as considering unasserted claims. Recoveries, if any, may be realized from indemnitors, codefendants, insurers or insurance guaranty funds. Management believes its insurance coverage is adequate to satisfy any liabilities that are incurred.

Legal Proceedings

At any time, the Company may be involved in legal proceedings arising in the normal course of conducting business. The Company's policy is to routinely assess the likelihood of any adverse judgments or outcomes related to legal matters, as well as ranges of probable losses. A determination of the amount of the reserves required, if any, for these contingencies is based on historical experience and an analysis of each known issue. The Company records reserves related to legal matters for which it is probable that a loss has been incurred and the range of such loss can be estimated. With respect to other matters, management has concluded that a loss is only reasonably possible or remote, or a range of loss cannot be estimated, and, therefore, no liability is recorded. Management discloses the facts regarding material matters assessed as reasonably possible, and the exposure if determinable. Costs incurred defending claims are expensed as incurred. Other than those described below, the Company does not believe that the resolution of any such matters will have a material adverse effect on its consolidated financial position, results of operations or cash flows.

In litigation arising out of a June 2002 incident at a Crucible Metals (“Crucible”) facility, the Company's excess insurance carrier is contesting its obligation to provide coverage for property damage. The suits over insurance coverage, Flow Autoclave Systems, Inc., Flow Pressure Systems, ABB Pressure Systems, Avure Technologies AB and Avure Technologies, Inc. v. Lumbermens Mutual Casualty and Kemper Insurance Co., and Lumbermens Mutual Casualty Company v. Flow International Corporation, Flow Autoclave Systems, Inc., Flow Pressure Systems, ABB Pressure Systems, Avure Technologies AB and Avure Technologies, Inc., were originally filed in Supreme Court of the State of New York, County of Onondaga, Index No. 2005-2126 in 2005, and sought a declaratory judgment of the rights of the parties under the insurance policy issued by the carrier. The carrier, Lumbermens Mutual Casualty Company, has settled the claims relating to this incident for a total of approximately $3.4 million and is now seeking a declaratory judgment that it was not obligated to pay the claim. The suit, Lumbermens Mutual Casualty Company v. Flow International Corporation et al, was filed in United States District Court for the Northern District of New York on August 13, 2008, case number 08-CV-865. The trial was postponed several times. The judge has ruled on evidentiary matters and has set trial to start on August 19, 2013. The Company is vigorously contesting the carrier's claim; however, the ultimate outcome or likelihood of this specific claim cannot be determined at this time and an unfavorable outcome ranging from $0 to $3.4 million is reasonably possible. The result of any outcome would be reported as discontinued operations in the Company's Consolidated Statements of Operations.

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Other Claims or Assessments

In fiscal year 2009, the Company was notified by the purchaser of its Avure business (reported as a discontinued operation for the fiscal year ended April 30, 2006), that the Swedish Tax Authority was conducting an audit which included periods when the Company had owned the business. In the sale agreements, the Company made commitments to indemnify the purchaser for certain claims, including tax matters relating to the periods when it owned the business. The Swedish tax authority concluded its audit and issued a final report in November 2009 initially asserting that Avure owes 19.5 million Swedish Krona, approximately $2.8 million at the initial date of assessment, in additional taxes, penalties and fines. In April 2010, the Company, on behalf of Avure, filed an appeal to contest the Swedish tax authority's assertion. In August 2012, the Company received notice that the Swedish district court issued a ruling in favor of the Swedish tax authority. The Company continues to contest the findings and filed an appeal with the Administrative Court of Stockholm in September 2012. A charge was recorded in the first quarter of fiscal year 2010 related to the periods when the Company owned Avure. This charge was accounted for as an adjustment to the loss on the disposal of the Avure business and was reported as a charge to discontinued operations in the Company's Consolidated Statements of Operations. As of April 30, 2013, the Company has accrued $1.3 million related to the Avure matter. The balance of the accrued liability will fluctuate period over period with changes in foreign currency rates until such time as the matter is ultimately resolved.

Note 8: Pension and Other Post Retirement Benefits

The Company has a 401(k) savings plan in which employees may contribute a percentage of their compensation. At its discretion, the Company may make contributions based on employee contributions and length of employee service. Company contributions and expense under the plan for the respective fiscal years ended April 30, 2013, 2012 and 2011 were $0.9 million, $0.8 million and $0.4 million.

The Company sponsors a defined benefit pension plan in Taiwan, which is governed by a local regulation: The Labor Standard Law (1986). As required by the Labor Standard Law, the Company must remit monthly 4% of the employee's base salary into a designated investment account for the Pension Plan. The pension benefit an employee is entitled to ranges from 2 months to 45 months' salary, based upon years of service. An employee is eligible to withdraw their pension benefit upon 25 years of service, age 55 with 15 years of service, or age 60, if the employee is still employed by the Company upon retirement. If an employee terminates prior to retirement, the employee forfeits all accrued benefits under the Plan. Due to a change in Taiwanese law, all new employees hired after July 2005, are not subject to this plan, thus, the plan is frozen. The Company uses an April 30 measurement date for its plan.

All plan assets are deposited in an interest earning account. The amount of net periodic cost recognized for the respective fiscal years ended April 30, 2013, 2012 and 2011 was less than $0.1 million. The accumulated benefit obligation as of April 30, 2013 and 2012 was $1.1 million and $1.0 million, respectively. The unrecognized net transition obligation as of April 30, 2013 and 2012 was less than $0.1 million and the unrecognized loss was $0.1 million as of April 30, 2013 and 2012. The Company does not anticipate any projected benefit payments under this plan over the next year.

The following table provides a reconciliation of the changes in the plan's benefit obligations and fair value of plan assets for the fiscal years ended April 30, 2013 and 2012:

	Fiscal Year Ended April 30,
	2013			2012
Changes in the Projected Benefit Obligation
Projected Benefit Obligation - Beginning Balance	$	1,361		$	1,327
Service Cost	15			18
Interest Cost	25			26
Actuarial Loss	54			8
Benefits Paid	—			—
Foreign Exchange Adjustment	(10		)	(18		)
Projected Benefit Obligation - Ending Balance	$	1,445		$	1,361

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	Fiscal Year Ended April 30,
	2013			2012
Changes in the Value of Plan Assets
Fair Value of Plan Assets - Beginning Balance	$	1,013		$	992
Actual Return on Plan Assets	13			9
Employer Contribution	27			26
Benefits Paid	—			—
Foreign Exchange Adjustment	(8		)	(14		)
Fair Value of Plan Assets - Ending Balance	$	1,045		$	1,013

Actuarial assumptions used to determine benefit obligations were as follows:

	Fiscal Year Ended April 30,
	2013		2012
Discount Rate	1.75	%	1.90	%
Expected Rate of Return on Assets	1.75	%	1.90	%
Salary Increase Rate	3.00	%	3.00	%

Note 9: Shareholders' Equity

Capital Stock

As of April 30, 2013 and 2012, 84 million shares of common stock, par value $0.01, and 1 million shares of preferred stock, par value $0.01, were authorized for issuance. There were 48,452,000 and 47,891,000 shares of common stock outstanding as of April 30, 2013 and 2012, respectively. There were no shares of preferred stock outstanding as of April 30, 2013 or 2012.

Common Share Rights Purchase Plan

The Company maintains a Rights Agreement which provides a dividend of one common share purchase right ("Right") for each outstanding share of common stock, $0.01 par value per share of the Company. Each Right entitles the registered holder to purchase from the Company one share of Common Stock at a price per share of $18.00. The Rights are not exercisable until after the date of commencement of, or the first public announcement of an intention to commence, a tender offer or exchange offer the consummation of which would result in the beneficial ownership by a person (other than an Exempted Entity) or group of 15% or more of the shares of Common Stock then outstanding. The Rights will expire on September 1, 2019 unless the final expiration date is extended or unless the Rights are earlier redeemed or exchanged by the Company.

Stock-Based Compensation

The Company maintains a stock-based compensation plan (the “2005 Plan”) to attract and retain talented employees and promote the growth and success of the business by aligning long-term interests of employees with those of shareholders. There are 5 million shares authorized for issuance under the 2005 Plan in the form of stock, stock units, stock options, stock appreciation rights, or cash awards. As of April 30, 2013, the Company had approximately 0.3 million shares of common stock available for future issuance under its 2005 Plan.

Stock Options

The Company grants stock options to employees of the Company with service and/or performance conditions. The compensation cost of stock options expected to vest is based on their fair value at the grant date, net of expected forfeitures, and recognized ratably over the vesting period. The Company uses the Black-Scholes option-pricing model to calculate grant-date fair value of its stock options, including its historical volatility in estimating expected volatility, and historical employee exercise activity and option expiration data to estimate the expected term assumption in its grant-date valuation. The risk-free interest rate assumption is based on U.S. Treasury constant maturity interest rate whose terms are consistent with the expected term of the Company's stock options. The Company has not declared or paid any cash dividends on its Common Stock and does not anticipate that any dividends will be paid in the foreseeable future based upon management intent, and dividend

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limitation terms of the Company's Credit Facility. All options become exercisable upon a change in control of the Company unless the surviving company assumes the outstanding options or substitutes similar awards for the outstanding awards of the 2005 Plan. The maximum term of options is 10 years from the date of grant. There were no options granted during the respective fiscal years ended April 30, 2013, 2012 and 2011.

The following table summarizes stock option activities for the fiscal year ended April 30, 2013:

	Number of Options		Weighted-Average Exercise Price		Aggregate Intrinsic Value		Weighted-Average Remaining Contractual Term (Years)
Outstanding at April 30, 2012	388,168		$	10.47	$	—	5.41
Granted	—		—
Exercised	—		—
Expired or forfeited	(13,140	)	$	5.71
Outstanding at April 30, 2013	375,028		$	10.64	—		4.59
Exercisable as of April 30, 2013	375,028		$	10.64	—		4.59
Vested and expected to vest as of April 30, 2013	375,028		$	10.64	—		4.59

	Fiscal Year Ended April 30,
	2013		2012		2011
Total intrinsic value of options exercised	$	—	$	—	$	—
Total fair value of options vested	—		345		345
Cash received from exercise of share options	—		—		—
Tax benefit realized from stock options exercised	—		—		—

For the fiscal year ended April 30, 2012 the Company recognized compensation expense related to stock options of $0.4 million. The Company did not recognize any compensation expense related to stock options for the fiscal year ended April 30, 2013.

Service-Based Stock Awards

The Company grants restricted stock units or common stock to employees and non-employee directors of the Company with service conditions. Each non-employee director is eligible to receive and is granted fully vested common stock worth $40,000 annually. The compensation cost of restricted stock units or fully vested common stock is based on their fair value at the grant date, net of expected forfeitures, and recognized ratably over the service period.

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The following table summarizes the service-based stock award activities for employees for the fiscal years ended April 30, 2013, 2012 and 2011:

	Number of Shares		Weighted- Average Grant-date Fair Value
Nonvested at April 30, 2010	1,237,959		$	3.57
Granted	838,666		2.29
Vested	(348,240	)	3.81
Forfeited	(93,607	)	2.86
Nonvested at April 30, 2011	1,634,778		2.90
Granted	846,508		3.44
Vested	(653,447	)	2.61
Forfeited	(48,574	)	3.26
Nonvested at April 30, 2012	1,779,265		3.25
Granted	811,461		2.93
Vested	(641,709	)	3.47
Forfeited	(220,013	)	3.18
Nonvested at April 30, 2013	1,729,004		$	3.03

For the respective fiscal years ended April 30, 2013, 2012 and 2011, the Company recognized compensation expense related to service-based stock awards of $2.5 million, $3.2 million and $1.8 million, and granted stock awards to employees of 0.8 million, 0.8 million and 0.8 million. As of April 30, 2013, total unrecognized compensation cost related to service-based stock awards of $3.5 million is expected to be recognized over a weighted average period of 2 years.

Note 10: Basic and Diluted Income per Share

Basic income per share is calculated by dividing income from continuing operations by the weighted average number of common shares outstanding during the period. Diluted income per share is calculated by dividing income from continuing operations by the weighted average number of common shares and potential common shares outstanding during the period. Potential dilutive common shares consist of the incremental common shares issuable upon the exercise of outstanding employee stock options and non-vested restricted stock units as determined under the treasury stock method, except where their inclusion would be antidilutive.

The following table sets forth the computation of basic and diluted income (loss) from continuing operations per share:

	Fiscal Year Ended April 30,
	2013		2012		2011
Income from Continuing Operations	5,172		$	9,389	$	1,008
Weighted average shares used in computing basic income per share	48,312		47,766		47,216
Dilutive potential common shares from employee stock options and restricted stock units	748		—		12
Weighted average shares used in computing diluted income per share	49,060		47,766		47,228
Basic and diluted income from continuing operations per share	$	0.11	$	0.20	$	0.02

There were 0.9 million, 2.2 million and 2.1 million potentially dilutive common shares from employee stock options and stock units which were excluded from the diluted weighted average per share calculation for the respective fiscal years ended April 30, 2013, 2012 and 2011 as their effect would be antidilutive.

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Note 11: Other Income (Expense), Net

The following table summarizes the detail of Other Income (Expense), net:

	Fiscal Year Ended April 30,
	2013			2012			2011
Realized Foreign Exchange Gains (Losses), net	$	(462	)	$	(249	)	$	177
Unrealized Foreign Exchange Gains (Losses), net	(448		)	(587		)	412
Other	(107		)	(118		)	97
Other Income (Expense), net	$	(1,017	)	$	(954	)	$	686

Note 12: Income Taxes

The components of the Company's consolidated income (loss) before income taxes consisted of the following:

	Fiscal Year Ended April 30,
	2013		2012		2011
Income (Loss) from Continuing Operations Before Provision (Benefit) for Income Taxes:
United States	$	7,085	$	1,762	$	(2,419	)
Foreign	3,216		10,903		6,322
Total	$	10,301	$	12,665	$	3,903

The provision (benefit) for income taxes is comprised of:

	Fiscal Year Ended April 30,
	2013			2012			2011
Federal	$	(298	)	$	(189	)	$	(993	)
State	82			112			30
Foreign	2,260			2,049			2,102
Current Tax Expense (Benefit) (after NOL Benefit of $3,307, $2,040, and $1,228)	2,044			1,972			1,139
Federal	2,674			1,652			549
State	244			(49		)	252
Foreign	167			(299		)	955
Deferred Tax Expense (Benefit) (Net of Change in Valuation Allowance of $(268), $(1,830), and $(351))	3,085			1,304			1,756
Provision (Benefit) for Income Taxes	$	5,129		$	3,276		$	2,895

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The reconciliation between the Company's effective tax rate on income from continuing operations and the statutory tax rate is as follows:

	Fiscal Year Ended April 30,
	2013		2012		2011
Income tax provision (benefit) at federal statutory rate	34.0	%	34.0	%	34.0	%
State and local taxes net of federal tax benefit	2.1		0.3		4.7
Foreign tax rate differential	(0.8	)	(2.9	)	(0.3	)
Change in valuation allowance	(1.7	)	(3.9	)	5.1
Non deductible/nontaxable items	8.1		7.2		17.4
Foreign earnings not previously subject to U. S. tax	(0.4	)	2.2		—
Foreign withholding taxes	2.2		1.0		1.4
Stock based compensation	0.9		0.8		4.5
Tax credits	—		—		(0.8	)
Prior year reconciled amounts	6.0		(3.2	)	7.0
Examination settlements	—		(10.8	)	—
Other, net	(0.6	)	1.2		1.2
Income tax provision	49.8	%	25.9	%	74.2	%

Components of the net deferred tax assets (liabilities) consisted of the following:\

	April 30, 2013			April 30, 2012
Current deferred tax assets (liabilities):
Deposits on future sales	$	(980	)	$	(1,445	)
Net operating loss carryforwards	1,559			765
Stock-based compensation	655			758
Accrued Settlement	3,332			—
Other current assets	3,324			4,385
Other current liabilities	(160		)	(1,083		)
Current Deferred Tax Assets	7,730			3,380
Valuation allowance	(326		)	(78		)
Total Current Deferred Tax Assets	$	7,404		$	3,302

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	April 30, 2013			April 30, 2012
Long-term deferred tax assets (liabilities):
Net operating loss carryforwards	$	16,528		$	21,373
Accrued settlement	—			3,049
Capital loss carryforwards	469			456
Goodwill	850			969
Fixed assets	(24		)	336
Stock-based compensation	1,396			1,097
Intercompany accounts receivable allowances	204			205
Unrealized foreign exchange loss	(2,233		)	(2,350		)
Intercompany loan	(842		)	—
Foreign withholding tax	(614		)	—
Other long-term assets	2,907			1,748
Other long-term liabilities	(1,121		)	(1,532		)
Long-term deferred tax assets	17,520			25,351
Valuation allowance	(7,309		)	(7,824		)
Long-term deferred tax assets, net	10,211			17,527
Net Deferred Tax Assets	$	17,615		$	20,829

As of April 30, 2013, the Company had approximately $43.2 million of domestic net operating loss and $33.0 million of state net operating loss carryforwards to offset future taxable income for federal and state income tax purposes. These net operating loss carryforwards expire between fiscal year 2023 and fiscal year 2031. Net operating loss carryforwards in foreign jurisdictions amount to $38.4 million. A valuation allowance of $23.8 million has been provided against these net operating loss carryforwards in certain of the Company's foreign jurisdictions as realization of the tax benefit in those jurisdictions is uncertain. Most of the foreign net operating losses can be carried forward indefinitely, with certain amounts expiring in 2016. The federal, state and foreign net operating loss carryforwards pursuant to the income tax returns filed include uncertain tax positions taken in prior years. The net operating loss carryforwards pursuant to the income tax returns are larger than the net operating loss carryforwards considered more likely than not to be realized in recognizing deferred tax assets for financial statement purposes. The Company also has a capital loss carryover of $1.3 million, for which it has provided a valuation allowance that expires after fiscal year 2017. Utilization of net operating losses may be subject to limitation due to ownership changes and other limitations provided by the Internal Revenue Code and similar state and foreign provisions. If such a limitation applies, the net operating loss may expire before full utilization.

U.S. income and foreign withholding taxes have not been provided on approximately $15.7 million of cumulative undistributed earnings of foreign subsidiaries. We intend to reinvest these earnings for the foreseeable future. If these amounts were distributed to the U.S., in the form of dividends or otherwise, we would be subject to additional U.S. income taxes.

The Company repatriated $1.9 million from one foreign subsidiary in fiscal year 2011 deemed to be a dividend for tax purposes.

The Company is subject to taxation in the United States, various state and foreign jurisdictions. The Company is no longer subject to examinations by tax authorities for years prior to fiscal year 2003.

The table of deferred tax assets and liabilities shown above does not include certain deferred tax assets at April 30, 2013 and 2012 that arose directly from tax deductions related to equity compensation in excess of compensation recognized for financial reporting. Equity will be increased by $1.6 million if and when such deferred tax assets are ultimately realized. The Company uses ASC 740 ordering for purposes of determining when excess tax benefits have been realized.

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The following is a tabular reconciliation of the total amounts of the Company's unrecognized tax benefits for the years ended April 30, 2013, 2012 and 2011:

Balance as of April 30, 2010	$	9,247
Gross increases - tax positions in current period	102
Gross increases - tax positions in prior periods	360
Gross increases in tax positions due to currency fluctuations	87
Balance as of April 30, 2011	9,796
Gross increases - tax positions in current period	114
Gross increases - tax positions in prior periods	33
Gross decreases in tax positions due to currency fluctuations	(47		)
Gross decreases - tax positions in prior periods	(3,130		)
Balance as of April 30, 2012	6,766
Gross increases - tax positions in current period	140
Gross increases - tax positions in prior periods	415
Gross decreases in tax positions due to currency fluctuations	(9		)
Gross decreases - tax positions in prior periods	(54		)
Balance as of April 30, 2013	$	7,258

The balance of unrecognized tax benefits as of April 30, 2013 was $7.3 million of tax benefits that, if recognized, would affect the effective tax rate and would result in adjustments to other tax accounts, primarily deferred taxes. The Company estimates a reduction in its unrecognized tax benefits of approximately $0.4 million to occur within the next twelve monhts.

Note 13: Fair Value of Financial Instruments

The Company discloses and classifies fair value measurements in one of the following three categories:

Level 1:  Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities;

Level 2:  Quoted prices in markets that are not active or inputs which are observable, either directly or indirectly, for substantially the full term of the asset or liability;

Level 3:  Prices or valuation techniques that require inputs that are both significant to the fair value measurement and unobservable (i.e., supported by little or no market activity).

Assets and Liabilities Measured at Fair Value on a Recurring Basis

The Company selectively utilizes forward exchange rate contracts to hedge its exposure to adverse exchange rate fluctuations on foreign currency denominated accounts receivable and accounts payable. The Company records derivatives at fair value. Historically, such derivatives have consisted primarily of foreign currency forward contracts which have not been designated as hedging instruments for accounting purposes. The Company has therefore marked such forward contracts to market with an unrealized gain or loss for the mark-to-market valuation. Such forward contracts are classified as Level 2 because such measurements are determined using published market prices or estimated based on observable inputs such as future exchange rates. There were no open forward exchange contracts as of April 30, 2013 or 2012. Accordingly, the Company had no financial assets and liabilities that qualified for fair value measurement and disclosure.

Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis

Nonfinancial nonrecurring assets and liabilities included on the Company's Consolidated Balance Sheets consist of long-lived assets, including cost-method investments and long-term subordinated notes issued to OMAX, that are measured at fair value and tested and measured for impairment, when necessary. 

Cost Method Investment

In fiscal year 2009, the Company entered into an equity purchase agreement in which it acquired a minority interest in Dardi International (“Dardi”), a waterjet manufacturer based in China. As of April 30, 2013, the carrying value of the

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Company's investment in Dardi was $3.7 million. The fair value of the Company's investment in Dardi was not estimated as there were no events or changes in circumstances that may have a significant adverse effect on the fair value of the investment, and the Company's management determined that it was not practicable to estimate the fair value of the investment. Further, there are no quoted market prices for the Company's investment, and sufficient information is not readily available for the Company to utilize a valuation model to determine its fair value without incurring excessive costs relative to the materiality of the investment. The Company's cost method investment is evaluated, on at least a quarterly basis for potential other-than-temporary impairment, or when an event or change in circumstances has occurred, that may have a significant adverse effect on the fair value of the investment. 

Impairment indicators the Company considers in each reporting period include the following: whether there has been a significant deterioration in earnings performance, asset quality or business prospects; a significant adverse change in the regulatory, economic, or technological environment; a significant adverse change in the general market condition or geographic area in which the investment operates; industry and sector performance; current equity and credit market conditions; any bona fide offers to purchase the investment for less than the carrying value; and factors that raise significant concern, such as negative cash flow from operations or working capital deficiencies. Since there is no active trading market for this investment, it is for the most part illiquid. Future changes in market conditions, the future performance of the investment, or new information provided by Dardi's management could affect the recorded value of the investment and the amount realized upon liquidation. Due to the significant unobservable inputs, the fair value measurements used to evaluate impairment are Level 3 inputs.There were no impairments identified for the year ended April 30, 2013.

Subordinated Notes

In fiscal year 2010, the Company had an initial fair value measurement of long-term subordinated notes issued to OMAX. These notes were issued to OMAX during the second quarter of fiscal year 2010. These subordinated notes do not trade in an active market and, therefore observable price quotations are not available. In the absence of observable price quotations, the fair value was determined based on a discounted cash flow model which incorporated the effects of the Company's own credit risk in the fair value of the liability. The cash flow assumptions were based on the Company's contractual cash flows and the anticipation that the Company will pay the debt according to its contractual terms and were considered Level 3 inputs. Specifically, in calculating the fair value of these notes, the Company used a four-year maturity date of August 17, 2013 and a discount rate of 10% which was the rate at which management believed the Company could obtain financing of a similar nature from other sources. Since there have been no material changes in the Company's financial condition and no material modifications to the subordinated notes, the estimated fair value of these notes approximates carrying value as of April 30, 2013. The carrying amount of these notes as of April 30, 2013 was $10.6 million. The principal balance and accrued interest on the notes will aggregate to $10.8 million when due in August 2013.

The carrying values of the Company's current assets and liabilities due within one-year approximate fair values due to the short-term nature of these instruments.

Note 14: Business Segments and Geographic Information

The Company reports its operating results to its Chief Executive Officer, who is the chief operating decision maker, based on market segments which is consistent with management’s long-term growth strategy. The Company has two reportable segments: Standard and Advanced. The Standard segment includes sales and cost of sales related to the Company’s cutting and surface preparation systems using ultrahigh-pressure water pumps, as well as parts and services to sustain these installed systems. Systems included in this segment do not require significant custom configuration. The Advanced segment includes sales and cost of sales related to the Company’s complex aerospace and automation systems which require specific custom configuration and advanced features, including robotics, to match unique customer applications.

Segment results are measured based on revenue growth and gross margin. All other expenses and earnings are aggregated and reported on a consolidated basis. It is not practicable to segregate total assets by segment due to reporting system limitations. Total assets for the respective fiscal years ended April 30, 2013 and 2012 were $162.1 million and $167.1 million.

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The following table sets forth the revenue and gross margin of operations by reportable segment:

	Fiscal Year Ended April 30,
	2013			2012			2011
Standard Segment:
Sales	$	239,413		$	230,272		$	187,887
Gross Margin	94,052			93,843			78,321
	39		%	41		%	42		%
Advanced Segment:
Sales	19,925			23,496			28,637
Gross Margin	3,870			5,525			6,140
	19		%	24		%	21		%
Total:
Sales	259,338			253,768			216,524
Gross Margin	97,922			99,368			84,461
	38		%	39		%	39		%

The table below represents the Company's sales by category:

	Fiscal Year Ended April 30,
	2013		2012		2011
Standard System Sales	$	153,202	$	150,456	$	117,721
Advanced System Sales	19,925		23,358		28,431
Consumable Parts Sales	86,211		79,954		70,372
	$	259,338	$	253,768	$	216,524

The table below presents the Company's sales to unaffiliated customers and long-lived assets by geographical region:

	Fiscal Year Ended April 30,
Sales by Geographic Region	2013		2012		2011
United States (i)	$	139,829	$	130,342	$	118,882
Europe, Middle East, Africa	50,704		51,429		42,929
Asia Pacific	40,344		41,119		32,011
Latin America	26,061		28,365		20,373
Other Foreign	2,400		2,513		2,329
Total	$	259,338	$	253,768	$	216,524
			April 30,
Long-Lived Assets			2013		2012
United States			$	37,828	$	43,194
Europe, Middle East, Africa			5,572		5,858
Asia Pacific			1,470		1,562
Latin America			764		907
Other Foreign			—		—
Total			$	45,634	$	51,521

i. U.S. sales to unaffiliated customers in foreign countries were $30.7 million, $27.2 million, and $25.5 million in fiscal years 2013, 2012, and 2011, respectively.

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The Company recognizes inter-area sales transferred between geographic regions at negotiated prices, but the impact of these inter-area sales have been eliminated in the consolidation.

Note 15: Selected Quarterly Financial Information (unaudited)

Quarterly financial data provides a review of the Company's results and performance throughout the year. The Company's earnings (loss) per share for the full year may not equal the sum of the four quarterly earnings per share amounts because of common share activity during the year. The operating results for any quarter are not necessarily indicative of results for any future period.

Summarized unaudited quarterly financial data was as follow:

	Fiscal Year Ended April 30, 2013
	First		Second		Third		Fourth			Total
Sales	$	66,235	$	67,038	$	67,658	$	58,407		$	259,338
Gross Margin	24,793		25,420		26,653		21,056			97,922
Income (Loss) From Continuing Operations	2,207		2,175		2,695		(1,905		)	5,172
Net Income (Loss)	2,221		2,110		2,611		(1,905		)	5,037
Basic Income (Loss) Per Share:
Income (Loss) From Continuing Operations	$	0.05	$	0.04	$	0.06	$	(0.04	)	$	0.11
Net Income (Loss)	$	0.05	$	0.04	$	0.05	$	(0.04	)	$	0.10
Diluted Income (Loss) Per Share:
Income (Loss) From Continuing Operations	$	0.05	$	0.04	$	0.05	$	(0.04	)	$	0.11
Net Income (Loss)	$	0.05	$	0.04	$	0.05	$	(0.04	)	$	0.10

	Fiscal Year Ended April 30, 2012
	First		Second		Third		Fourth		Total
Sales	$	60,030	$	64,533	$	65,808	$	63,397	$	253,768
Gross Margin	23,120		25,316		26,071		24,861		99,368
Income From Continuing Operations	654		2,731		3,259		2,745		9,389
Net Income	711		2,779		3,316		2,643		9,449
Basic Income Per Share:
Income From Continuing Operations	$	0.01	$	0.06	$	0.07	$	0.06	$	0.20
Net Income	$	0.01	$	0.06	$	0.07	$	0.06	$	0.20
Diluted Income Per Share:
Income From Continuing Operations	$	0.01	$	0.06	$	0.07	$	0.06	$	0.20
Net Income	$	0.01	$	0.06	$	0.07	$	0.06	$	0.20

Note 16: Subsequent Events

On May 31, 2013, the Company amended its existing Credit Facility Agreement, set to mature on March 2, 2014, and entered into a new four-year Credit Facility Agreement which will mature May 31, 2017. The Company also increased its total commitment under the new Credit Facility to $40.0 million to provide more flexibility given the longer term of the agreement and allow for changes in working capital needs in the future. The Company's financial covenant ratios under the new Credit Facility remain unchanged, allowing the company to maintain a maximum leverage ratio of 2.75x and a minimum Fixed Charge Coverage Ratio of 1.75x. Interest charges continue to be based on the bank's prime rate or LIBOR rate plus a percentage spread between 0.00% and 2.25% and based on the Company's current leverage ratio. All the Company's domestic assets and certain interests in some foreign subsidiaries will continue to be pledged as collateral under the amended four-year Credit Facility.

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In addition, on June 7, 2013, the Company announced that its Board of Directors has initiated a process to evaluate strategic alternatives to enhance shareholder value, including, among other things, the potential sale of the Company or other transaction. The Board of Directors has retained a financial advisor to assist it in evaluating these alternatives.

The Company noted that there can be no assurance that the exploration of strategic alternatives will result in any transaction. The Company has not set a timetable for completion of the review process, and it does not intend to comment further regarding the review process unless and until a final decision is made or further disclosure is required by law.

63

FLOW INTERNATIONAL CORPORATION

SCHEDULE II

VALUATION AND QUALIFYING ACCOUNTS

Classifications	Balance at Beginning of Period		Charged to Costs and Expenses		Other			Deductions*			Balance at End of Period
	(In thousands)
Fiscal Year Ended April 30:
Allowance for Doubtful Accounts
2013	$	1,124	$	338	$	—		$	(556	)	$	906
2012	$	1,304	$	531	$	(24	)	$	(687	)	$	1,124
2011	$	1,152	$	434	$	25		$	(307	)	$	1,304

* Write-offs and recoveries of uncollectible accounts

Classifications	Balance at Beginning of Period		Net Change			Balance at End of Period
	(In thousands)
Fiscal Year Ended April 30:
Valuation Allowance on Deferred Tax Assets
2013	$	7,902	$	(267	)	$	7,635
2012	$	9,732	$	(1,830	)	$	7,902
2011	$	10,083	$	(351	)	$	9,732

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Item 9. Changes In and Disagreements with Accountants on Accounting and Financial Disclosure

None.

Item 9A. Controls and Procedures

Disclosure Controls and Procedures

Pursuant to Rule 13a-15(b) of the Securities Exchange Act of 1934, as amended (referenced herein as the Exchange Act), we carried out, under the supervision and with the participation of management, including our Chief Executive Officer and our Chief Financial Officer, an evaluation of the effectiveness of the design and operation of our disclosure controls and procedures (as defined in Rule 13a-15(e) under the Exchange Act) as of April 30, 2013.

Based on that evaluation, our Chief Executive Officer and our Chief Financial Officer concluded that the current disclosure controls and procedures as of April 30, 2013 were not effective due to the material weaknesses in internal control over financial reporting as described below, at a reasonable assurance level, to ensure that information required to be disclosed in reports filed or submitted under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission (“SEC”) rules and forms, and controls and procedures designed to ensure that information required to be disclosed by the Company in such reports is accumulated and communicated to management, including the Chief Executive Officer and Chief Financial Officer, as appropriate to allow timely decisions regarding required disclosures. Notwithstanding the material weaknesses, management including the Chief Executive Officer and the Chief Financial Officer, concluded that the Consolidated Financial Statements included in this Annual report present fairly in all material respects our financial condition, results of operations and cash flows at and for the periods presented in accordance with accounting principles generally accepted in the United States.

Management's Report on Internal Control Over Financial Reporting

Management is responsible for establishing and maintaining adequate internal control over financial reporting (as defined in Rule 13a-15(f) under the Exchange Act). Our internal control over financial reporting is 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. Our 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 our assets; (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 management and our 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 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.

Management assessed the effectiveness of the Company's internal control over financial reporting as of April 30, 2013, using the criteria set forth by the Committee of Sponsoring Organizations of the Treadway Commission in Internal Control - Integrated Framework (1992) (or the COSO criteria). As a result of this assessment, management determined that material weaknesses existed in our internal controls as of April 30, 2013 and consequently, as of April 30, 2013, our internal control over financial reporting was not effective.

A material weakness is defined as a deficiency or a combination of deficiencies, in internal control over financial reporting such that there is a reasonable possibility that a material misstatement of our annual or interim financial statements will not be prevented or detected on a timely basis. The material weaknesses in our internal control over financial reporting are identified as follows:

• Brazil Control Environment. Management determined that we had a material weakness in the control environment within our Brazilian operations, and in our related monitoring of these operations, that resulted in design and operating control deficiencies, including those related to the physical quantities and valuation of inventory and the preparation and review of income taxes for our subsidiary in Brazil.

• Response to Whistleblower Allegations. Our controls over whistleblower allegation investigations were improperly designed and were not effective to perform timely investigations into all whistleblower matters with appropriate scope,

65

procedures, and conclusions reached. We have an effective means for employees and third parties to communicate allegations of fraud or other misconduct to our internal compliance group.

Deloitte & Touche LLP, our independent registered public accounting firm, has audited the effectiveness of our internal control over financial reporting as of April 30, 2013, and its report is included below in this Item 9A.

Changes in Internal Controls

In connection with the evaluation required by paragraph (d) of Rule 13a-15 under the Exchange Act, other than the identification of the material weaknesses noted above, there were no changes identified in our internal control over financial reporting that occurred during our last fiscal quarter that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

Plans for Remediation

We intend to address the material weaknesses identified above by performing the following remediation actions that we believe will improve and strengthen the effectiveness of our disclosure controls and procedures and our internal control over financial reporting including the following:

1. Inventory management. In the short-term, in Brazil we recently terminated two operations managers, and are in the process of enhancing the finance team in Brazil by complementing a recently placed U.S. Expatriate in Brazil as the Regional Controller, with additional resources with the right level of knowledge of local requirements to improve the design of the controls and enhance the internal controlsover our inventory processes. Additionally, management is evaluating the enhancement of its overall monitoring process. Longer-term, we are reviewing alternative software packages for inventory, general ledger and other required modules to minimize the risk inherent in the existing manual processes.

2. Income taxes. We will retain outside tax advisers that are more knowledgeable in Brazilian tax matters to review our tax provision, deferred taxes and assist in the preparation of our income tax returns so that we may utilize this information in our accounting for income taxes. This review will include an evaluation of our transfer pricing practices and an assessment of our uncertain tax positions in this jurisdiction.

3. Response to whistleblower allegations. Management is in the process of formalizing its practices and procedures with respect to its response to future whistleblower allegations and presenting these to the Audit Committee. Such procedures will be designed to assure that investigative procedures over all whistleblower allegations are adequately scoped, performed, concluded upon, remediated and documented independently by personnel with the requisite knowledge and training to resolve any issues or concerns raised. To the extent necessary, we will engage third party resources to augment our internal resources.

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REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Board of Directors and Shareholders of

Flow International Corporation

Kent, Washington

We have audited Flow International Corporation and subsidiaries' (the "Company's") internal control over financial reporting as of April 30, 2013, based on criteria established in Internal Control - Integrated Framework (1992) issued by the Committee of Sponsoring Organizations of the Treadway Commission. The Company'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's 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 that 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 by, or under the supervision of, the company's principal executive and principal financial officers, or persons performing similar functions, and effected by the company's board of directors, management, and other personnel 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 the inherent limitations of internal control over financial reporting, including the possibility of collusion or improper management override of controls, material misstatements due to error or fraud may not be prevented or detected on a timely basis. Also, projections of any evaluation of the effectiveness of the internal control over financial reporting to future periods are subject to the risk that the controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

A material weakness is a deficiency, or a combination of deficiencies, in internal control over financial reporting, such that there is a reasonable possibility that a material misstatement of the company's annual or interim financial statements will not be prevented or detected on a timely basis. The following material weaknesses have been identified and included in management's assessment:

• Brazil Control Environment. The control environment within the Company's Brazilian operations, and the related monitoring of these operations, was ineffective, which resulted in design and operating control deficiencies, including those related to the physical quantities and valuation for inventory and the preparation and review of income taxes for the subsidiary in Brazil.

• Response to Whistleblower Allegations. The Company's controls over whistleblower allegation investigations were improperly designed and were not effective to perform timely investigations into all whistleblower matters with appropriate scope, procedures, and conclusions reached.

These material weaknesses were considered in determining the nature, timing, and extent of audit tests applied in our audit of the consolidated financial statements and financial statement schedule as of and for the year ended April 30, 2013, of the Company and this report does not affect our report on such financial statements and financial statement schedule.

In our opinion, because of the effect of the material weaknesses identified above on the achievement of the objectives of the control criteria, the Company has not maintained effective internal control over financial reporting as of April 30, 2013, based

67

on the criteria established in Internal Control - Integrated Framework (1992) issued by the Committee of Sponsoring Organizations of the Treadway Commission.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the consolidated financial statements and financial statement schedule as of and for the year ended April 30, 2013, of the Company and our report dated July 30, 2013 expressed an unqualified opinion on those financial statements and financial statement schedule.

/s/ Deloitte & Touche LLP

Seattle, Washington

July 30, 2013

68

Item 9B. Other Information

None.

PART III

Item 10. Directors, Executive Officers and Corporate Governance

Information regarding directors and executive officers of the registrant and corporate governance is incorporated herein by reference from our 2013 Proxy Statement.

Item 11. Executive Compensation

Information regarding executive compensation is incorporated herein by reference from our 2013 Proxy Statement.

Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters

Information regarding securities authorized for issuance under equity compensation plans, security ownership of certain beneficial owners and management and related stockholder matters is incorporated herein by reference from our 2013 Proxy Statement.

Item 13. Certain Relationships and Related Transactions, and Director Independence

Information regarding certain relationships, related transactions and director independence is incorporated herein by reference from our 2013 Proxy Statement.

Item 14. Principal Accounting Fees and Services

Information regarding fees paid to our principal accountant and our Audit Committee's pre-approval policies and procedures is incorporated herein by reference from our 2013 Proxy Statement.

PART IV

Item 15. Exhibits, Financial Statement Schedules

(a) The following documents are filed as a part of this report:

1. Consolidated Financial Statements.

See Item 8 of Part II for a list of the Financial Statements filed as part of this report.

2. Financial Statement Schedules.

See Item 8 of Part II for a list of the Financial Statement Schedules filed as part of this report.

3. Exhibits. See subparagraph (b) below.

(b) Exhibits.

Exhibit Number
3.1	Restated Articles of Incorporation, filed with the State of Washington on April 27, 2005. (Incorporated by reference to Exhibit 3(i).1 to the registrant's Form 8-K dated May 3, 2005.)
3.1(b)	Articles of Amendment of Restated Articles of Incorporation, field with the State of Washington on September 10, 2009. (Incorporated by reference to Exhibit 3.1(b) to the registrant's Form 8-K dated September 11, 2009.)
3.2	By-Laws of Flow International Corporation as amended on June 23, 2009. (Incorporated by reference to Exhibit 3.4 to the registrant's Form 8-K dated June 25, 2009.)
10.1	Flow International Corporation 1987 Stock Option Plan for Nonemployee Directors, as amended. (Incorporated by reference to Exhibit 10.5 to the registrant's Annual Report on Form 10-K for the year ended April 30, 1994.)
10.2	Flow International Corporation 1995 Long-Term Incentive Plan. (Incorporated by reference to Exhibit 10.2 to the registrant's Annual Report on Form 10-K for the year ended April 30, 2000.)

69

10.3	Flow International Corporation Voluntary Pension and Salary Deferral Plan and Trust Agreement, as amended and restated effective January 1, 2002. (Incorporated by reference to Exhibit 10.3 to the registrant's Annual Report on Form 10-K for the year ended April 30, 2003.)
10.4	Form of Long Term Incentive Plan for Executives. (Incorporated by reference to Exhibit 10.3 to the Current Report on Form 8-K filed September 27, 2005.)
10.5	Flow International Corporation 2005 Equity Incentive Plan, as amended and restated September 10, 2009. (Incorporated by reference to Exhibit 10.1 to the registrant's Form 8-K dated September 11, 2009.)
10.6	Lease dated January 30, 2003 between Flow International and Property Reserve, Inc., as amended  by First Amendment dated December 20, 2006 and Second Amendment dated January 31, 2012 (Incorporated by reference to Exhibit 10.11 to the registrant's Annual Report on Form 10-K for the year ended April 30, 2003, and Exhibits 10.1 and 10.2 to the registrant's Form 8-K dated February 6, 2012)
10.7	Credit Agreement dated as of June 10, 2009 among Flow International Corporation, Bank of America, N.A. and U.S. Bank National Association. (Incorporated by reference to Exhibit 10.1 to the registrant's Form 8-K dated June 11, 2009.)
10.8	Second Amended and Restated Credit Agreement dated June 10, 2009. (Incorporated by reference to Exhibit 10.1 to the registrant's Form 8-K dated March 3, 2011.)
10.9	First Amendment dated August 28, 2009 to the Second Amended and Restated Credit Agreement. (Incorporated by reference to Exhibit 10.1 to the registrant's Form 8-K dated September 1, 2009.)
10.10	Third Amended and Restated Credit Agreement dated as of March 2, 2011 among Flow International Corporation as the Borrower, Bank of America, N.A. as Agent, Swing Line Lender and L/C Issuer, and Banc of America Securities LLC, as Sole Lead Arranger and Sole Book Manager. (Incorporated by reference to Exhibit 10.1 to the registrant's Form 8-K dated March 3, 2011.)
10.11	First Amendment to Third Amended and Restated Credit Agreement dated as of May 31, 2013, by and among Flow International Corporation as Borrower and Bank of America, N.A., as Lender, Agent, Swing Line Lender and L/C Issuer. (Incorporated by reference to Exhibit 10.1 to the registrant's Form 8-K dated June 6, 2013.)
10.12	Settlement Agreement Including Cross-Licensing Agreement dated March 12, 2009. (Incorporated by reference to Exhibit 10.3 to the registrant's Form 8-K dated March 12, 2009.)
10.13	Employment Agreement dated July 3, 2007 between Flow International Corporation and Charles M. Brown. (Incorporated by reference to Exhibit 99.2 to the registrant's Form 8-K dated July 5, 2007.)
10.14	First Amendment to Employment Agreement dated May 15, 2008 between Flow International Corporation and Charles M. Brown. (Incorporated by reference to Exhibit 99.1 to the registrant's Form 8-K dated May 19, 2008.)
10.15	Severance Agreement by and between Flow International Corporation and Charles M. Brown dated September 21, 2010. (Incorporated by reference to Exhibit 99.1 to the registrant's Form 8-K dated September 23, 2010.)
10.16	Change in Control Agreement by and between Flow International Corporation and Allen Hsieh dated July 1, 2013. (Incorporated by reference to Exhibit 10.1 to the registrant's Form 8-K dated July 1, 2013.)
10.17	Change in Control Agreement by and between Flow International Corporation and Richard A. LeBlanc dated July 1, 2013. (Incorporated by reference to Exhibit 10.2 to the registrant's Form 8-K dated July 1, 2013.)
10.18	Change in Control Agreement by and between Flow International Corporation and John S. LenessLeBlanc dated July 1, 2013. (Incorporated by reference to Exhibit 10.3 to the registrant's Form 8-K dated July 1, 2013.)
21.1	Subsidiaries of the Registrant*
23.1	Consent of Deloitte & Touche LLP, Independent Registered Public Accounting Firm*
31.1	Certification Pursuant to Rule 13a-14(a), as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.*
31.2	Certification Pursuant to Rule 13a-14(a), as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.*
32.1	Certification Pursuant to the 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.*
99.1	Debt Covenant Compliance as of April 30, 2013*
*	Filed herewith.

70

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this Form 10-K to be signed on its behalf by the undersigned, thereunto duly authorized.

FLOW INTERNATIONAL CORPORATION

/s/ Charles M. Brown

Charles M. Brown

President and Chief Executive Officer

(Principle Executive Officer)

July 30, 2013

Pursuant to the requirements of the Securities Exchange Act of 1934, this Form 10-K has been signed below by the following persons on behalf of the registrant and in the capacities indicated on July 30, 2013.

Signature	Title
/s/ Charles M. Brown	President and Chief Executive Officer
Charles M. Brown	(Principal Executive Officer)
/s/ Allen M. Hsieh	Vice President and Chief Financial Officer
Allen M. Hsieh	(Principal Financial and Accounting Officer)
/s/ Jerry L. Calhoun	Chairman
Jerry L. Calhoun
/s/ Patrick J. Byrne	Director
Patrick J. Byrne
/s/ Richard P. Fox	Director
Richard P. Fox
/s/ Robert S. Jaffe	Director
Robert S. Jaffe
/s/ Larry A. Kring	Director
Larry A. Kring
/s/ Lorenzo C. Lamadrid	Director
Lorenzo C. Lamadrid
/s/ Bradley D. Tilden	Director
Bradley D. Tilden

71

EX-21.1

Exhibit 21.1

SUBSIDIARIES OF THE REGISTRANT
Subsidiary	State or Other Jurisdiction of Incorporation or Organization
Flow Asia International Ltd	Mauritius
Flow Latino Americana Industria e Comercio Ltda	Brazil
Flow Holdings SAGL	Switzerland
Flow Holding Limited	United Kingdom
Flow Europe GmbH	Germany
Flow Italia, SRL	Italy
Flow Eastern Europe, S.R.O.	Czech Republic
Flow Iberica Corte Con Aqua Alta Presion, S.L.	Spain
Flow U.K. Ltd.	United Kingdom
Flow France Sarl.	France
Flow Japan Corporation	Japan
Flow Asia Corporation	Taiwan
Flow Taiwan International Corporation	Taiwan
Caitra Technologies Incorporated	Washington
Flow Ultra High Pressure Waterjet Technology (Shanghai) Co., Ltd	Shanghai
Flow Waterjet Hong Kong Limited	Hong Kong
Flow Automation System ULC	Canada
Flow Bangalore Waterjet Private Limited	India

EX-23.1

Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in Registration Statement No. 333-160076 on Form S-3 of our reports dated July 30, 2013, relating to the consolidated financial statements and financial statement schedule of Flow International Corporation and subsidiaries and the effectiveness of Flow International Corporation's internal control over financial reporting, which expressed an adverse opinion on the Company's internal control over financial reporting because of two material weaknesses, appearing in this Annual Report on Form 10-K of Flow International Corporation for the year ended April 30, 2013.

/s/Deloitte & Touche LLP

Seattle, Washington

July 30, 2013

EX-31.1

Exhibit 31.1

CERTIFICATION PURSUANT TO

RULE 13a-14(a), AS ADOPTED PURSUANT TO

SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Charles M. Brown, certify that:

1. I have reviewed this annual report on Form 10-K for the year ended April 30, 2013 of Flow International 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 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 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 registrant's board of directors (or persons performing the equivalent function):

a. all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting that 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.

/s/ Charles M. Brown

Charles M. Brown

Principal Executive Officer

July 30, 2013

EX-31.2

Exhibit 31.2

CERTIFICATION PURSUANT TO

RULE 13a-14(a), AS ADOPTED PURSUANT TO

SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Allen M. Hsieh, certify that:

1. I have reviewed this annual report on Form 10-K for the year ended April 30, 2013 of Flow International 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 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 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 registrant's board of directors (or persons performing the equivalent function):

a. all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting that 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.

/s/ Allen M. Hsieh

Allen M. Hsieh

Principal Financial and Accounting Officer

July 30, 2013

EX-32.1

Exhibit 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350, AS ADOPTED BY

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report of Flow International Corporation, a Washington corporation (the “Company”), on Form 10-K for the fiscal year ended April 30, 2013 as filed with the Securities and Exchange Commission (the “Report”), I, Charles M. Brown, Principal Executive Officer of the Company, and Allen M. Hsieh, Principal Financial and Accounting Officer of the Company certify, pursuant to § 906 of the Sarbanes-Oxley Act of 2002 (18 U.S.C. § 1350), that:

(1) The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Charles M. Brown
Charles M. Brown	July 30, 2013
Principal Executive Officer
/s/ Allen M. Hsieh
Allen M. Hsieh	July 30, 2013
Principal Financial and Accounting Officer

EX-99.1

Exhibit 99.1

DEBT COVENANT COMPLIANCE

AS OF APRIL 30, 2013

Adjusted EBITDA:

(in 000s)	LTM (i)		Q1 FY13		Q2 FY13		Q3 FY13		Q4 FY13
Net Income	$	5,037	$	2,221	$	2,110	$	2,611	$	(1,905	)
Add Back:
Depreciation and Amortization	5,919		1,426		1,413		1,546		1,534
Income Tax Provision	5,129		1,477		1,352		1,551		749
Interest Charges	1,573		340		325		297		611
Non-Cash Charges	3,528		927		768		942		891
Adjusted EBITDA	$	21,186	$	6,391	$	5,968	$	6,947	$	1,880
I. Consolidated Leverage Ratio
A. Total Long-Term Obligations and Notes Payable (ii)	$	18,977
B. Adjusted EBITDA	$	21,186
C. Consolidated Leverage Ratio (Line I.A / Line I.B)	0.90
Maximum Permitted	2.75x to 1
II. Consolidated Fixed Charge Coverage Ratio (i)
A. Adjusted EBITDA
1. Consolidated Net Income	$	5,037
2. Consolidated Interest Charges	$	1,573
3. Provision for income taxes	$	5,129
4. Depreciation expenses	$	5,357
5. Amortization expenses	$	562
6. Non-recurring non-cash reductions of Consolidated Net Income	$	3,528
7. Adjusted EBITDA (Lines II.A.1 + 2 + 3 + 4 + 5 + 6)	$	21,186
B. Cash payments for taxes	$	2,381
C. Maintenance Capital Expenditures	$	2,000
D. Consolidated Interest Charges (except non-cash interest)	$	1,303
E. Current portion of other long term debt (iii)	$	35
F. Consolidated Fixed Charge Coverage Ratio ((Line II.A.7 - Line II.B - Line II.C) / (Line II.D + Line II.E)	12.6
Minimum required	1.75x to 1

____________

Notes:

(i) Last Twelve Months (Most Recent Four Fiscal Quarters)

(ii) Includes letters of credit of $8.4 million and excludes subordinated debt

(iii) Represents current portion of other long-term debt as of April 30, 2013

XML

Basic and Diluted Income (Loss) Per Share

12 Months Ended

Apr. 30, 2013

Earnings Per Share, Basic and Diluted [Abstract]

Earnings Per Share

Basic and Diluted Income per Share

Basic income per share is calculated by dividing income from continuing operations by the weighted average number of common shares outstanding during the period. Diluted income per share is calculated by dividing income from continuing operations by the weighted average number of common shares and potential common shares outstanding during the period. Potential dilutive common shares consist of the incremental common shares issuable upon the exercise of outstanding employee stock options and non-vested restricted stock units as determined under the treasury stock method, except where their inclusion would be antidilutive.

The following table sets forth the computation of basic and diluted income (loss) from continuing operations per share:

	Fiscal Year Ended April 30,
	2013		2012		2011
Income from Continuing Operations	5,172		$	9,389	$	1,008
Weighted average shares used in computing basic income per share	48,312		47,766		47,216
Dilutive potential common shares from employee stock options and restricted stock units	748		—		12
Weighted average shares used in computing diluted income per share	49,060		47,766		47,228
Basic and diluted income from continuing operations per share	$	0.11	$	0.20	$	0.02

There were 0.9 million, 2.2 million and 2.1 million potentially dilutive common shares from employee stock options and stock units which were excluded from the diluted weighted average per share calculation for the respective fiscal years ended April 30, 2013, 2012 and 2011 as their effect would be antidilutive.

XML

Shareholders' Equity - Service-Based Stock Activity (Details) (Service-Based Stock Awards [Member], USD $)	12 Months Ended
	Apr. 30, 2013	Apr. 30, 2012	Apr. 30, 2011
Weighted-Average Grant Date Fair Value (in dollars per share)
Share-based compensation expense	$ 2,500,000	$ 3,200,000	$ 1,800,000
The 2005 Plan [Member]
Number of Shares
Nonvested at Beginning of Period	1,779,265	1,634,778	1,237,959
Granted	811,461	846,508	838,666
Vested	(641,709)	(653,447)	(348,240)
Forfeited	(220,013)	(48,574)	(93,607)
Nonvested at End of Period	1,729,004	1,779,265	1,634,778
Weighted-Average Grant Date Fair Value (in dollars per share)
Nonvested at Beginning of Period	$ 3.25	$ 2.90	$ 3.57
Granted	$ 2.93	$ 3.44	$ 2.29
Vested	$ 3.47	$ 2.61	$ 3.81
Forfeited	$ 3.18	$ 3.26	$ 2.86
Nonvested at End of Period	$ 3.03	$ 3.25	$ 2.90
Unrecognized compensation cost	3,500,000
Unrecognized compensation cost, period for recognition	2 years
The 2005 Plan [Member] | Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Eligible annual award	$ 40,000

XML

Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Apr. 30, 2013	Apr. 30, 2012	Apr. 30, 2011
Income Statement [Abstract]
Sales	$ 259,338	$ 253,768	$ 216,524
Cost of Sales	161,416	154,400	132,063
Gross Margin	97,922	99,368	84,461
Operating Expenses:
Sales and Marketing	50,251	49,454	45,359
Research and Engineering	11,431	10,863	10,074
General and Administrative	23,573	24,382	24,141
Total Operating Expenses	85,255	84,699	79,574
Operating Income	12,667	14,669	4,887
Interest Income	224	62	106
Interest Expense	(1,573)	(1,112)	(1,776)
Other Income (Expense), net	(1,017)	(954)	686
Income Before Taxes	10,301	12,665	3,903
Provision for Income Taxes	(5,129)	(3,276)	(2,895)
Income from Continuing Operations	5,172	9,389	1,008
Income (Loss) from Discontinued Operations, net of Income Tax	(135)	60	(242)
Net Income	$ 5,037	$ 9,449	$ 766
Basic and Diluted Income Per Share:
Income from Continuing Operations (in dollars per share)	$ 0.11	$ 0.20	$ 0.02
Discontinued Operations (in dollars per share)	$ (0.01)	$ 0.00	$ 0.00
Net Income (in dollars per share)	$ 0.10	$ 0.20	$ 0.02
Weighted Average Shares Used in Computing Basic and Diluted Income Per Share:
Weighted average shares used in computing basic income per share	48,312	47,766	47,216
Diluted (in shares)	49,060	47,766	47,228

XML

Inventories

12 Months Ended

Apr. 30, 2013

Inventory Disclosure [Abstract]

Inventories

Inventories

Inventories consisted of the following:

	April 30,
	2013		2012
Raw Materials and Parts	$	25,409	$	26,247
Work in Process	3,365		3,313
Finished Goods	12,285		10,509
Inventories	$	41,059	$	40,069

XML

Schedule II - Valuation and Qualifying Accounts

12 Months Ended

Apr. 30, 2013

Valuation and Qualifying Accounts [Abstract]

Schedule II - Valuation and Qualifying Accounts

FLOW INTERNATIONAL CORPORATION

SCHEDULE II

VALUATION AND QUALIFYING ACCOUNTS

Classifications	Balance at Beginning of Period		Charged to Costs and Expenses		Other			Deductions*			Balance at End of Period
	(In thousands)
Fiscal Year Ended April 30:
Allowance for Doubtful Accounts
2013	$	1,124	$	338	$	—		$	(556	)	$	906
2012	$	1,304	$	531	$	(24	)	$	(687	)	$	1,124
2011	$	1,152	$	434	$	25		$	(307	)	$	1,304

* Write-offs and recoveries of uncollectible accounts

Classifications	Balance at Beginning of Period		Net Change			Balance at End of Period
	(In thousands)
Fiscal Year Ended April 30:
Valuation Allowance on Deferred Tax Assets
2013	$	7,902	$	(267	)	$	7,635
2012	$	9,732	$	(1,830	)	$	7,902
2011	$	10,083	$	(351	)	$	9,732

XML

Business Segments and Geographic Information - Schedule of Sales to Unaffiliated Customers and Long-Lived Assets by Geographical Region (Details) (USD $)	3 Months Ended								12 Months Ended
	Apr. 30, 2013	Jan. 31, 2013	Oct. 31, 2012	Jul. 31, 2012	Apr. 30, 2012	Jan. 31, 2012	Oct. 31, 2011	Jul. 31, 2011	Apr. 30, 2013		Apr. 30, 2012		Apr. 30, 2011
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales by Geographic Region	$ 58,407,000	$ 67,658,000	$ 67,038,000	$ 66,235,000	$ 63,397,000	$ 65,808,000	$ 64,533,000	$ 60,030,000	$ 259,338,000		$ 253,768,000		$ 216,524,000
Long-Lived Assets	45,634,000				51,521,000				45,634,000		51,521,000
Revenue from external customers attributed to foreign countries									30,700,000		27,200,000		25,500,000
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales by Geographic Region									139,829,000	[1]	130,342,000	[1]	118,882,000	[1]
Long-Lived Assets	37,828,000				43,194,000				37,828,000		43,194,000
Europe, Middle East, Africa [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales by Geographic Region									50,704,000		51,429,000		42,929,000
Long-Lived Assets	5,572,000				5,858,000				5,572,000		5,858,000
Asia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales by Geographic Region									40,344,000		41,119,000		32,011,000
Long-Lived Assets	1,470,000				1,562,000				1,470,000		1,562,000
Latin America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales by Geographic Region									26,061,000		28,365,000		20,373,000
Long-Lived Assets	764,000				907,000				764,000		907,000
Other Foreign [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales by Geographic Region									2,400,000		2,513,000		2,329,000
Long-Lived Assets	$ 0				$ 0				$ 0		$ 0

[1] U.S. sales to unaffiliated customers in foreign countries were $30.7 million, $27.2 million, and $25.5 million in fiscal years 2013, 2012, and 2011, respectively.

XML

Basic and Diluted Income (Loss) Per Share - Additional Information (Details) (Stock Options and Stock Units [Member]) In Millions, unless otherwise specified	12 Months Ended
	Apr. 30, 2013	Apr. 30, 2012	Apr. 30, 2011
Stock Options and Stock Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities excluded from computation of earnings per share	0.9	2.2	2.1

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Other Income (Expense), Net

12 Months Ended

Apr. 30, 2013

Other Income and Expenses [Abstract]

Other Expense, Net

Other Income (Expense), Net

The following table summarizes the detail of Other Income (Expense), net:

	Fiscal Year Ended April 30,
	2013			2012			2011
Realized Foreign Exchange Gains (Losses), net	$	(462	)	$	(249	)	$	177
Unrealized Foreign Exchange Gains (Losses), net	(448		)	(587		)	412
Other	(107		)	(118		)	97
Other Income (Expense), net	$	(1,017	)	$	(954	)	$	686

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Commitments and Contingencies - Warranty Obligations (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Apr. 30, 2013	Apr. 30, 2012	Apr. 30, 2011
Movement in Standard Product Warranty Accrual [Roll Forward]
Beginning Balance	$ 3,013	$ 2,804	$ 2,533
Increase in warranty liability on fiscal year sales	5,880	4,235	2,695
Reduction in warranty liability for claims in fiscal year	(5,169)	(4,026)	(2,424)
Ending Balance	$ 3,724	$ 3,013	$ 2,804

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Other Income (Expense), Net (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Apr. 30, 2013	Apr. 30, 2012	Apr. 30, 2011
Other Income and Expenses [Abstract]
Realized Foreign Exchange Gains (Losses), net	$ (462)	$ (249)	$ 177
Unrealized Foreign Exchange Gains (Losses), net	(448)	(587)	412
Other	(107)	(118)	97
Other Income (Expense), net	$ (1,017)	$ (954)	$ 686

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The Company and Summary of Significant Accounting Policies (Details) (USD $)	12 Months Ended
	Apr. 30, 2013	Apr. 30, 2012	Apr. 30, 2011
Research and Engineering:
Research and engineering expense	$ 11,431,000	$ 10,863,000	$ 10,074,000
Research and engineering benefit	800,000
Health Benefits:
Self insurance expense	4,200,000	3,600,000	3,500,000
Self insurance reserve	$ 400,000	$ 300,000
Patents [Member]
Health Benefits:
Finite-lived intangible asset, useful life	20 years

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Inventories (Tables)

12 Months Ended

Apr. 30, 2013

Inventory Disclosure [Abstract]

Schedule of Inventory

Inventories consisted of the following:

	April 30,
	2013		2012
Raw Materials and Parts	$	25,409	$	26,247
Work in Process	3,365		3,313
Finished Goods	12,285		10,509
Inventories	$	41,059	$	40,069

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Receivables, Net (Tables)

12 Months Ended

Apr. 30, 2013

Receivables [Abstract]

Schedule of Receivables, Net

Net Receivables consisted of the following:

	April 30,
	2013			2012
Trade Accounts Receivable	$	31,893		$	36,802
Unbilled Revenues	11,754			11,152
	43,647			47,954
Less: Allowance for Doubtful Accounts	(906		)	(1,124		)
Receivables, net	$	42,741		$	46,830

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Debt (Details) (USD $)						12 Months Ended
	Apr. 30, 2013	Apr. 30, 2012	Apr. 30, 2013 Domestic Line of Credit [Member]	Apr. 30, 2013 Domestic Line of Credit [Member] Minimum [Member]	Apr. 30, 2013 Domestic Line of Credit [Member] Maximum [Member]	Apr. 30, 2013 Domestic Line of Credit [Member] Prime Rate [Member]	Apr. 30, 2013 Domestic Line of Credit [Member] LIBOR [Member]	Apr. 30, 2013 Letter of Credit [Member]	Apr. 30, 2013 Foreign Line of Credit [Member] Taiwan Credit Facility [Member]	Apr. 30, 2013 Subordinated Debt [Member] 2% Percent Suboridnated Notes Due August 2013 [Member]	Apr. 30, 2010 Subordinated Debt [Member] 2% Percent Suboridnated Notes Due August 2013 [Member]
Debt Instrument [Line Items]
Debt Face Amount											$ 10,000,000
Debt Stated Interest Rate									2.60%		2.00%
Long-Term Debt										10,800,000
Long-Term Debt, Current Portion	10,559,000	0								10,600,000
Credit Facility, Maximum Borrowing Capacity			25,000,000						1,400,000
Credit Facility, Consolidated Leverage Ratio			0.90		2.75
Credit Facility, Fixed Charge Coverage Ratio			12.6	1.75
Credit Facility, Variable Rate Basis						prime rate	LIBOR
Credit Facility, Basis Spread on Variable Rate				0.00%	2.25%
Letters of Credit, Commitment Fee				1.25%	2.25%
Credit Facility, Remaining Borrowing Capacity			16,623,000
Letters of Credit, Outstanding								8,400,000
Credit Facility, Amount Outstanding			$ 0						$ 0

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Other Income (Expense), Net (Tables)

12 Months Ended

Apr. 30, 2013

Other Income and Expenses [Abstract]

Schedule Other Expense, Net

The following table summarizes the detail of Other Income (Expense), net:

	Fiscal Year Ended April 30,
	2013			2012			2011
Realized Foreign Exchange Gains (Losses), net	$	(462	)	$	(249	)	$	177
Unrealized Foreign Exchange Gains (Losses), net	(448		)	(587		)	412
Other	(107		)	(118		)	97
Other Income (Expense), net	$	(1,017	)	$	(954	)	$	686

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Inventories (Details) (USD $) In Thousands, unless otherwise specified	Apr. 30, 2013	Apr. 30, 2012
Inventory Disclosure [Abstract]
Raw Materials and Parts	$ 25,409	$ 26,247
Work in Process	3,365	3,313
Finished Goods	12,285	10,509
Inventories	$ 41,059	$ 40,069

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Commitments and Contingencies - Additional Information (Details) In Millions, unless otherwise specified	12 Months Ended				1 Months Ended			12 Months Ended
	Apr. 30, 2013 USD ($)	Apr. 30, 2012 USD ($)	Apr. 30, 2011 USD ($)	Apr. 30, 2013 Insurance Claims Received [Member] Lumbermens Mutual Casualty Company vs Flow International [Member] Pending Litigation [Member] USD ($)	Nov. 30, 2009 Taxes, Penalties, and Fines [Member] Swedish Tax Authority vs. Avure [Member] Pending Litigation [Member] USD ($)	Nov. 30, 2009 Taxes, Penalties, and Fines [Member] Swedish Tax Authority vs. Avure [Member] Pending Litigation [Member] SEK	Apr. 30, 2013 Taxes, Penalties, and Fines [Member] Swedish Tax Authority vs. Avure [Member] Pending Litigation [Member] USD ($)	Apr. 30, 2013 Minimum [Member]	Apr. 30, 2013 Maximum [Member]
Operating Leases:
Lease renewal period								2 years	5 years
Rent expense	$ 3.1	$ 3.1	$ 3.2
Litigation settlement				3.4
Loss contingency, minimum				0
Loss contingency, maximum				3.4
Loss contingency, damages sought					2.8	19.5
Loss contingency accrual							$ 1.3

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Pension and Other Post Retirement Benefits (Tables)

12 Months Ended

Apr. 30, 2013

Compensation and Retirement Disclosure [Abstract]

Schedule of Changes in Projected Benefit Obligations

	Fiscal Year Ended April 30,
	2013			2012
Changes in the Projected Benefit Obligation
Projected Benefit Obligation - Beginning Balance	$	1,361		$	1,327
Service Cost	15			18
Interest Cost	25			26
Actuarial Loss	54			8
Benefits Paid	—			—
Foreign Exchange Adjustment	(10		)	(18		)
Projected Benefit Obligation - Ending Balance	$	1,445		$	1,361

Schedule of Changes in Fair Value of Plan Assets

	Fiscal Year Ended April 30,
	2013			2012
Changes in the Value of Plan Assets
Fair Value of Plan Assets - Beginning Balance	$	1,013		$	992
Actual Return on Plan Assets	13			9
Employer Contribution	27			26
Benefits Paid	—			—
Foreign Exchange Adjustment	(8		)	(14		)
Fair Value of Plan Assets - Ending Balance	$	1,045		$	1,013

Schedule of Assumptions Used

Actuarial assumptions used to determine benefit obligations were as follows:

	Fiscal Year Ended April 30,
	2013		2012
Discount Rate	1.75	%	1.90	%
Expected Rate of Return on Assets	1.75	%	1.90	%
Salary Increase Rate	3.00	%	3.00	%

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Income Taxes - Additional Information (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Apr. 30, 2011	Apr. 30, 2013
Income Tax Contingency [Line Items]
Capital Loss Carryforwards		$ 1.3
Cash Dividends Paid to Parent Company by Consolidated Subsidiaries	1.9
Effect on Equity if and when Deferred Tax Assets are Realized		1.6
Unrecognized Tax Benefits that Would Impact Effective Tax Rate		7.3
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit		0.4
Internal Revenue Service (IRS) [Member]
Income Tax Contingency [Line Items]
Operating Loss Carryforwards		43.2
State and Local Jurisdiction [Member]
Income Tax Contingency [Line Items]
Operating Loss Carryforwards		33.0
Foreign Tax Authority [Member]
Income Tax Contingency [Line Items]
Operating Loss Carryforwards		38.4
Operating Loss Carryforwards, Valuation Allowance		$ 23.8

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Income Taxes - Unrecognized Tax Benefit (Details) (USD $)	12 Months Ended
	Apr. 30, 2013	Apr. 30, 2012	Apr. 30, 2011
Income Tax Disclosure [Abstract]
Undistributed Earnings of Foreign Subsidiaries	$ 15,700,000
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance, beginning of year	6,766,000	9,796,000	9,247,000
Gross increases - tax positions in current period	140,000	114,000	102,000
Gross increases - tax positions in prior periods	415,000	33,000	360,000
Gross increases in tax positions due to currency fluctuations			87,000
Gross decreases in tax positions due to currency fluctuations	(9,000)	(47,000)
Gross decreases - tax positions in prior periods	(54,000)	(3,130,000)
Balance, end of year	$ 7,258,000	$ 6,766,000	$ 9,796,000

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Intangible Assets - Finite Lived Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	Apr. 30, 2013	Apr. 30, 2012
Goodwill and Intangible Assets Disclosure [Abstract]
Patents	$ 7,110	$ 6,531
Less: Accumulated Amortization	(3,189)	(2,729)
Patents, net	$ 3,921	$ 3,802

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Subsequent Events (Details) (Subsequent Event [Member], Domestic Line of Credit [Member], USD $)	0 Months Ended
	May 31, 2013
Subsequent Event [Line Items]
Amended Credit Facility, Maximum Borrowing Capacity	$ 40,000,000
Maximum [Member]
Subsequent Event [Line Items]
Amended Consolidated Leverage Ratio	2.75
Amended Credit Facility, Basis Spread on Variable Rate	2.25%
Minimum [Member]
Subsequent Event [Line Items]
Amended Fixed Charge Coverage Ratio	1.75
Amended Credit Facility, Basis Spread on Variable Rate	0.00%
Prime Rate [Member]
Subsequent Event [Line Items]
Amended Credit Facility, Variable Rate Basis	prime rate
LIBOR [Member]
Subsequent Event [Line Items]
Amended Credit Facility, Variable Rate Basis	LIBOR

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The Company and Summary of Significant Accounting Policies (Policies)

12 Months Ended

Apr. 30, 2013

Accounting Policies [Abstract]

Operations and Segments

Operations and Segments

Flow International Corporation and its subsidiaries (hereinafter collectively referred to as “the Company”, “we”, or “our” unless the context requires otherwise) is a global technology-based manufacturing company committed to providing a world class customer experience. The Company offers technological leadership and exceptional waterjet performance to a wide-ranging customer base, benefiting many cutting and surface preparation applications, delivering profitable waterjet solutions, and dynamic business growth opportunities for our customers. Our ultrahigh-pressure water pumps generate pressures from 40,000 to over 94,000 pounds per square inch (psi) and power waterjet systems that are used to cut materials, remove coatings, and prepare surfaces for coating. Waterjet cutting and cleaning is a fast-growing alternative to traditional methods, such as lasers, saws, knives, shears, plasma, electrical discharge machining ("EDM"), routers, drills, soda blasting and abrasive blasting techniques, and has uses in many applications from food and paper products to steel and carbon fiber composites.

The Company reports its operating results to its Chief Executive Officer, who is the chief operating decision maker, based on market segments, which is consistent with management's long-term growth strategy. The Company has two reportable segments: Standard and Advanced. The Standard segment includes sales and cost of sales related to the Company's cutting and surface preparation systems using ultrahigh-pressure water pumps, as well as parts and services to sustain these installed systems. Systems included in this segment do not require significant custom configuration. The Advanced segment includes sales and cost of sales related to complex Advanced segment systems which require specific custom configuration and advanced features, including robotics, to match unique customer applications.

Financial information about the Company's segments is included in Note 14 -Business Segments and Geographic Information.

Principles of Consolidation

Principles of Consolidation

The consolidated financial statements include the accounts of Flow International Corporation and its wholly-owned subsidiaries. All intercompany transactions and accounts have been eliminated in consolidation. The Company accounts for its investments in non-marketable equity securities of less than 20% ownership that do not have a readily determinable fair value under the cost method of accounting.

Foreign Currency Translation

Foreign Currency Translation

The local currency is the functional currency for all operations outside of the United States. Assets and liabilities are translated at the exchange rate in effect as of our balance sheet date. Revenues and expenses are translated at the average monthly exchange rates throughout the year. The effects of exchange rate fluctuations in translating assets and liabilities of international operations into U.S. dollars are accumulated and reflected as a cumulative translation adjustment in the accompanying Consolidated Statements of Comprehensive Income.

Use of Estimates

Use of Estimates

The Company prepares its consolidated financial statements in conformity with accounting principles generally accepted in the United States of America. The preparation of these consolidated financial statements requires management to make certain assumptions and estimates about future events, and apply judgments that affect the reported amount of assets and liabilities, revenues and expenses, and related disclosure of contingent assets and liabilities at the date of the consolidated financial statements. The Company bases its assumptions, estimates, and judgment on historical experience, current trends and other factors which management believes to be relevant and appropriate at the time the consolidated financial statements are prepared. Actual results could differ from management's estimates and assumptions.

Revenue Recognition

Revenue Recognition

The Company sells ultrahigh-pressure waterjet systems. Sales of waterjet systems within the Standard segment are primarily related to the Company's cutting and surface preparation systems using ultrahigh-pressure water pumps and do not require significant custom configuration or modifications. Installation of these waterjet systems by the Company is not essential to the functionality of the waterjet systems, but the Company does provide installation as a separate service. Sales of waterjet systems within the Advanced segment are generally complex aerospace and automation systems, which require specific custom configuration and advanced features to match unique customer applications. Installation by the Company is essential to the functionality of waterjet systems sold within the Advanced segment.

The Company recognizes revenue, net of excise and sales taxes, when it is realized or realizable and earned. The Company considers these criteria met when persuasive evidence of an arrangement exists, delivery has occurred or services have been rendered, the sales price is fixed or determinable, and collectibility is reasonably assured.

Revenue for sales of ultrahigh-pressure waterjet pumps, consumables and services, and billing for freight charges, is recognized by the Company in accordance with Accounting Standard Codification ("ASC") 605, Revenue Recognition, (“ASC 605”), when the customer has assumed risk of loss of the goods sold and all performance obligations are complete, or over the period as services are rendered.

The Company recognizes revenue on its Standard segment waterjet systems which do not require significant modification or customization in accordance with ASC 605-25, Multiple-Element Arrangements. Standard segment waterjet systems contain two separate deliverables consisting of the system and installation services. The deliverables are treated as separate units of accounting. Standard segment waterjet systems also include a proprietary software component which functions together with the hardware to deliver the systems' essential functionality. Management performs an analysis to determine the relative selling price of each unit of accounting, and it has established vendor-specific objective evidence ("VSOE") for its system hardware and installation services based on standalone transactions.

The Company allocates consideration received to its deliverables at the inception of an arrangement based on their relative selling price, and the applicable revenue recognition criteria are applied to each of the separate units of accounting. In instances where the Company has not established VSOE for its Standard segment waterjet deliverables, it will use the estimated selling price ("ESP") in accordance with the selling price hierarchy to allocate arrangement consideration to each unit of accounting until such time that VSOE exists. Estimated selling prices would be determined by considering multiple factors, which may include existing and forecasted market conditions, internal costs, gross margin objectives, prior pricing practices, and geographic market strategies. The Company uses estimated selling prices in the absence of VSOE since it is unable to establish comparable third-party evidence of selling price for its deliverables based on limited availability of information and the level of customization and differentiation of similar products. Furthermore, the Company is unable to reliably determine what similar competitor product selling prices are on a standalone basis.

In general, sales of the Company's waterjet systems within its Standard segment are FOB shipping point or FOB destination, depending on geographical location, and the title passes to the customer based on the specific terms in each contract.

Deferred revenue is recorded for products or services that have not been provided but have been invoiced under contractual agreements or paid for by a customer, or when products or services have been provided but all the criteria for revenue recognition have not been met.

For complex aerospace and application systems designed and manufactured to buyers' specification, the Company recognizes revenue using the percentage of completion method in accordance with ASC 605-35, Construction-Type and Production-Type Contracts. Typical lead times can range from 12 to 24 months. Sales and profits on such contracts are recorded based on the ratio of total actual incurred costs to date to the total estimated costs for each contract (the “cost-to-cost” method). Management reviews these estimates as work progresses and the effect of any change in cost estimates is reflected in the calculation of the expected margin and the percent complete. If the contract is projected to generate a loss, the entire estimated loss is recognized in the period such loss first becomes known. Accounting for the profit on a contract requires (1) the total contract value, (2) the estimated total cost to complete, which is equal to the sum of the actual incurred costs to date on the contract and the estimated costs to complete the scope of work, and (3) the measurement of progress towards completion. The estimated profit or loss on a contract is equal to the difference between the contract value and the estimated total cost to completion. Adjustments to original cost estimates may be required as work progresses under a contract, as experience is gained and as more information is obtained, even though the scope of work required under the contract may not change, or if contract modifications occur. For contract modifications supported by a change in contract price, profit on such contract modifications are only recognized upon receipt of a signed contract amendment and only in the proportion of such contract's progress towards completion. For modifications not supported by a change in contract price, those additional costs are treated as contract costs and charged to expense in the proportion of such contract's progress towards completion.

A number of internal and external factors affect the Company's cost of sales estimates, including material costs, labor rates and efficiency variances and installation and testing requirements. While management believes that the Company's historical experience provides a sound basis for its estimates, changes in the customer's requirements, design or other changes in the specifications, or in the timing of delivery and installation may affect the timing of revenue related to, or the gross margin on, a system if they are substantially different from what was anticipated. The complexity of the estimation process and issues related to the assumptions, risks and uncertainties inherent with the application of the percentage of completion method affect the amounts reported in our financial statements.

Shipping revenues and expenses are recorded in revenue and cost of goods sold, respectively.

Cost of Sales

Cost of Sales

Cost of sales are generally recognized when products are shipped or services are delivered. In the case of waterjet systems, cost of sales for delivered systems are generally recognized in the period when the revenue for the waterjet system sale is recognized. Cost of sales includes direct and indirect costs associated with the manufacture, installation and service of the Company's systems and consumable parts sales, including estimated future warranty obligations. Direct costs include material and labor, while indirect costs include, but are not limited to, depreciation, inbound freight charges, purchasing and receiving costs, inspection costs, warehousing costs, internal transfer costs and other costs of the Company's distribution network.

Allowance for Doubtful Accounts

Allowance for Doubtful Accounts

The allowance for doubtful accounts is the Company's best estimate of the amount of probable credit losses on existing receivables. The Company estimates the allowance based on the age of the related receivables, knowledge of the financial condition of its customers, review of historical receivables and reserve trends and other relevant information. Account balances are charged against the allowance when the Company determines that it is probable the receivable will not be recovered.

Inventories

Inventories

Inventories are stated at the lower of cost or market. Costs included in inventories consist of materials, labor and manufacturing overhead, which are related to the purchase or production of inventories. The Company uses the first-in, first-out method to determine its cost of inventories.

The Company writes-down obsolete or excess parts and equipment inventory that is no longer used due to design changes to its products or lack of customer demand. The Company regularly monitors its inventory levels and, if it identifies an excess condition based on its usage, the Company records a corresponding inventory reserve which establishes a new cost basis for its inventory. Subsequent changes in facts or circumstances do not result in the reversal of previously recorded markdowns or an increase in that newly established cost basis. The amount of inventory write-down requires the use of management judgment regarding technological obsolescence and forecasted customer demand.

Warranty Liability

Warranty Liability

Products are warranted to be free from material defects for a period of at least one year from the date of installation. Warranty obligations are limited to the repair or replacement of products. Warranty liability is recorded at time of the sale. The Company's warranty accrual is reviewed quarterly by management for adequacy based upon recent shipments and historical warranty experience. Credit is issued upon receipt of the returned goods, or, if material, at the time of notification and approval.

Research and Engineering

Research and Engineering

The majority of research and engineering expenses are related to research and development efforts undertaken by the Company which are expensed as incurred.

Stock-Based Compensation

Stock-Based Compensation

Compensation cost for stock options or restricted stock units is measured at fair value on the dates they are granted or modified and recognized on a straight-line basis over the requisite service period, and adjusted for forfeitures expected to occur over the vesting period of the award. The fair value of restricted stock units is determined based on the number of shares granted and the quoted price of the Company's common stock. The Company estimates the grant-date fair value of stock options using the Black-Scholes option valuation model. Refer to Note 9 -Shareholders' Equity for further information related to the Company's stock compensation plans.

Health Benefits

Health Benefits

The Company is self-insured for a portion of the cost of employee group health insurance, medical, dental, and vision in the United States. The Company maintains excess loss insurance that covers health care costs in excess of $125,000 per person per year.

Each reporting period, the Company records the costs of its health insurance plan including paid claims, the change in the estimate of incurred but not reported (“IBNR”) claims, taxes, and administrative fees (collectively the “Plan Cost”). The Company regularly reviews its estimates of reported and unreported claims and provides for these losses through insurance reserves. These reserves are influenced by rising costs of health care and other costs, increases in claims, time lag in claim information, and levels of excess loss insurance coverage carried. As claims develop and additional information becomes available to us, adjustments to the related loss reserves may occur.

Income Taxes

Income Taxes

The Company accounts for income taxes under the asset and liability method, which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been included in the consolidated financial statements. Under this method, deferred tax assets and liabilities are determined based on the differences between the financial statements and tax basis of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to reverse. The effect of a change in tax rates on deferred tax assets and liabilities is recognized in income in the period that includes the enactment date.

The Company records net deferred tax assets to the extent it believes these assets will more likely than not be realized. In making such determination, the Company considers all available positive and negative evidence, including scheduled reversals of deferred tax liabilities, projected future taxable income, tax planning strategies and recent financial operations. In the event the Company was to determine that it would not be able to realize its deferred income tax assets in the future in excess of its net recorded amount, the Company would make an adjustment to the valuation allowance which would increase the provision for income taxes.

The Company's income tax returns are periodically audited by U.S. federal, state and local and foreign tax authorities. These audits include questions regarding our tax filing positions, including the timing and amount of deductions and the allocation of income among various tax jurisdictions. At any one time, multiple tax years are subject to audit by the various tax authorities. In evaluating the tax benefits associated with the Company's various tax filing positions, the Company records a tax benefit for uncertain tax positions using the highest cumulative tax benefit that is more likely than not to be realized. A number of years may elapse before a particular matter, for which a liability has been established, is audited and effectively settled. The Company adjusts its liability for unrecognized tax benefits in the period in which it determines the issue is effectively settled with the tax authorities, the statute of limitations expires for the relevant taxing authority to examine the tax position or when more information becomes available.

The Company recognizes interest and penalties related to unrecognized tax benefits within the interest expense line in the accompanying Consolidated Statement of Operations. Accrued interest and penalties are included within the Other Long-Term Liabilities line in the consolidated balance sheets as the amounts are not material for any of the balance sheet periods presented.

Concentration of Risk

Concentration of Credit Risk

In countries or industries where the Company is exposed to significant credit risk, sufficient collateral, including cash deposits and/or letters of credit, is required prior to the completion of a transaction.

The Company may make use of foreign exchange contracts to cover material transactions denominated in other than the functional currency of the relevant business unit. Credit risks are mitigated by the diversity of customers in the Company's customer base across many different geographic regions and performing creditworthiness analyses on such customers.

Valuation of Cost Method Investments

Valuation of Cost Method Investment

The Company evaluates its cost method investment for impairment on a quarterly basis. An impairment charge would be recorded whenever a decline in value of an investment below its carrying amount is determined to be other-than-temporary. In determining if a decline is other-than-temporary, factors such as the length of time and extent to which the fair value of the investment has been less than the carrying amount of the investment, the near-term and longer-term operating and financial prospects of the affiliate, and the intent and ability to hold the investment for a period of time sufficient to allow for any anticipated recovery are considered.

Intangible Assets

Intangible Assets

Intangible assets consist of acquired and internally developed patents and trademarks. Trademarks have an indefinite life and are not amortized. The Company capitalizes application fees, license fees, legal and other costs of successfully defending a patent from infringement. The remaining costs are expensed as incurred. Patents are amortized on a straight-line basis over the legal life of the underlying patents. The weighted average amortization period for patents is 20 years.

Impairment of Long-Lived Assets

Impairment of Long-Lived Assets

The Company routinely considers whether indicators of impairment are present for its long-lived assets, which consist of property and equipment, particularly its manufacturing equipment, and patents subject to amortization and depreciation. Factors considered include, but are not limited to, significant under-performance relative to historical or projected operating results; significant changes in the manner of use of long-lived assets or the strategy for the overall business; and significant negative industry or economic trends. If such indicators are present, the Company determines whether the sum of the estimated undiscounted cash flows attributable to the asset group in question is less than their carrying value. For purposes of impairment testing, long-lived assets are grouped at the component level, which for the Company is by regional locations, as this is the lowest level for which identifiable cash flows are largely independent of the cash flows of other assets and liabilities. If the sum of the undiscounted cash flows attributable to the asset group is less than the carrying value of the asset group, an impairment loss is recognized based on the excess of the carrying value of the asset group over its respective fair value. Fair value is determined by discounting estimated future cash flows, appraisals or other methods deemed appropriate. If the asset group determined to be impaired is to be held and used, the Company recognizes an impairment charge to the extent the present value of anticipated net cash flows attributable to the asset group is less than the assets' carrying value. The fair value of the assets then becomes the assets' new carrying value, which is amortized or depreciated over the remaining estimated useful life of the assets.

The Company concluded there were no long-lived asset impairment indicators in each of the fiscal years ended April 30, 2013, 2012 and 2011 following an analysis of operating results and consideration of other significant events or changes in the business environment. The Company will continue to monitor circumstances and events in future periods to determine whether asset impairment testing is warranted based on the existence of one or more of the above impairment indicators.

Financial Instruments

Financial Instruments

The carrying amount of cash and cash equivalents, restricted cash, receivables, accounts payable, accrued expenses, deferred revenue and customer deposits approximate fair value due to their relatively short maturities. Debt and notes payable reflect a market rate of interest, as such recorded amounts approximate fair value.

Cash and Cash Equivalents

Cash and Cash Equivalents

The Company considers highly liquid short-term investments with original maturities from the date of purchase of three months or less, if any, to be cash equivalents. The Company's cash consists of demand deposits in large financial institutions. At times, balances may exceed federally insured limits. Cash balances which are not available for general corporate purposes are classified as restricted cash and are primarily related to cash which collateralizes commercial letters of credit.

Derivative and Financial Instruments

Derivative Financial Instruments

The Company selectively utilizes forward exchange rate contracts to hedge its exposure to adverse exchange rate fluctuations on foreign currency denominated accounts receivable and accounts payable. These forward contracts have typically not been designated as hedges. At the end of each month, the Company marks the outstanding forward contracts to market and records an unrealized foreign exchange gain or loss for the mark-to-market valuation. The Company did not have any open forward exchange rate contracts for the respective fiscal years ended April 30, 2013 and 2012. The effect of derivative instruments on the Consolidated Statement of Operations is discussed further in Note 13 -Fair Value of Financial Instruments.

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Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Apr. 30, 2013	Apr. 30, 2012	Apr. 30, 2011
Cash Flows from Operating Activities:
Net Income	$ 5,037	$ 9,449	$ 766
Adjustments to Reconcile Net Income to Cash Provided by Operating Activities:
Depreciation and Amortization	5,919	6,208	6,302
Deferred Income Taxes	3,085	720	2,368
Provision for Slow Moving and Obsolete Inventory	224	477	884
Bad Debt Expense	338	531	434
Warranty Expense	5,880	4,235	2,695
Incentive Stock Compensation Expense	2,513	3,546	2,347
Unrealized Foreign Exchange Currency (Gains) Losses	448	587	(412)
Amortization and Write-off of Deferred Debt Issuance Costs	35	38	402
Indemnification Charge	135	(60)	242
Interest Accretion on Subordinated Notes	972	864	769
Other	235	119	261
Changes in Operating Assets and Liabilities:
Receivables	2,709	(2,071)	(10,051)
Inventories	(2,373)	(13,368)	(6,392)
Other Operating Assets	(1,001)	(1,246)	(2,485)
Accounts Payable	(4,891)	4,672	2,088
Accrued Payroll and Related Liabilities	(1,097)	609	694
Deferred Revenue and Customer Deposits	(6,358)	1,282	2,406
Other Operating Liabilities	(3,923)	(3,881)	(393)
Net Cash Provided by Operating Activities	7,887	12,711	2,925
Cash Flows From Investing Activities:
Expenditures for Property and Equipment	(5,820)	(3,947)	(2,675)
Expenditures for Intangible Assets	(786)	(654)	(855)
Proceeds from Sale of Property and Equipment	243	98	30
Restricted Cash	1,400	185	(959)
Net Cash Used in Investing Activities	(4,963)	(4,318)	(4,459)
Cash Flows from Financing Activities:
Borrowings Under Credit Facility	37,990	63,450	51,050
Repayments Under Credit Facility	(37,990)	(68,950)	(45,900)
Borrowings (Repayments) Under Other Financing Arrangements	28	5	(36)
Net Cash Provided by (Used In) Financing Activities	28	(5,495)	5,114
Effect of Changes in Exchange Rates	(429)	948	(851)
Net Change in Cash And Cash Equivalents	2,523	3,846	2,729
Cash and Cash Equivalents, Beginning of Year	12,942	9,096	6,367
Cash and Cash Equivalents, End of Year	15,465	12,942	9,096
Supplemental Disclosures of Cash Flow Information:
Interest	196	300	403
Income Taxes	2,381	1,252	950
Supplemental Disclosures of Noncash Investing Activities:
Accounts Payable Incurred to Acquire Property and Equipment and Intangible Assets	$ 781	$ 949	$ 135

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The Company and Summary of Significant Accounting Policies

12 Months Ended

Apr. 30, 2013

Organization, Consolidation and Presentation of Financial Statements [Abstract]

The Company and Summary of Significant Accounting Policies

The Company and Summary of Significant Accounting Policies

Reporting Policies

Operations and Segments

Flow International Corporation and its subsidiaries (hereinafter collectively referred to as “the Company”, “we”, or “our” unless the context requires otherwise) is a global technology-based manufacturing company committed to providing a world class customer experience. The Company offers technological leadership and exceptional waterjet performance to a wide-ranging customer base, benefiting many cutting and surface preparation applications, delivering profitable waterjet solutions, and dynamic business growth opportunities for our customers. Our ultrahigh-pressure water pumps generate pressures from 40,000 to over 94,000 pounds per square inch (psi) and power waterjet systems that are used to cut materials, remove coatings, and prepare surfaces for coating. Waterjet cutting and cleaning is a fast-growing alternative to traditional methods, such as lasers, saws, knives, shears, plasma, electrical discharge machining ("EDM"), routers, drills, soda blasting and abrasive blasting techniques, and has uses in many applications from food and paper products to steel and carbon fiber composites.

The Company reports its operating results to its Chief Executive Officer, who is the chief operating decision maker, based on market segments, which is consistent with management's long-term growth strategy. The Company has two reportable segments: Standard and Advanced. The Standard segment includes sales and cost of sales related to the Company's cutting and surface preparation systems using ultrahigh-pressure water pumps, as well as parts and services to sustain these installed systems. Systems included in this segment do not require significant custom configuration. The Advanced segment includes sales and cost of sales related to complex Advanced segment systems which require specific custom configuration and advanced features, including robotics, to match unique customer applications.

Financial information about the Company's segments is included in Note 14 -Business Segments and Geographic Information.

Principles of Consolidation

The consolidated financial statements include the accounts of Flow International Corporation and its wholly-owned subsidiaries. All intercompany transactions and accounts have been eliminated in consolidation. The Company accounts for its investments in non-marketable equity securities of less than 20% ownership that do not have a readily determinable fair value under the cost method of accounting.

Foreign Currency Translation

The local currency is the functional currency for all operations outside of the United States. Assets and liabilities are translated at the exchange rate in effect as of our balance sheet date. Revenues and expenses are translated at the average monthly exchange rates throughout the year. The effects of exchange rate fluctuations in translating assets and liabilities of international operations into U.S. dollars are accumulated and reflected as a cumulative translation adjustment in the accompanying Consolidated Statements of Comprehensive Income.

Use of Estimates

The Company prepares its consolidated financial statements in conformity with accounting principles generally accepted in the United States of America. The preparation of these consolidated financial statements requires management to make certain assumptions and estimates about future events, and apply judgments that affect the reported amount of assets and liabilities, revenues and expenses, and related disclosure of contingent assets and liabilities at the date of the consolidated financial statements. The Company bases its assumptions, estimates, and judgment on historical experience, current trends and other factors which management believes to be relevant and appropriate at the time the consolidated financial statements are prepared. Actual results could differ from management's estimates and assumptions.

Accounting for Certain Key Items

This section provides information about how the Company accounts for certain key items related to:

•operations;

•capital investments; and

•financing its business.

Policies related to Operations

Revenue Recognition

The Company sells ultrahigh-pressure waterjet systems. Sales of waterjet systems within the Standard segment are primarily related to the Company's cutting and surface preparation systems using ultrahigh-pressure water pumps and do not require significant custom configuration or modifications. Installation of these waterjet systems by the Company is not essential to the functionality of the waterjet systems, but the Company does provide installation as a separate service. Sales of waterjet systems within the Advanced segment are generally complex aerospace and automation systems, which require specific custom configuration and advanced features to match unique customer applications. Installation by the Company is essential to the functionality of waterjet systems sold within the Advanced segment.

The Company recognizes revenue, net of excise and sales taxes, when it is realized or realizable and earned. The Company considers these criteria met when persuasive evidence of an arrangement exists, delivery has occurred or services have been rendered, the sales price is fixed or determinable, and collectibility is reasonably assured.

Revenue for sales of ultrahigh-pressure waterjet pumps, consumables and services, and billing for freight charges, is recognized by the Company in accordance with Accounting Standard Codification ("ASC") 605, Revenue Recognition, (“ASC 605”), when the customer has assumed risk of loss of the goods sold and all performance obligations are complete, or over the period as services are rendered.

The Company recognizes revenue on its Standard segment waterjet systems which do not require significant modification or customization in accordance with ASC 605-25, Multiple-Element Arrangements. Standard segment waterjet systems contain two separate deliverables consisting of the system and installation services. The deliverables are treated as separate units of accounting. Standard segment waterjet systems also include a proprietary software component which functions together with the hardware to deliver the systems' essential functionality. Management performs an analysis to determine the relative selling price of each unit of accounting, and it has established vendor-specific objective evidence ("VSOE") for its system hardware and installation services based on standalone transactions.

The Company allocates consideration received to its deliverables at the inception of an arrangement based on their relative selling price, and the applicable revenue recognition criteria are applied to each of the separate units of accounting. In instances where the Company has not established VSOE for its Standard segment waterjet deliverables, it will use the estimated selling price ("ESP") in accordance with the selling price hierarchy to allocate arrangement consideration to each unit of accounting until such time that VSOE exists. Estimated selling prices would be determined by considering multiple factors, which may include existing and forecasted market conditions, internal costs, gross margin objectives, prior pricing practices, and geographic market strategies. The Company uses estimated selling prices in the absence of VSOE since it is unable to establish comparable third-party evidence of selling price for its deliverables based on limited availability of information and the level of customization and differentiation of similar products. Furthermore, the Company is unable to reliably determine what similar competitor product selling prices are on a standalone basis.

In general, sales of the Company's waterjet systems within its Standard segment are FOB shipping point or FOB destination, depending on geographical location, and the title passes to the customer based on the specific terms in each contract.

Deferred revenue is recorded for products or services that have not been provided but have been invoiced under contractual agreements or paid for by a customer, or when products or services have been provided but all the criteria for revenue recognition have not been met.

For complex aerospace and application systems designed and manufactured to buyers' specification, the Company recognizes revenue using the percentage of completion method in accordance with ASC 605-35, Construction-Type and Production-Type Contracts. Typical lead times can range from 12 to 24 months. Sales and profits on such contracts are recorded based on the ratio of total actual incurred costs to date to the total estimated costs for each contract (the “cost-to-cost” method). Management reviews these estimates as work progresses and the effect of any change in cost estimates is reflected in the calculation of the expected margin and the percent complete. If the contract is projected to generate a loss, the entire estimated loss is recognized in the period such loss first becomes known. Accounting for the profit on a contract requires (1) the total contract value, (2) the estimated total cost to complete, which is equal to the sum of the actual incurred costs to date on the contract and the estimated costs to complete the scope of work, and (3) the measurement of progress towards completion. The estimated profit or loss on a contract is equal to the difference between the contract value and the estimated total cost to completion. Adjustments to original cost estimates may be required as work progresses under a contract, as experience is gained and as more information is obtained, even though the scope of work required under the contract may not change, or if contract modifications occur. For contract modifications supported by a change in contract price, profit on such contract modifications are only recognized upon receipt of a signed contract amendment and only in the proportion of such contract's progress towards completion. For modifications not supported by a change in contract price, those additional costs are treated as contract costs and charged to expense in the proportion of such contract's progress towards completion.

A number of internal and external factors affect the Company's cost of sales estimates, including material costs, labor rates and efficiency variances and installation and testing requirements. While management believes that the Company's historical experience provides a sound basis for its estimates, changes in the customer's requirements, design or other changes in the specifications, or in the timing of delivery and installation may affect the timing of revenue related to, or the gross margin on, a system if they are substantially different from what was anticipated. The complexity of the estimation process and issues related to the assumptions, risks and uncertainties inherent with the application of the percentage of completion method affect the amounts reported in our financial statements.

Shipping revenues and expenses are recorded in revenue and cost of goods sold, respectively.

Cost of Sales

Cost of sales are generally recognized when products are shipped or services are delivered. In the case of waterjet systems, cost of sales for delivered systems are generally recognized in the period when the revenue for the waterjet system sale is recognized. Cost of sales includes direct and indirect costs associated with the manufacture, installation and service of the Company's systems and consumable parts sales, including estimated future warranty obligations. Direct costs include material and labor, while indirect costs include, but are not limited to, depreciation, inbound freight charges, purchasing and receiving costs, inspection costs, warehousing costs, internal transfer costs and other costs of the Company's distribution network.

Allowance for Doubtful Accounts

The allowance for doubtful accounts is the Company's best estimate of the amount of probable credit losses on existing receivables. The Company estimates the allowance based on the age of the related receivables, knowledge of the financial condition of its customers, review of historical receivables and reserve trends and other relevant information. Account balances are charged against the allowance when the Company determines that it is probable the receivable will not be recovered.

Inventories

Inventories are stated at the lower of cost or market. Costs included in inventories consist of materials, labor and manufacturing overhead, which are related to the purchase or production of inventories. The Company uses the first-in, first-out method to determine its cost of inventories.

The Company writes-down obsolete or excess parts and equipment inventory that is no longer used due to design changes to its products or lack of customer demand. The Company regularly monitors its inventory levels and, if it identifies an excess condition based on its usage, the Company records a corresponding inventory reserve which establishes a new cost basis for its inventory. Subsequent changes in facts or circumstances do not result in the reversal of previously recorded markdowns or an increase in that newly established cost basis. The amount of inventory write-down requires the use of management judgment regarding technological obsolescence and forecasted customer demand.

Warranty Liability

Products are warranted to be free from material defects for a period of at least one year from the date of installation. Warranty obligations are limited to the repair or replacement of products. Warranty liability is recorded at time of the sale. The Company's warranty accrual is reviewed quarterly by management for adequacy based upon recent shipments and historical warranty experience. Credit is issued upon receipt of the returned goods, or, if material, at the time of notification and approval.

Research and Engineering

The majority of research and engineering expenses are related to research and development efforts undertaken by the Company which are expensed as incurred. Research and engineering expenses were $11.4 million, $10.9 million and $10.1 million for the respective fiscal years ended April 30, 2013, 2012 and 2011. Research and engineering costs of $11.4 million for the fiscal year ended April 30, 2013 are net of a $0.8 million benefit from the reimbursement of certain research and engineering costs.

Stock-Based Compensation

Compensation cost for stock options or restricted stock units is measured at fair value on the dates they are granted or modified and recognized on a straight-line basis over the requisite service period, and adjusted for forfeitures expected to occur over the vesting period of the award. The fair value of restricted stock units is determined based on the number of shares granted and the quoted price of the Company's common stock. The Company estimates the grant-date fair value of stock options using the Black-Scholes option valuation model. Refer to Note 9 -Shareholders' Equity for further information related to the Company's stock compensation plans.

Health Benefits

The Company is self-insured for a portion of the cost of employee group health insurance, medical, dental, and vision in the United States. The Company maintains excess loss insurance that covers health care costs in excess of $125,000 per person per year.

Each reporting period, the Company records the costs of its health insurance plan including paid claims, the change in the estimate of incurred but not reported (“IBNR”) claims, taxes, and administrative fees (collectively the “Plan Cost”). The Company regularly reviews its estimates of reported and unreported claims and provides for these losses through insurance reserves. These reserves are influenced by rising costs of health care and other costs, increases in claims, time lag in claim information, and levels of excess loss insurance coverage carried. As claims develop and additional information becomes available to us, adjustments to the related loss reserves may occur.

The Company's annual Plan Costs were approximately $4.2 million, $3.6 million, and $3.5 million for the respective fiscal years ended April 30, 2013, 2012 and 2011. The liability, including IBNR, recorded in Accrued Payroll and Related Liabilities, was $0.4 million and $0.3 million as of April 30, 2013 and 2012, respectively.

Income Taxes

The Company accounts for income taxes under the asset and liability method, which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been included in the consolidated financial statements. Under this method, deferred tax assets and liabilities are determined based on the differences between the financial statements and tax basis of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to reverse. The effect of a change in tax rates on deferred tax assets and liabilities is recognized in income in the period that includes the enactment date.

The Company records net deferred tax assets to the extent it believes these assets will more likely than not be realized. In making such determination, the Company considers all available positive and negative evidence, including scheduled reversals of deferred tax liabilities, projected future taxable income, tax planning strategies and recent financial operations. In the event the Company was to determine that it would not be able to realize its deferred income tax assets in the future in excess of its net recorded amount, the Company would make an adjustment to the valuation allowance which would increase the provision for income taxes.

The Company's income tax returns are periodically audited by U.S. federal, state and local and foreign tax authorities. These audits include questions regarding our tax filing positions, including the timing and amount of deductions and the allocation of income among various tax jurisdictions. At any one time, multiple tax years are subject to audit by the various tax authorities. In evaluating the tax benefits associated with the Company's various tax filing positions, the Company records a tax benefit for uncertain tax positions using the highest cumulative tax benefit that is more likely than not to be realized. A number of years may elapse before a particular matter, for which a liability has been established, is audited and effectively settled. The Company adjusts its liability for unrecognized tax benefits in the period in which it determines the issue is effectively settled with the tax authorities, the statute of limitations expires for the relevant taxing authority to examine the tax position or when more information becomes available.

The Company recognizes interest and penalties related to unrecognized tax benefits within the interest expense line in the accompanying Consolidated Statement of Operations. Accrued interest and penalties are included within the Other Long-Term Liabilities line in the consolidated balance sheets as the amounts are not material for any of the balance sheet periods presented.

Concentration of Credit Risk

In countries or industries where the Company is exposed to significant credit risk, sufficient collateral, including cash deposits and/or letters of credit, is required prior to the completion of a transaction.

The Company may make use of foreign exchange contracts to cover material transactions denominated in other than the functional currency of the relevant business unit. Credit risks are mitigated by the diversity of customers in the Company's customer base across many different geographic regions and performing creditworthiness analyses on such customers.

No single customer or group of customers under common control accounted for 10% or more of consolidated sales during the respective fiscal years ended April 30, 2013, 2012 and 2011.

Policies related to Capital Investments

Valuation of Cost Method Investment

The Company evaluates its cost method investment for impairment on a quarterly basis. An impairment charge would be recorded whenever a decline in value of an investment below its carrying amount is determined to be other-than-temporary. In determining if a decline is other-than-temporary, factors such as the length of time and extent to which the fair value of the investment has been less than the carrying amount of the investment, the near-term and longer-term operating and financial prospects of the affiliate, and the intent and ability to hold the investment for a period of time sufficient to allow for any anticipated recovery are considered.

Intangible Assets

Intangible assets consist of acquired and internally developed patents and trademarks. Trademarks have an indefinite life and are not amortized. The Company capitalizes application fees, license fees, legal and other costs of successfully defending a patent from infringement. The remaining costs are expensed as incurred. Patents are amortized on a straight-line basis over the legal life of the underlying patents. The weighted average amortization period for patents is 20 years.

Impairment of Long-Lived Assets

The Company routinely considers whether indicators of impairment are present for its long-lived assets, which consist of property and equipment, particularly its manufacturing equipment, and patents subject to amortization and depreciation. Factors considered include, but are not limited to, significant under-performance relative to historical or projected operating results; significant changes in the manner of use of long-lived assets or the strategy for the overall business; and significant negative industry or economic trends. If such indicators are present, the Company determines whether the sum of the estimated undiscounted cash flows attributable to the asset group in question is less than their carrying value. For purposes of impairment testing, long-lived assets are grouped at the component level, which for the Company is by regional locations, as this is the lowest level for which identifiable cash flows are largely independent of the cash flows of other assets and liabilities. If the sum of the undiscounted cash flows attributable to the asset group is less than the carrying value of the asset group, an impairment loss is recognized based on the excess of the carrying value of the asset group over its respective fair value. Fair value is determined by discounting estimated future cash flows, appraisals or other methods deemed appropriate. If the asset group determined to be impaired is to be held and used, the Company recognizes an impairment charge to the extent the present value of anticipated net cash flows attributable to the asset group is less than the assets' carrying value. The fair value of the assets then becomes the assets' new carrying value, which is amortized or depreciated over the remaining estimated useful life of the assets.

The Company concluded there were no long-lived asset impairment indicators in each of the fiscal years ended April 30, 2013, 2012 and 2011 following an analysis of operating results and consideration of other significant events or changes in the business environment. The Company will continue to monitor circumstances and events in future periods to determine whether asset impairment testing is warranted based on the existence of one or more of the above impairment indicators.

Policies related to Financing

Financial Instruments

The carrying amount of cash and cash equivalents, restricted cash, receivables, accounts payable, accrued expenses, deferred revenue and customer deposits approximate fair value due to their relatively short maturities. Debt and notes payable reflect a market rate of interest, as such recorded amounts approximate fair value.

Cash and Cash Equivalents

The Company considers highly liquid short-term investments with original maturities from the date of purchase of three months or less, if any, to be cash equivalents. The Company's cash consists of demand deposits in large financial institutions. At times, balances may exceed federally insured limits. Cash balances which are not available for general corporate purposes are classified as restricted cash and are primarily related to cash which collateralizes commercial letters of credit.

Derivative Financial Instruments

The Company selectively utilizes forward exchange rate contracts to hedge its exposure to adverse exchange rate fluctuations on foreign currency denominated accounts receivable and accounts payable. These forward contracts have typically not been designated as hedges. At the end of each month, the Company marks the outstanding forward contracts to market and records an unrealized foreign exchange gain or loss for the mark-to-market valuation. The Company did not have any open forward exchange rate contracts for the respective fiscal years ended April 30, 2013 and 2012. The effect of derivative instruments on the Consolidated Statement of Operations is discussed further in Note 13 -Fair Value of Financial Instruments.

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Property and Equipment

12 Months Ended

Apr. 30, 2013

Property, Plant and Equipment [Abstract]

Property and Equipment

Property and Equipment

Property and equipment are stated at cost. Additions, leasehold improvements and major replacements are capitalized. When assets are sold, retired or otherwise disposed of, the cost and accumulated depreciation are removed from the accounts and any resulting gain or loss is reflected in the statement of operations within operating income. Depreciation for financial reporting purposes is provided using the straight-line method over the estimated useful lives of the assets. Leasehold improvements are amortized over the shorter of the related lease term, or the useful life of the asset. Expenditures for maintenance and repairs are charged to expense as incurred.

The carrying value of the Company's Property and Equipment and estimated service lives were as follows:

		April 30,
	Range of Lives	2013			2012
Land	N/A	$	460		$	460
Buildings and Leasehold Improvements	10-30	5,471			5,189
Machinery and Equipment	3-10	28,381			25,773
Furniture and Fixtures	3-10	2,058			2,518
Computer Equipment and Software	3-5	14,930			12,079
Construction in Progress		1,557			2,721
		52,857			48,740
Less: Accumulated Depreciation and Amortization		(34,963		)	(31,252		)
Property and Equipment, net		$	17,894		$	17,488

Depreciation expense was $5.4 million, $5.7 million, and $5.9 million for the respective fiscal years ended April 30, 2013, 2012 and 2011. Depreciation is calculated on the straight-line method over the estimated useful lives of the assets.

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Receivables, Net

12 Months Ended

Apr. 30, 2013

Receivables [Abstract]

Receivables, Net

Receivables, Net

Net Receivables consisted of the following:

	April 30,
	2013			2012
Trade Accounts Receivable	$	31,893		$	36,802
Unbilled Revenues	11,754			11,152
	43,647			47,954
Less: Allowance for Doubtful Accounts	(906		)	(1,124		)
Receivables, net	$	42,741		$	46,830

The Company's unbilled revenues do not contain any amounts which are expected to be collected after one year.

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Property and Equipment (Details) (USD $) In Thousands, unless otherwise specified	Apr. 30, 2013	Apr. 30, 2012
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 52,857	$ 48,740
Less: Accumulated Depreciation and Amortization	(34,963)	(31,252)
Property and Equipment, net	17,894	17,488
Land [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	460	460
Buildings and Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	5,471	5,189
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	28,381	25,773
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	2,058	2,518
Computer Equipment and Software [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	14,930	12,079
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 1,557	$ 2,721

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Property and Equipment (Tables)

12 Months Ended

Apr. 30, 2013

Property, Plant and Equipment [Abstract]

Schedule of Property and Equipment

The carrying value of the Company's Property and Equipment and estimated service lives were as follows:

		April 30,
	Range of Lives	2013			2012
Land	N/A	$	460		$	460
Buildings and Leasehold Improvements	10-30	5,471			5,189
Machinery and Equipment	3-10	28,381			25,773
Furniture and Fixtures	3-10	2,058			2,518
Computer Equipment and Software	3-5	14,930			12,079
Construction in Progress		1,557			2,721
		52,857			48,740
Less: Accumulated Depreciation and Amortization		(34,963		)	(31,252		)
Property and Equipment, net		$	17,894		$	17,488

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Shareholders' Equity (Tables)

12 Months Ended

Apr. 30, 2013

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Share-based Compensation, Stock Options, Activity

The following table summarizes stock option activities for the fiscal year ended April 30, 2013:

	Number of Options		Weighted-Average Exercise Price		Aggregate Intrinsic Value		Weighted-Average Remaining Contractual Term (Years)
Outstanding at April 30, 2012	388,168		$	10.47	$	—	5.41
Granted	—		—
Exercised	—		—
Expired or forfeited	(13,140	)	$	5.71
Outstanding at April 30, 2013	375,028		$	10.64	—		4.59
Exercisable as of April 30, 2013	375,028		$	10.64	—		4.59
Vested and expected to vest as of April 30, 2013	375,028		$	10.64	—		4.59

	Fiscal Year Ended April 30,
	2013		2012		2011
Total intrinsic value of options exercised	$	—	$	—	$	—
Total fair value of options vested	—		345		345
Cash received from exercise of share options	—		—		—
Tax benefit realized from stock options exercised	—		—		—

Schedule of Share-based Compensation, Restricted Stock Units Award Activity

The following table summarizes the service-based stock award activities for employees for the fiscal years ended April 30, 2013, 2012 and 2011:

	Number of Shares		Weighted- Average Grant-date Fair Value
Nonvested at April 30, 2010	1,237,959		$	3.57
Granted	838,666		2.29
Vested	(348,240	)	3.81
Forfeited	(93,607	)	2.86
Nonvested at April 30, 2011	1,634,778		2.90
Granted	846,508		3.44
Vested	(653,447	)	2.61
Forfeited	(48,574	)	3.26
Nonvested at April 30, 2012	1,779,265		3.25
Granted	811,461		2.93
Vested	(641,709	)	3.47
Forfeited	(220,013	)	3.18
Nonvested at April 30, 2013	1,729,004		$	3.03

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Selected Quarterly Financial Information (unaudited) (Tables)

12 Months Ended

Apr. 30, 2013

Quarterly Financial Information Disclosure [Abstract]

Schedule of Quarterly Financial Information

Summarized unaudited quarterly financial data was as follow:

	Fiscal Year Ended April 30, 2013
	First		Second		Third		Fourth			Total
Sales	$	66,235	$	67,038	$	67,658	$	58,407		$	259,338
Gross Margin	24,793		25,420		26,653		21,056			97,922
Income (Loss) From Continuing Operations	2,207		2,175		2,695		(1,905		)	5,172
Net Income (Loss)	2,221		2,110		2,611		(1,905		)	5,037
Basic Income (Loss) Per Share:
Income (Loss) From Continuing Operations	$	0.05	$	0.04	$	0.06	$	(0.04	)	$	0.11
Net Income (Loss)	$	0.05	$	0.04	$	0.05	$	(0.04	)	$	0.10
Diluted Income (Loss) Per Share:
Income (Loss) From Continuing Operations	$	0.05	$	0.04	$	0.05	$	(0.04	)	$	0.11
Net Income (Loss)	$	0.05	$	0.04	$	0.05	$	(0.04	)	$	0.10

	Fiscal Year Ended April 30, 2012
	First		Second		Third		Fourth		Total
Sales	$	60,030	$	64,533	$	65,808	$	63,397	$	253,768
Gross Margin	23,120		25,316		26,071		24,861		99,368
Income From Continuing Operations	654		2,731		3,259		2,745		9,389
Net Income	711		2,779		3,316		2,643		9,449
Basic Income Per Share:
Income From Continuing Operations	$	0.01	$	0.06	$	0.07	$	0.06	$	0.20
Net Income	$	0.01	$	0.06	$	0.07	$	0.06	$	0.20
Diluted Income Per Share:
Income From Continuing Operations	$	0.01	$	0.06	$	0.07	$	0.06	$	0.20
Net Income	$	0.01	$	0.06	$	0.07	$	0.06	$	0.20

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Schedule II - Valuation and Qualifying Accounts (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Apr. 30, 2013		Apr. 30, 2012		Apr. 30, 2011
Valuation Allowance of Deferred Tax Assets [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	$ 7,902		$ 9,732		$ 10,083
Net Change	(267)		(1,830)		(351)
Balance at End of Period	7,635		7,902		9,732
Allowance for Doubtful Accounts [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	1,124		1,304		1,152
Charged to Costs and Expenses	338		531		434
Other	0		(24)		25
Deductions	(556)	[1]	(687)	[1]	(307)	[1]
Balance at End of Period	$ 906		$ 1,124		$ 1,304

[1] Write-offs and recoveries of uncollectible accounts

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Basic and Diluted Income (Loss) Per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Apr. 30, 2013	Jan. 31, 2013	Oct. 31, 2012	Jul. 31, 2012	Apr. 30, 2012	Jan. 31, 2012	Oct. 31, 2011	Jul. 31, 2011	Apr. 30, 2013	Apr. 30, 2012	Apr. 30, 2011
Earnings Per Share [Abstract]
Income (Loss) from Continuing Operations, Including Portion Attributable to Noncontrolling Interest	$ (1,905)	$ 2,695	$ 2,175	$ 2,207	$ 2,745	$ 3,259	$ 2,731	$ 654	$ 5,172	$ 9,389	$ 1,008
Weighted average shares used in computing basic income per share									48,312	47,766	47,216
Dilutive potential common shares from employee stock options and restricted stock units									748	0	12
Weighted average shares used in computing diluted income per share									49,060	47,766	47,228
Basic and diluted income (loss) from continuing operations per share (in dollars per share)									$ 0.11	$ 0.20	$ 0.02

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Pension and Other Post Retirement Benefits Pension and Other Post Retirement Benefits (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Apr. 30, 2013	Apr. 30, 2012
Changes in the Projected Benefit Obligation
Projected Benefit Obligation - Beginning Balance	$ 1,361	$ 1,327
Service Cost	15	18
Interest Cost	25	26
Actuarial Loss	54	8
Benefits Paid	0	0
Foreign Exchange Adjustment	(10)	(18)
Projected Benefit Obligation - Ending Balance	1,445	1,361
Changes in the Value of Plan Assets
Fair Value of Plan Assets - Beginning Balance	1,013	992
Actual Return on Plan Assets	13	9
Employer Contribution	27	26
Benefits Paid	0	0
Foreign Exchange Adjustment	(8)	(14)
Fair Value of Plan Assets - Ending Balance	$ 1,045	$ 1,013
Discount Rate	1.75%	1.90%
Expected Rate of Return on Assets	1.75%	1.90%
Salary Increase Rate	3.00%	3.00%

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Intangible Assets - Additional Information (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Apr. 30, 2013	Apr. 30, 2012	Apr. 30, 2011
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization of Intangible Assets	$ 0.6	$ 0.5	$ 0.4
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2014	0.6
2015	0.6
2016	0.6
2017	0.6
2018	$ 0.6

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Consolidated Balance Sheets (Parenthetical) (USD $)	Apr. 30, 2013	Apr. 30, 2012
Statement of Financial Position [Abstract]
Preferred stock, stated percentage rate	8.00%	8.00%
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	84,000,000	84,000,000
Common stock, shares issued	48,452,000	47,891,000
Common stock, shares outstanding	48,452,000	47,891,000

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Commitments and Contingencies

12 Months Ended

Apr. 30, 2013

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Commitments and Contingencies

Lease Commitments

The Company rents certain facilities and equipment treated as operating leases for financial reporting purposes. The majority of leases currently in effect are renewable for periods of two to five years. Rent expense under these leases was approximately $3.1 million, $3.1 million and $3.2 million for the respective fiscal years ended April 30, 2013, 2012 and 2011.

Future minimum rents payable under operating leases for the fiscal years ending April 30 are as follows:

2014	$	3,132
2015	2,817
2016	2,527
2017	1,625
2018	1,547
2019 and thereafter	2,588
	$	14,236

Warranty Obligations

The Company’s estimated obligations for warranty, which are included as part of Costs of Sales in the Consolidated Statements of Operations, are accrued concurrently with the revenue recognized. The Company makes provisions for its warranty obligations based upon historical costs incurred for such obligations adjusted, as necessary, for current conditions and factors. Due to the significant uncertainties and judgments involved in estimating the Company’s warranty obligations, including rates of warranty claims, changing product designs and specifications, and new product releases, the ultimate amount incurred for warranty costs could change in the near term from the current estimate. The Company believes that its warranty accrual as of April 30, 2013, which is included in the Other Accrued Liabilities line item in the Consolidated Balance Sheets, is sufficient to cover expected warranty costs.

The following table presents the activity for the Company’s warranty obligations:

	April 30,
	2013			2012			2011
Beginning Balance	$	3,013		$	2,804		$	2,533
Increase in warranty liability on fiscal year sales	5,880			4,235			2,695
Reduction in warranty liability for claims in fiscal year	(5,169		)	(4,026		)	(2,424		)
Ending Balance	$	3,724		$	3,013		$	2,804

Product Liability

Currently there are outstanding product liability claims arising out of the sale of current and former products of the Company. To minimize the financial impact of product liability claims, the Company purchases product liability insurance in amounts and under terms considered acceptable to management.

Management periodically evaluates the merit of all claims, including product liability claims, as well as considering unasserted claims. Recoveries, if any, may be realized from indemnitors, codefendants, insurers or insurance guaranty funds. Management believes its insurance coverage is adequate to satisfy any liabilities that are incurred.

Legal Proceedings

At any time, the Company may be involved in legal proceedings arising in the normal course of conducting business. The Company's policy is to routinely assess the likelihood of any adverse judgments or outcomes related to legal matters, as well as ranges of probable losses. A determination of the amount of the reserves required, if any, for these contingencies is based on historical experience and an analysis of each known issue. The Company records reserves related to legal matters for which it is probable that a loss has been incurred and the range of such loss can be estimated. With respect to other matters, management has concluded that a loss is only reasonably possible or remote, or a range of loss cannot be estimated, and, therefore, no liability is recorded. Management discloses the facts regarding material matters assessed as reasonably possible, and the exposure if determinable. Costs incurred defending claims are expensed as incurred. Other than those described below, the Company does not believe that the resolution of any such matters will have a material adverse effect on its consolidated financial position, results of operations or cash flows.

In litigation arising out of a June 2002 incident at a Crucible Metals (“Crucible”) facility, the Company's excess insurance carrier is contesting its obligation to provide coverage for property damage. The suits over insurance coverage, Flow Autoclave Systems, Inc., Flow Pressure Systems, ABB Pressure Systems, Avure Technologies AB and Avure Technologies, Inc. v. Lumbermens Mutual Casualty and Kemper Insurance Co., and Lumbermens Mutual Casualty Company v. Flow International Corporation, Flow Autoclave Systems, Inc., Flow Pressure Systems, ABB Pressure Systems, Avure Technologies AB and Avure Technologies, Inc., were originally filed in Supreme Court of the State of New York, County of Onondaga, Index No. 2005-2126 in 2005, and sought a declaratory judgment of the rights of the parties under the insurance policy issued by the carrier. The carrier, Lumbermens Mutual Casualty Company, has settled the claims relating to this incident for a total of approximately $3.4 million and is now seeking a declaratory judgment that it was not obligated to pay the claim. The suit, Lumbermens Mutual Casualty Company v. Flow International Corporation et al, was filed in United States District Court for the Northern District of New York on August 13, 2008, case number 08-CV-865. The trial was postponed several times. The judge has ruled on evidentiary matters and has set trial to start on August 19, 2013. The Company is vigorously contesting the carrier's claim; however, the ultimate outcome or likelihood of this specific claim cannot be determined at this time and an unfavorable outcome ranging from $0 to $3.4 million is reasonably possible. The result of any outcome would be reported as discontinued operations in the Company's Consolidated Statements of Operations.

Other Claims or Assessments

In fiscal year 2009, the Company was notified by the purchaser of its Avure business (reported as a discontinued operation for the fiscal year ended April 30, 2006), that the Swedish Tax Authority was conducting an audit which included periods when the Company had owned the business. In the sale agreements, the Company made commitments to indemnify the purchaser for certain claims, including tax matters relating to the periods when it owned the business. The Swedish tax authority concluded its audit and issued a final report in November 2009 initially asserting that Avure owes 19.5 million Swedish Krona, approximately $2.8 million at the initial date of assessment, in additional taxes, penalties and fines. In April 2010, the Company, on behalf of Avure, filed an appeal to contest the Swedish tax authority's assertion. In August 2012, the Company received notice that the Swedish district court issued a ruling in favor of the Swedish tax authority. The Company continues to contest the findings and filed an appeal with the Administrative Court of Stockholm in September 2012. A charge was recorded in the first quarter of fiscal year 2010 related to the periods when the Company owned Avure. This charge was accounted for as an adjustment to the loss on the disposal of the Avure business and was reported as a charge to discontinued operations in the Company's Consolidated Statements of Operations. As of April 30, 2013, the Company has accrued $1.3 million related to the Avure matter. The balance of the accrued liability will fluctuate period over period with changes in foreign currency rates until such time as the matter is ultimately resolved.

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Consolidated Statements of Comprehensive Income (Loss) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Apr. 30, 2013	Apr. 30, 2012	Apr. 30, 2011
Statement of Other Comprehensive Income [Abstract]
Net Income	$ 5,037	$ 9,449	$ 766
Other Comprehensive Income (Loss):
Adjustment to Minimum Pension Liability, net of tax	(46)	(13)	(77)
Cumulative Translation Adjustment, net of tax	(1,170)	(988)	1,001
Total Comprehensive Income	$ 3,821	$ 8,448	$ 1,690

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Income Taxes - Income Before Taxes (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Apr. 30, 2013	Apr. 30, 2012	Apr. 30, 2011
Income (Loss) from Continuing Operations Before Provision (Benefit) for Income Taxes:
United States	$ 7,085	$ 1,762	$ (2,419)
Foreign	3,216	10,903	6,322
Income Before Taxes	$ 10,301	$ 12,665	$ 3,903

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Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Apr. 30, 2013	Apr. 30, 2012
Current Assets:
Cash and Cash Equivalents	$ 15,465	$ 12,942
Restricted Cash	0	1,435
Receivables, net	42,741	46,830
Inventories	41,059	40,069
Other Current Assets	17,194	14,269
Total Current Assets	116,459	115,545
Property and Equipment, net	17,894	17,488
Intangible Assets, net	5,120	4,936
Deferred Income Taxes, net	16,515	23,304
Other Long-Term Assets	6,105	5,793
Total Assets	162,093	167,066
Current Liabilities:
Subordinated Notes	10,559	0
Accounts Payable	17,166	22,577
Accrued Payroll and Related Liabilities	7,078	7,774
Taxes Payable and Other Accrued Taxes	3,908	3,735
Deferred Revenue and Customer Deposits	7,340	13,910
Other Accrued Liabilities	11,213	11,104
Total Current Liabilities	57,264	59,100
Deferred Income Taxes	6,313	5,777
Subordinated Notes	0	9,587
Other Long-Term Liabilities	1,782	1,554
Total Liabilities	65,359	76,018
Commitments and Contingencies
Shareholders’ Equity:
Series A 8% Convertible Preferred Stock, $.01 par value, 1,000 shares authorized; no shares issued and outstanding	0	0
Common Stock, $.01 par value, 84,000 shares authorized; 48,452 and 47,891 shares issued and outstanding	484	474
Capital in Excess of Par	166,737	164,882
Accumulated Deficit	(64,635)	(69,672)
Accumulated Other Comprehensive Loss:
Defined Benefit Plan Obligation, net of income tax	(127)	(81)
Cumulative Translation Adjustment, net of income tax	(5,725)	(4,555)
Total Shareholders’ Equity	96,734	91,048
Total Liabilities and Shareholders’ Equity	$ 162,093	$ 167,066

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Pension and Other Post Retirement Benefits - Additional Information (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Apr. 30, 2013	Apr. 30, 2012	Apr. 30, 2011
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plan expense	$ 0.9	$ 0.8	$ 0.4
Net periodic benefit cost (less than $.1 million)	0.1	0.1	0.1
Defined benefit plan, accumulated benefit obligation	1.1	1.0
Unrecognized net transition obligation (less than $.1 million)	0.1	0.1
Unrecognized loss	$ 0.1	$ 0.1
Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, month's salary pension benefit	2 months
Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, month's salary pension benefit	45 months
25 Years of Service [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, requisite service period	25 years
Age 55 With 15 Years of Service [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, requisite service period	15 years
Defined benefit plan, age eligible to withdrawal pension	55 years
Age 60 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, age eligible to withdrawal pension	60 years

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Intangible Assets (Tables)

12 Months Ended

Apr. 30, 2013

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Finite-Lived Intangible Assets

The components of the Company's finite lived intangible assets consisted of the following:

	April 30,
	2013			2012
Patents	$	7,110		$	6,531
Less: Accumulated Amortization	(3,189		)	(2,729		)
Patents, net	$	3,921		$	3,802

Schedule of Indefinite-Lived Intangible Assets

Intangible assets with indefinite lives consisted of the following:

	April 30,
	2013		2012
Trademarks	$	1,199	$	1,134

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Subsequent Events

12 Months Ended

Apr. 30, 2013

Subsequent Events [Abstract]

Subsequent Events

Subsequent Events

On May 31, 2013, the Company amended its existing Credit Facility Agreement, set to mature on March 2, 2014, and entered into a new four-year Credit Facility Agreement which will mature May 31, 2017. The Company also increased its total commitment under the new Credit Facility to $40.0 million to provide more flexibility given the longer term of the agreement and allow for changes in working capital needs in the future. The Company's financial covenant ratios under the new Credit Facility remain unchanged, allowing the company to maintain a maximum leverage ratio of 2.75x and a minimum Fixed Charge Coverage Ratio of 1.75x. Interest charges continue to be based on the bank's prime rate or LIBOR rate plus a percentage spread between 0.00% and 2.25% and based on the Company's current leverage ratio. All the Company's domestic assets and certain interests in some foreign subsidiaries will continue to be pledged as collateral under the amended four-year Credit Facility.

In addition, on June 7, 2013, the Company announced that its Board of Directors has initiated a process to evaluate strategic alternatives to enhance shareholder value, including, among other things, the potential sale of the Company or other transaction. The Board of Directors has retained a financial advisor to assist it in evaluating these alternatives.

The Company noted that there can be no assurance that the exploration of strategic alternatives will result in any transaction. The Company has not set a timetable for completion of the review process, and it does not intend to comment further regarding the review process unless and until a final decision is made or further disclosure is required by law.

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Intangible Assets - Indefinite Lived Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	Apr. 30, 2013	Apr. 30, 2012
Goodwill and Intangible Assets Disclosure [Abstract]
Trademarks	$ 1,199	$ 1,134

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Shareholders' Equity - Additional Information (Details) (USD $)	Apr. 30, 2013	Apr. 30, 2012
Capital Stock:
Common stock, shares authorized	84,000,000	84,000,000
Common stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, par value	$ 0.01	$ 0.01
Common stock, shares outstanding	48,452,000	47,891,000
Preferred stock, shares outstanding	0	0
Common Share Rights Purchase Plan [Member]
Capital Stock:
Common stock, par value	$ 0.01
Common Share Rights Purchase Plan:
Dividend, number of rights per outstanding share of common stock	1
Number of shares available to purchase per right	1
Exercise price per share of warrants	$ 18.00
Percentage acquisition of company's common stock from tender offer causing warrants or rights to become exercisable	15.00%
The 2005 Plan [Member]
Share-based Compensation:
Number of share authorized	5,000,000
Number of shares available for grant	300,000.0

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Fair Value of Financial Instruments Fair Value of Financial Instruments (Details) (USD $)			12 Months Ended
	Apr. 30, 2013	Apr. 30, 2012	Apr. 30, 2013 Subordinated Debt [Member] 2% Percent Suboridnated Notes Due August 2013 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cost Method Investments	$ 3,700,000
Fair Value Inputs, Discount Rate			10.00%
Long-Term Debt, Current Portion	10,559,000	0	10,600,000
Long-Term Debt			$ 10,800,000

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Receivables, Net (Details) (USD $) In Thousands, unless otherwise specified	Apr. 30, 2013	Apr. 30, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables, gross	$ 43,647	$ 47,954
Less: Allowance for Doubtful Accounts	(906)	(1,124)
Receivables, net	42,741	46,830
Unbilled Revenues [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables, gross	11,754	11,152
Trade Accounts Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables, gross	$ 31,893	$ 36,802

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Income Taxes (Tables)

12 Months Ended

Apr. 30, 2013

Income Tax Disclosure [Abstract]

Schedule of Income before Income Tax, Domestic and Foreign

The components of the Company's consolidated income (loss) before income taxes consisted of the following:

	Fiscal Year Ended April 30,
	2013		2012		2011
Income (Loss) from Continuing Operations Before Provision (Benefit) for Income Taxes:
United States	$	7,085	$	1,762	$	(2,419	)
Foreign	3,216		10,903		6,322
Total	$	10,301	$	12,665	$	3,903

Schedule of Components of Income Tax Expense (Benefit)

The provision (benefit) for income taxes is comprised of:

	Fiscal Year Ended April 30,
	2013			2012			2011
Federal	$	(298	)	$	(189	)	$	(993	)
State	82			112			30
Foreign	2,260			2,049			2,102
Current Tax Expense (Benefit) (after NOL Benefit of $3,307, $2,040, and $1,228)	2,044			1,972			1,139
Federal	2,674			1,652			549
State	244			(49		)	252
Foreign	167			(299		)	955
Deferred Tax Expense (Benefit) (Net of Change in Valuation Allowance of $(268), $(1,830), and $(351))	3,085			1,304			1,756
Provision (Benefit) for Income Taxes	$	5,129		$	3,276		$	2,895

Schedule of Effective Income Tax Rate Reconciliation

The reconciliation between the Company's effective tax rate on income from continuing operations and the statutory tax rate is as follows:

	Fiscal Year Ended April 30,
	2013		2012		2011
Income tax provision (benefit) at federal statutory rate	34.0	%	34.0	%	34.0	%
State and local taxes net of federal tax benefit	2.1		0.3		4.7
Foreign tax rate differential	(0.8	)	(2.9	)	(0.3	)
Change in valuation allowance	(1.7	)	(3.9	)	5.1
Non deductible/nontaxable items	8.1		7.2		17.4
Foreign earnings not previously subject to U. S. tax	(0.4	)	2.2		—
Foreign withholding taxes	2.2		1.0		1.4
Stock based compensation	0.9		0.8		4.5
Tax credits	—		—		(0.8	)
Prior year reconciled amounts	6.0		(3.2	)	7.0
Examination settlements	—		(10.8	)	—
Other, net	(0.6	)	1.2		1.2
Income tax provision	49.8	%	25.9	%	74.2	%

Schedule of Deferred Tax Assets and Liabilities

Components of the net deferred tax assets (liabilities) consisted of the following:\

	April 30, 2013			April 30, 2012
Current deferred tax assets (liabilities):
Deposits on future sales	$	(980	)	$	(1,445	)
Net operating loss carryforwards	1,559			765
Stock-based compensation	655			758
Accrued Settlement	3,332			—
Other current assets	3,324			4,385
Other current liabilities	(160		)	(1,083		)
Current Deferred Tax Assets	7,730			3,380
Valuation allowance	(326		)	(78		)
Total Current Deferred Tax Assets	$	7,404		$	3,302

	April 30, 2013			April 30, 2012
Long-term deferred tax assets (liabilities):
Net operating loss carryforwards	$	16,528		$	21,373
Accrued settlement	—			3,049
Capital loss carryforwards	469			456
Goodwill	850			969
Fixed assets	(24		)	336
Stock-based compensation	1,396			1,097
Intercompany accounts receivable allowances	204			205
Unrealized foreign exchange loss	(2,233		)	(2,350		)
Intercompany loan	(842		)	—
Foreign withholding tax	(614		)	—
Other long-term assets	2,907			1,748
Other long-term liabilities	(1,121		)	(1,532		)
Long-term deferred tax assets	17,520			25,351
Valuation allowance	(7,309		)	(7,824		)
Long-term deferred tax assets, net	10,211			17,527
Net Deferred Tax Assets	$	17,615		$	20,829

Schedule of Unrecognized Tax Benefits Roll Forward

The following is a tabular reconciliation of the total amounts of the Company's unrecognized tax benefits for the years ended April 30, 2013, 2012 and 2011:

Balance as of April 30, 2010	$	9,247
Gross increases - tax positions in current period	102
Gross increases - tax positions in prior periods	360
Gross increases in tax positions due to currency fluctuations	87
Balance as of April 30, 2011	9,796
Gross increases - tax positions in current period	114
Gross increases - tax positions in prior periods	33
Gross decreases in tax positions due to currency fluctuations	(47		)
Gross decreases - tax positions in prior periods	(3,130		)
Balance as of April 30, 2012	6,766
Gross increases - tax positions in current period	140
Gross increases - tax positions in prior periods	415
Gross decreases in tax positions due to currency fluctuations	(9		)
Gross decreases - tax positions in prior periods	(54		)
Balance as of April 30, 2013	$	7,258

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Business Segments and Geographic Information (Tables)

12 Months Ended

Apr. 30, 2013

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment

The following table sets forth the revenue and gross margin of operations by reportable segment:

	Fiscal Year Ended April 30,
	2013			2012			2011
Standard Segment:
Sales	$	239,413		$	230,272		$	187,887
Gross Margin	94,052			93,843			78,321
	39		%	41		%	42		%
Advanced Segment:
Sales	19,925			23,496			28,637
Gross Margin	3,870			5,525			6,140
	19		%	24		%	21		%
Total:
Sales	259,338			253,768			216,524
Gross Margin	97,922			99,368			84,461
	38		%	39		%	39		%

Revenue from External Customers by Products and Services

The table below represents the Company's sales by category:

	Fiscal Year Ended April 30,
	2013		2012		2011
Standard System Sales	$	153,202	$	150,456	$	117,721
Advanced System Sales	19,925		23,358		28,431
Consumable Parts Sales	86,211		79,954		70,372
	$	259,338	$	253,768	$	216,524

Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas

The table below presents the Company's sales to unaffiliated customers and long-lived assets by geographical region:

	Fiscal Year Ended April 30,
Sales by Geographic Region	2013		2012		2011
United States (i)	$	139,829	$	130,342	$	118,882
Europe, Middle East, Africa	50,704		51,429		42,929
Asia Pacific	40,344		41,119		32,011
Latin America	26,061		28,365		20,373
Other Foreign	2,400		2,513		2,329
Total	$	259,338	$	253,768	$	216,524
			April 30,
Long-Lived Assets			2013		2012
United States			$	37,828	$	43,194
Europe, Middle East, Africa			5,572		5,858
Asia Pacific			1,470		1,562
Latin America			764		907
Other Foreign			—		—
Total			$	45,634	$	51,521

i. U.S. sales to unaffiliated customers in foreign countries were $30.7 million, $27.2 million, and $25.5 million in fiscal years 2013, 2012, and 2011, respectively.

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Debt

12 Months Ended

Apr. 30, 2013

Debt Disclosure [Abstract]

Notes Payable

Debt

Subordinated Notes

The Company issued subordinated notes in fiscal year 2010 with a principal value of $10.0 million and a 2% annual interest rate. The notes were originally recorded at a discount as the stated interest rate was below the Company's incremental borrowing rate, and the discount is being amortized to interest expense through maturity of the notes. The principal balance and accrued interest on the notes will aggregate to $10.8 million when due in August 2013. As of April 30, 2013, the Company's subordinated notes and related interest of $10.6 million are classified as current.

Credit Facility

The Company has a $25.0 million Credit Facility that matures March 2, 2014. Under the terms of the Credit Facility in effect as of April 30, 2013, the Company was allowed to maintain a maximum consolidated leverage ratio of 2.75x, and a minimum fixed charge coverage ratio of 1.75x. The terms of the Credit Facility define the leverage ratio as the ratio of consolidated indebtedness, excluding its outstanding subordinated notes, to consolidated adjusted Earnings Before Interest, Taxes, Depreciation and Amortization ("Adjusted EBITDA") for the most recent four fiscal quarters. The Fixed Charge Coverage Ratio is defined as the ratio of Adjusted EBITDA, less income taxes and maintenance capital expenditures, during the most recent four fiscal quarters to the sum of interest changes during the most recent four quarters and scheduled debt repayments in the next four quarters.

The financial covenants are measured on a quarterly basis. The Company's leverage ratio and fixed charge coverage ratio were 0.90 and 12.6, respectively as of the fiscal quarter ended April 30, 2013. The Company's calculations of these financial ratios are reported in Exhibit No. 99.1 of this Annual Report on Form 10-K. A violation of any of the Credit Facility covenants would result in an event of default and accelerate the repayment of all unpaid principal and interest and the termination of any letters of credit. All of the Company's domestic assets and certain interests in some foreign subsidiaries are pledged as collateral under the three-year Credit Facility Agreement. In addition, the terms of the Credit Facility limit the Company's ability to pay dividends. The Company is required to report its annual financial statements and debt covenant compliance to its lender within 90 days after the end of its fiscal year end. The Company obtained a waiver from its lender which extended its covenant compliance reporting requirement from within 90 days after its fiscal year end to within 120 days. The Company was in compliance with all of its financial covenants as of the end of each quarter during the fiscal year ended April 30, 2013.

Interest on the Credit Facility is based on the bank’s prime rate or LIBOR rate plus a percentage spread between 0.00% and 2.25% depending on whether it uses the bank’s prime rate or LIBOR rate and based on the Company’s current leverage ratio. The Company also pays an annual letter of credit fee ranging from 1.25% to 2.25% of the amount available to be drawn under each outstanding stand-by letter of credit. The annual letter of credit fee is payable quarterly in arrears and varies depending on the Company's leverage ratio.

As of April 30, 2013, the Company had $16.6 million available under its Credit Facility, net of $8.4 million in outstanding letters of credit. There were no outstanding borrowings against the Credit Facility as of April 30, 2013. Subsequent to April 30, 2013, the Company amended its existing Credit Facility and entered into a new four-year borrowing agreement, effective May 31, 2013. Refer to Note 16 of the Consolidated Financial Statements for further discussion on the amended agreement.

Revolving Credit Facility in Taiwan

There were no outstanding balances under the Company’s unsecured Taiwan credit facilities as of April 30, 2013 and 2012. The unsecured commitment for the Taiwan credit facilities totaled $1.4 million at April 30, 2013, bearing interest at 2.6% per annum.

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Income Taxes - Deferred Tax Assets (Liabilities), Long-term (Details) (USD $) In Thousands, unless otherwise specified	Apr. 30, 2013	Apr. 30, 2012
Long-term deferred tax assets (liabilities):
Net operating loss carryforwards	$ 16,528	$ 21,373
Accrued settlement	0	3,049
Capital loss carryforwards	469	456
Goodwill	850	969
Fixed assets	(24)	336
Stock-based compensation	1,396	1,097
Intercompany accounts receivable allowances	204	205
Unrealized foreign exchange loss	(2,233)	(2,350)
Intercompany loan	(842)	0
Foreign withholding tax	(614)	0
Other long-term assets	2,907	1,748
Other long-term liabilities	(1,121)	(1,532)
Long-term deferred tax assets	17,520	25,351
Valuation allowance	(7,309)	(7,824)
Long-term deferred tax assets, net	10,211	17,527
Net Deferred Tax Assets	$ 17,615	$ 20,829

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Commitments and Contingencies (Tables)

12 Months Ended

Apr. 30, 2013

Commitments and Contingencies Disclosure [Abstract]

Schedule of Future Minimum Rental Payments

Future minimum rents payable under operating leases for the fiscal years ending April 30 are as follows:

2014	$	3,132
2015	2,817
2016	2,527
2017	1,625
2018	1,547
2019 and thereafter	2,588
	$	14,236

Schedule of Product Warranty Accrual

The following table presents the activity for the Company’s warranty obligations:

	April 30,
	2013			2012			2011
Beginning Balance	$	3,013		$	2,804		$	2,533
Increase in warranty liability on fiscal year sales	5,880			4,235			2,695
Reduction in warranty liability for claims in fiscal year	(5,169		)	(4,026		)	(2,424		)
Ending Balance	$	3,724		$	3,013		$	2,804

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Property and Equipment - Additional Information (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Apr. 30, 2013	Apr. 30, 2012	Apr. 30, 2011
Property, Plant and Equipment [Line Items]
Depreciation expense	$ 5.4	$ 5.7	$ 5.9
Buildings and Leasehold Improvements [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property and equipment useful life	10 years
Buildings and Leasehold Improvements [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property and equipment useful life	30 years
Machinery and Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property and equipment useful life	3 years
Machinery and Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property and equipment useful life	10 years
Furniture and Fixtures [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property and equipment useful life	3 years
Furniture and Fixtures [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property and equipment useful life	10 years
Computer Equipment and Software [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property and equipment useful life	3 years
Computer Equipment and Software [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property and equipment useful life	5 years

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Shareholders' Equity

12 Months Ended

Apr. 30, 2013

Stockholders' Equity Note [Abstract]

Stockholders' Equity

Shareholders' Equity

Capital Stock

As of April 30, 2013 and 2012, 84 million shares of common stock, par value $0.01, and 1 million shares of preferred stock, par value $0.01, were authorized for issuance. There were 48,452,000 and 47,891,000 shares of common stock outstanding as of April 30, 2013 and 2012, respectively. There were no shares of preferred stock outstanding as of April 30, 2013 or 2012.

Common Share Rights Purchase Plan

The Company maintains a Rights Agreement which provides a dividend of one common share purchase right ("Right") for each outstanding share of common stock, $0.01 par value per share of the Company. Each Right entitles the registered holder to purchase from the Company one share of Common Stock at a price per share of $18.00. The Rights are not exercisable until after the date of commencement of, or the first public announcement of an intention to commence, a tender offer or exchange offer the consummation of which would result in the beneficial ownership by a person (other than an Exempted Entity) or group of 15% or more of the shares of Common Stock then outstanding. The Rights will expire on September 1, 2019 unless the final expiration date is extended or unless the Rights are earlier redeemed or exchanged by the Company.

Stock-Based Compensation

The Company maintains a stock-based compensation plan (the “2005 Plan”) to attract and retain talented employees and promote the growth and success of the business by aligning long-term interests of employees with those of shareholders. There are 5 million shares authorized for issuance under the 2005 Plan in the form of stock, stock units, stock options, stock appreciation rights, or cash awards. As of April 30, 2013, the Company had approximately 0.3 million shares of common stock available for future issuance under its 2005 Plan.

Stock Options

The Company grants stock options to employees of the Company with service and/or performance conditions. The compensation cost of stock options expected to vest is based on their fair value at the grant date, net of expected forfeitures, and recognized ratably over the vesting period. The Company uses the Black-Scholes option-pricing model to calculate grant-date fair value of its stock options, including its historical volatility in estimating expected volatility, and historical employee exercise activity and option expiration data to estimate the expected term assumption in its grant-date valuation. The risk-free interest rate assumption is based on U.S. Treasury constant maturity interest rate whose terms are consistent with the expected term of the Company's stock options. The Company has not declared or paid any cash dividends on its Common Stock and does not anticipate that any dividends will be paid in the foreseeable future based upon management intent, and dividend limitation terms of the Company's Credit Facility. All options become exercisable upon a change in control of the Company unless the surviving company assumes the outstanding options or substitutes similar awards for the outstanding awards of the 2005 Plan. The maximum term of options is 10 years from the date of grant. There were no options granted during the respective fiscal years ended April 30, 2013, 2012 and 2011.

The following table summarizes stock option activities for the fiscal year ended April 30, 2013:

	Number of Options		Weighted-Average Exercise Price		Aggregate Intrinsic Value		Weighted-Average Remaining Contractual Term (Years)
Outstanding at April 30, 2012	388,168		$	10.47	$	—	5.41
Granted	—		—
Exercised	—		—
Expired or forfeited	(13,140	)	$	5.71
Outstanding at April 30, 2013	375,028		$	10.64	—		4.59
Exercisable as of April 30, 2013	375,028		$	10.64	—		4.59
Vested and expected to vest as of April 30, 2013	375,028		$	10.64	—		4.59

	Fiscal Year Ended April 30,
	2013		2012		2011
Total intrinsic value of options exercised	$	—	$	—	$	—
Total fair value of options vested	—		345		345
Cash received from exercise of share options	—		—		—
Tax benefit realized from stock options exercised	—		—		—

For the fiscal year ended April 30, 2012 the Company recognized compensation expense related to stock options of $0.4 million. The Company did not recognize any compensation expense related to stock options for the fiscal year ended April 30, 2013.

Service-Based Stock Awards

The Company grants restricted stock units or common stock to employees and non-employee directors of the Company with service conditions. Each non-employee director is eligible to receive and is granted fully vested common stock worth $40,000 annually. The compensation cost of restricted stock units or fully vested common stock is based on their fair value at the grant date, net of expected forfeitures, and recognized ratably over the service period.

The following table summarizes the service-based stock award activities for employees for the fiscal years ended April 30, 2013, 2012 and 2011:

	Number of Shares		Weighted- Average Grant-date Fair Value
Nonvested at April 30, 2010	1,237,959		$	3.57
Granted	838,666		2.29
Vested	(348,240	)	3.81
Forfeited	(93,607	)	2.86
Nonvested at April 30, 2011	1,634,778		2.90
Granted	846,508		3.44
Vested	(653,447	)	2.61
Forfeited	(48,574	)	3.26
Nonvested at April 30, 2012	1,779,265		3.25
Granted	811,461		2.93
Vested	(641,709	)	3.47
Forfeited	(220,013	)	3.18
Nonvested at April 30, 2013	1,729,004		$	3.03

For the respective fiscal years ended April 30, 2013, 2012 and 2011, the Company recognized compensation expense related to service-based stock awards of $2.5 million, $3.2 million and $1.8 million, and granted stock awards to employees of 0.8 million, 0.8 million and 0.8 million. As of April 30, 2013, total unrecognized compensation cost related to service-based stock awards of $3.5 million is expected to be recognized over a weighted average period of 2 years.

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Intangible Assets

12 Months Ended

Apr. 30, 2013

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets

Intangible Assets

The components of the Company's finite lived intangible assets consisted of the following:

	April 30,
	2013			2012
Patents	$	7,110		$	6,531
Less: Accumulated Amortization	(3,189		)	(2,729		)
Patents, net	$	3,921		$	3,802

Amortization expense for intangible assets with finite lives for the respective fiscal years ended April 30, 2013, 2012 and 2011 amounted to $0.6 million, $0.5 million, and $0.4 million. The estimated annual amortization expense is $0.6 million for each fiscal year through April 30, 2018.

Intangible assets with indefinite lives consisted of the following:

	April 30,
	2013		2012
Trademarks	$	1,199	$	1,134

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Consolidated Statements of Shareholders' Equity (USD $) In Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Accumulated Other Comprehensive Loss
Beginning Balance at Apr. 30, 2010	$ 75,624	$ 465	$ 159,605	$ (79,887)	$ (4,559)
Beginning Balance (in shares) at Apr. 30, 2010		46,927
Net Income	766			766
Other Comprehensive Income, net of tax	924				924
Stock Compensation (in shares)		451
Stock Compensation	2,140	4	2,136
Ending Balance at Apr. 30, 2011	79,454	469	161,741	(79,121)	(3,635)
Ending Balance (in shares) at Apr. 30, 2011		47,378
Net Income	9,449			9,449
Other Comprehensive Income, net of tax	(1,001)				(1,001)
Stock Compensation (in shares)		513
Stock Compensation	3,146	5	3,141
Ending Balance at Apr. 30, 2012	91,048	474	164,882	(69,672)	(4,636)
Ending Balance (in shares) at Apr. 30, 2012	47,891	47,891
Net Income	5,037			5,037
Other Comprehensive Income, net of tax	(1,216)
Stock Compensation (in shares)		561
Stock Compensation	1,865	10	1,855
Ending Balance at Apr. 30, 2013	$ 96,734	$ 484	$ 166,737	$ (64,635)	$ (5,852)
Ending Balance (in shares) at Apr. 30, 2013	48,452	48,452

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Shareholders' Equity - Stock Options Activity (Details) (Stock Options [Member], USD $)	12 Months Ended
	Apr. 30, 2013	Apr. 30, 2012	Apr. 30, 2011
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Share-based compensation expense	$ 0	$ 400,000
The 2005 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award expiration period	10 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding at April 30, 2012	388,168
Granted	0	0	0
Exercised	0
Expired or forfeited	(13,140)
Outstanding at April 30, 2013	375,028	388,168
Exercisable as of April 30, 2013	375,028
Vested and expected to vest as of April 30, 2013	375,028
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Outstanding at April 30, 2012	$ 10.47
Granted	$ 0.00
Exercised	$ 0.00
Expired or forfeited	$ 5.71
Outstanding at April 30, 2013	$ 10.64	$ 10.47
Exercisable as of April 30, 2013	$ 10.64
Vested and expected to vest as of April 30, 2013	$ 10.64
Outstanding Aggregate Intrinsic Value	0	0
Exercisable at April 30, 2013	0
Vested and Expected to Vest as of April 30, 2013, Aggregate Intrinsic Value	0
Outstanding, Weighted-Average Contractual Term (in Years)	4 years 7 months 2 days	5 years 4 months 28 days
Exercisable at April 30, 2013, Weighted-Average Remaining Contracutal Term (in Years)	4 years 7 months 2 days
Vested and Expected to Vest as of April 30, 2013, Weighted-Average Remaining Contractual Terms (in Years)	4 years 7 months 2 days
Total intrinsic value of options exercised	0	0	0
Total fair value of options vested	0	345,000	345,000
Cash received from exercise of share options	0	0	0
Tax benefit realized from stock options exercised	$ 0	$ 0	$ 0

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Commitments and Contingencies - Future Minimum Rental Payments (Details) (USD $) In Thousands, unless otherwise specified	Apr. 30, 2013
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2014	$ 3,132
2015	2,817
2016	2,527
2017	1,625
2018	1,547
2019 and thereafter	2,588
Total	$ 14,236

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Basic and Diluted Income (Loss) Per Share (Tables)

12 Months Ended

Apr. 30, 2013

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted

The following table sets forth the computation of basic and diluted income (loss) from continuing operations per share:

	Fiscal Year Ended April 30,
	2013		2012		2011
Income from Continuing Operations	5,172		$	9,389	$	1,008
Weighted average shares used in computing basic income per share	48,312		47,766		47,216
Dilutive potential common shares from employee stock options and restricted stock units	748		—		12
Weighted average shares used in computing diluted income per share	49,060		47,766		47,228
Basic and diluted income from continuing operations per share	$	0.11	$	0.20	$	0.02

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Business Segments and Geographic Information Business Segments and Geographic Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Apr. 30, 2013	Jan. 31, 2013	Oct. 31, 2012	Jul. 31, 2012	Apr. 30, 2012	Jan. 31, 2012	Oct. 31, 2011	Jul. 31, 2011	Apr. 30, 2013	Apr. 30, 2012	Apr. 30, 2011
Segment Reporting Information [Line Items]
Assets	$ 162,093				$ 167,066				$ 162,093	$ 167,066
Sales	58,407	67,658	67,038	66,235	63,397	65,808	64,533	60,030	259,338	253,768	216,524
Gross Profit	21,056	26,653	25,420	24,793	24,861	26,071	25,316	23,120	97,922	99,368	84,461
Gross Margin Percentage									38.00%	39.00%	39.00%
Standard System Sales [Member]
Segment Reporting Information [Line Items]
Sales									153,202	150,456	117,721
Advanced System Sales [Member]
Segment Reporting Information [Line Items]
Sales									19,925	23,358	28,431
Consumable Parts Sales [Member]
Segment Reporting Information [Line Items]
Sales									86,211	79,954	70,372
Standard Segment [Member]
Segment Reporting Information [Line Items]
Sales									239,413	230,272	187,887
Gross Profit									94,052	93,843	78,321
Gross Margin Percentage									39.00%	41.00%	42.00%
Advanced Segment [Member]
Segment Reporting Information [Line Items]
Sales									19,925	23,496	28,637
Gross Profit									$ 3,870	$ 5,525	$ 6,140
Gross Margin Percentage									19.00%	24.00%	21.00%

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Income Taxes - Provision for Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Apr. 30, 2013	Apr. 30, 2012	Apr. 30, 2011
Current Income Tax Expense (Benefit) [Abstract]
Federal	$ (298)	$ (189)	$ (993)
State	82	112	30
Foreign	2,260	2,049	2,102
Current Tax Expense (Benefit) (after NOL Benefit of $3,307, $2,040, and $1,228)	2,044	1,972	1,139
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]
Federal	2,674	1,652	549
State	244	(49)	252
Foreign	167	(299)	955
Deferred Tax Expense (Benefit) (Net of Change in Valuation Allowance of $(268), $(1,830), and $(351))	3,085	1,304	1,756
Provision (Benefit) for Income Taxes	5,129	3,276	2,895
Current income tax expense (benefit), net operating benefit	3,307	2,040	1,228
Change in valuation allowance	$ (268)	$ (1,830)	$ (351)

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Income Taxes

12 Months Ended

Apr. 30, 2013

Income Tax Disclosure [Abstract]

Income Taxes

Income Taxes

The components of the Company's consolidated income (loss) before income taxes consisted of the following:

	Fiscal Year Ended April 30,
	2013		2012		2011
Income (Loss) from Continuing Operations Before Provision (Benefit) for Income Taxes:
United States	$	7,085	$	1,762	$	(2,419	)
Foreign	3,216		10,903		6,322
Total	$	10,301	$	12,665	$	3,903

The provision (benefit) for income taxes is comprised of:

	Fiscal Year Ended April 30,
	2013			2012			2011
Federal	$	(298	)	$	(189	)	$	(993	)
State	82			112			30
Foreign	2,260			2,049			2,102
Current Tax Expense (Benefit) (after NOL Benefit of $3,307, $2,040, and $1,228)	2,044			1,972			1,139
Federal	2,674			1,652			549
State	244			(49		)	252
Foreign	167			(299		)	955
Deferred Tax Expense (Benefit) (Net of Change in Valuation Allowance of $(268), $(1,830), and $(351))	3,085			1,304			1,756
Provision (Benefit) for Income Taxes	$	5,129		$	3,276		$	2,895

The reconciliation between the Company's effective tax rate on income from continuing operations and the statutory tax rate is as follows:

	Fiscal Year Ended April 30,
	2013		2012		2011
Income tax provision (benefit) at federal statutory rate	34.0	%	34.0	%	34.0	%
State and local taxes net of federal tax benefit	2.1		0.3		4.7
Foreign tax rate differential	(0.8	)	(2.9	)	(0.3	)
Change in valuation allowance	(1.7	)	(3.9	)	5.1
Non deductible/nontaxable items	8.1		7.2		17.4
Foreign earnings not previously subject to U. S. tax	(0.4	)	2.2		—
Foreign withholding taxes	2.2		1.0		1.4
Stock based compensation	0.9		0.8		4.5
Tax credits	—		—		(0.8	)
Prior year reconciled amounts	6.0		(3.2	)	7.0
Examination settlements	—		(10.8	)	—
Other, net	(0.6	)	1.2		1.2
Income tax provision	49.8	%	25.9	%	74.2	%

Components of the net deferred tax assets (liabilities) consisted of the following:\

	April 30, 2013			April 30, 2012
Current deferred tax assets (liabilities):
Deposits on future sales	$	(980	)	$	(1,445	)
Net operating loss carryforwards	1,559			765
Stock-based compensation	655			758
Accrued Settlement	3,332			—
Other current assets	3,324			4,385
Other current liabilities	(160		)	(1,083		)
Current Deferred Tax Assets	7,730			3,380
Valuation allowance	(326		)	(78		)
Total Current Deferred Tax Assets	$	7,404		$	3,302

	April 30, 2013			April 30, 2012
Long-term deferred tax assets (liabilities):
Net operating loss carryforwards	$	16,528		$	21,373
Accrued settlement	—			3,049
Capital loss carryforwards	469			456
Goodwill	850			969
Fixed assets	(24		)	336
Stock-based compensation	1,396			1,097
Intercompany accounts receivable allowances	204			205
Unrealized foreign exchange loss	(2,233		)	(2,350		)
Intercompany loan	(842		)	—
Foreign withholding tax	(614		)	—
Other long-term assets	2,907			1,748
Other long-term liabilities	(1,121		)	(1,532		)
Long-term deferred tax assets	17,520			25,351
Valuation allowance	(7,309		)	(7,824		)
Long-term deferred tax assets, net	10,211			17,527
Net Deferred Tax Assets	$	17,615		$	20,829

As of April 30, 2013, the Company had approximately $43.2 million of domestic net operating loss and $33.0 million of state net operating loss carryforwards to offset future taxable income for federal and state income tax purposes. These net operating loss carryforwards expire between fiscal year 2023 and fiscal year 2031. Net operating loss carryforwards in foreign jurisdictions amount to $38.4 million. A valuation allowance of $23.8 million has been provided against these net operating loss carryforwards in certain of the Company's foreign jurisdictions as realization of the tax benefit in those jurisdictions is uncertain. Most of the foreign net operating losses can be carried forward indefinitely, with certain amounts expiring in 2016. The federal, state and foreign net operating loss carryforwards pursuant to the income tax returns filed include uncertain tax positions taken in prior years. The net operating loss carryforwards pursuant to the income tax returns are larger than the net operating loss carryforwards considered more likely than not to be realized in recognizing deferred tax assets for financial statement purposes. The Company also has a capital loss carryover of $1.3 million, for which it has provided a valuation allowance that expires after fiscal year 2017. Utilization of net operating losses may be subject to limitation due to ownership changes and other limitations provided by the Internal Revenue Code and similar state and foreign provisions. If such a limitation applies, the net operating loss may expire before full utilization.

U.S. income and foreign withholding taxes have not been provided on approximately $15.7 million of cumulative undistributed earnings of foreign subsidiaries. We intend to reinvest these earnings for the foreseeable future. If these amounts were distributed to the U.S., in the form of dividends or otherwise, we would be subject to additional U.S. income taxes.

The Company repatriated $1.9 million from one foreign subsidiary in fiscal year 2011 deemed to be a dividend for tax purposes.

The Company is subject to taxation in the United States, various state and foreign jurisdictions. The Company is no longer subject to examinations by tax authorities for years prior to fiscal year 2003.

The table of deferred tax assets and liabilities shown above does not include certain deferred tax assets at April 30, 2013 and 2012 that arose directly from tax deductions related to equity compensation in excess of compensation recognized for financial reporting. Equity will be increased by $1.6 million if and when such deferred tax assets are ultimately realized. The Company uses ASC 740 ordering for purposes of determining when excess tax benefits have been realized.

The following is a tabular reconciliation of the total amounts of the Company's unrecognized tax benefits for the years ended April 30, 2013, 2012 and 2011:

Balance as of April 30, 2010	$	9,247
Gross increases - tax positions in current period	102
Gross increases - tax positions in prior periods	360
Gross increases in tax positions due to currency fluctuations	87
Balance as of April 30, 2011	9,796
Gross increases - tax positions in current period	114
Gross increases - tax positions in prior periods	33
Gross decreases in tax positions due to currency fluctuations	(47		)
Gross decreases - tax positions in prior periods	(3,130		)
Balance as of April 30, 2012	6,766
Gross increases - tax positions in current period	140
Gross increases - tax positions in prior periods	415
Gross decreases in tax positions due to currency fluctuations	(9		)
Gross decreases - tax positions in prior periods	(54		)
Balance as of April 30, 2013	$	7,258

The balance of unrecognized tax benefits as of April 30, 2013 was $7.3 million of tax benefits that, if recognized, would affect the effective tax rate and would result in adjustments to other tax accounts, primarily deferred taxes. The Company estimates a reduction in its unrecognized tax benefits of approximately $0.4 million to occur within the next twelve monhts.

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Pension and Other Post Retirement Benefits

12 Months Ended

Apr. 30, 2013

Pension and Other Postretirement Benefit Expense [Abstract]

Pension and Other Postretirement Benefits

Pension and Other Post Retirement Benefits

The Company has a 401(k) savings plan in which employees may contribute a percentage of their compensation. At its discretion, the Company may make contributions based on employee contributions and length of employee service. Company contributions and expense under the plan for the respective fiscal years ended April 30, 2013, 2012 and 2011 were $0.9 million, $0.8 million and $0.4 million.

The Company sponsors a defined benefit pension plan in Taiwan, which is governed by a local regulation: The Labor Standard Law (1986). As required by the Labor Standard Law, the Company must remit monthly 4% of the employee's base salary into a designated investment account for the Pension Plan. The pension benefit an employee is entitled to ranges from 2 months to 45 months' salary, based upon years of service. An employee is eligible to withdraw their pension benefit upon 25 years of service, age 55 with 15 years of service, or age 60, if the employee is still employed by the Company upon retirement. If an employee terminates prior to retirement, the employee forfeits all accrued benefits under the Plan. Due to a change in Taiwanese law, all new employees hired after July 2005, are not subject to this plan, thus, the plan is frozen. The Company uses an April 30 measurement date for its plan.

All plan assets are deposited in an interest earning account. The amount of net periodic cost recognized for the respective fiscal years ended April 30, 2013, 2012 and 2011 was less than $0.1 million. The accumulated benefit obligation as of April 30, 2013 and 2012 was $1.1 million and $1.0 million, respectively. The unrecognized net transition obligation as of April 30, 2013 and 2012 was less than $0.1 million and the unrecognized loss was $0.1 million as of April 30, 2013 and 2012. The Company does not anticipate any projected benefit payments under this plan over the next year.

The following table provides a reconciliation of the changes in the plan's benefit obligations and fair value of plan assets for the fiscal years ended April 30, 2013 and 2012:

	Fiscal Year Ended April 30,
	2013			2012
Changes in the Projected Benefit Obligation
Projected Benefit Obligation - Beginning Balance	$	1,361		$	1,327
Service Cost	15			18
Interest Cost	25			26
Actuarial Loss	54			8
Benefits Paid	—			—
Foreign Exchange Adjustment	(10		)	(18		)
Projected Benefit Obligation - Ending Balance	$	1,445		$	1,361

	Fiscal Year Ended April 30,
	2013			2012
Changes in the Value of Plan Assets
Fair Value of Plan Assets - Beginning Balance	$	1,013		$	992
Actual Return on Plan Assets	13			9
Employer Contribution	27			26
Benefits Paid	—			—
Foreign Exchange Adjustment	(8		)	(14		)
Fair Value of Plan Assets - Ending Balance	$	1,045		$	1,013

Actuarial assumptions used to determine benefit obligations were as follows:

	Fiscal Year Ended April 30,
	2013		2012
Discount Rate	1.75	%	1.90	%
Expected Rate of Return on Assets	1.75	%	1.90	%
Salary Increase Rate	3.00	%	3.00	%

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Selected Quarterly Financial Information (unaudited) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Apr. 30, 2013	Jan. 31, 2013	Oct. 31, 2012	Jul. 31, 2012	Apr. 30, 2012	Jan. 31, 2012	Oct. 31, 2011	Jul. 31, 2011	Apr. 30, 2013	Apr. 30, 2012	Apr. 30, 2011
Quarterly Financial Information Disclosure [Abstract]
Sales	$ 58,407	$ 67,658	$ 67,038	$ 66,235	$ 63,397	$ 65,808	$ 64,533	$ 60,030	$ 259,338	$ 253,768	$ 216,524
Gross Margin	21,056	26,653	25,420	24,793	24,861	26,071	25,316	23,120	97,922	99,368	84,461
Income (Loss) From Continuing Operations	(1,905)	2,695	2,175	2,207	2,745	3,259	2,731	654	5,172	9,389	1,008
Net Income	$ (1,905)	$ 2,611	$ 2,110	$ 2,221	$ 2,643	$ 3,316	$ 2,779	$ 711	$ 5,037	$ 9,449	$ 766
Income (Loss) from Continuing Operations, Per Basic Share	$ (0.04)	$ 0.06	$ 0.04	$ 0.05	$ 0.06	$ 0.07	$ 0.06	$ 0.01	$ 0.11	$ 0.20
Net Income (Loss), Per Basic Share	$ (0.04)	$ 0.05	$ 0.04	$ 0.05	$ 0.06	$ 0.07	$ 0.06	$ 0.01	$ 0.10	$ 0.20
Income (Loss) From Continuing Operations, Per Diluted Share	$ (0.04)	$ 0.05	$ 0.04	$ 0.05	$ 0.06	$ 0.07	$ 0.06	$ 0.01	$ 0.11	$ 0.20
Net Income (Loss), Per Diluted Share	$ (0.04)	$ 0.05	$ 0.04	$ 0.05	$ 0.06	$ 0.07	$ 0.06	$ 0.01	$ 0.10	$ 0.20

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Selected Quarterly Financial Information (unaudited)

12 Months Ended

Apr. 30, 2013

Quarterly Financial Information Disclosure [Abstract]

Selected Quarterly Financial Information (unaudited)

Selected Quarterly Financial Information (unaudited)

Quarterly financial data provides a review of the Company's results and performance throughout the year. The Company's earnings (loss) per share for the full year may not equal the sum of the four quarterly earnings per share amounts because of common share activity during the year. The operating results for any quarter are not necessarily indicative of results for any future period.

Summarized unaudited quarterly financial data was as follow:

	Fiscal Year Ended April 30, 2013
	First		Second		Third		Fourth			Total
Sales	$	66,235	$	67,038	$	67,658	$	58,407		$	259,338
Gross Margin	24,793		25,420		26,653		21,056			97,922
Income (Loss) From Continuing Operations	2,207		2,175		2,695		(1,905		)	5,172
Net Income (Loss)	2,221		2,110		2,611		(1,905		)	5,037
Basic Income (Loss) Per Share:
Income (Loss) From Continuing Operations	$	0.05	$	0.04	$	0.06	$	(0.04	)	$	0.11
Net Income (Loss)	$	0.05	$	0.04	$	0.05	$	(0.04	)	$	0.10
Diluted Income (Loss) Per Share:
Income (Loss) From Continuing Operations	$	0.05	$	0.04	$	0.05	$	(0.04	)	$	0.11
Net Income (Loss)	$	0.05	$	0.04	$	0.05	$	(0.04	)	$	0.10

	Fiscal Year Ended April 30, 2012
	First		Second		Third		Fourth		Total
Sales	$	60,030	$	64,533	$	65,808	$	63,397	$	253,768
Gross Margin	23,120		25,316		26,071		24,861		99,368
Income From Continuing Operations	654		2,731		3,259		2,745		9,389
Net Income	711		2,779		3,316		2,643		9,449
Basic Income Per Share:
Income From Continuing Operations	$	0.01	$	0.06	$	0.07	$	0.06	$	0.20
Net Income	$	0.01	$	0.06	$	0.07	$	0.06	$	0.20
Diluted Income Per Share:
Income From Continuing Operations	$	0.01	$	0.06	$	0.07	$	0.06	$	0.20
Net Income	$	0.01	$	0.06	$	0.07	$	0.06	$	0.20

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Fair Value of Financial Instruments

12 Months Ended

Apr. 30, 2013

Fair Value Disclosures [Abstract]

Fair Value of Financial Instruments

Fair Value of Financial Instruments

The Company discloses and classifies fair value measurements in one of the following three categories:

Level 1:  Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities;

Level 2:  Quoted prices in markets that are not active or inputs which are observable, either directly or indirectly, for substantially the full term of the asset or liability;

Level 3:  Prices or valuation techniques that require inputs that are both significant to the fair value measurement and unobservable (i.e., supported by little or no market activity).

Assets and Liabilities Measured at Fair Value on a Recurring Basis

The Company selectively utilizes forward exchange rate contracts to hedge its exposure to adverse exchange rate fluctuations on foreign currency denominated accounts receivable and accounts payable. The Company records derivatives at fair value. Historically, such derivatives have consisted primarily of foreign currency forward contracts which have not been designated as hedging instruments for accounting purposes. The Company has therefore marked such forward contracts to market with an unrealized gain or loss for the mark-to-market valuation. Such forward contracts are classified as Level 2 because such measurements are determined using published market prices or estimated based on observable inputs such as future exchange rates. There were no open forward exchange contracts as of April 30, 2013 or 2012. Accordingly, the Company had no financial assets and liabilities that qualified for fair value measurement and disclosure.

Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis

Nonfinancial nonrecurring assets and liabilities included on the Company's Consolidated Balance Sheets consist of long-lived assets, including cost-method investments and long-term subordinated notes issued to OMAX, that are measured at fair value and tested and measured for impairment, when necessary. 

Cost Method Investment

In fiscal year 2009, the Company entered into an equity purchase agreement in which it acquired a minority interest in Dardi International (“Dardi”), a waterjet manufacturer based in China. As of April 30, 2013, the carrying value of the Company's investment in Dardi was $3.7 million. The fair value of the Company's investment in Dardi was not estimated as there were no events or changes in circumstances that may have a significant adverse effect on the fair value of the investment, and the Company's management determined that it was not practicable to estimate the fair value of the investment. Further, there are no quoted market prices for the Company's investment, and sufficient information is not readily available for the Company to utilize a valuation model to determine its fair value without incurring excessive costs relative to the materiality of the investment. The Company's cost method investment is evaluated, on at least a quarterly basis for potential other-than-temporary impairment, or when an event or change in circumstances has occurred, that may have a significant adverse effect on the fair value of the investment. 

Impairment indicators the Company considers in each reporting period include the following: whether there has been a significant deterioration in earnings performance, asset quality or business prospects; a significant adverse change in the regulatory, economic, or technological environment; a significant adverse change in the general market condition or geographic area in which the investment operates; industry and sector performance; current equity and credit market conditions; any bona fide offers to purchase the investment for less than the carrying value; and factors that raise significant concern, such as negative cash flow from operations or working capital deficiencies. Since there is no active trading market for this investment, it is for the most part illiquid. Future changes in market conditions, the future performance of the investment, or new information provided by Dardi's management could affect the recorded value of the investment and the amount realized upon liquidation. Due to the significant unobservable inputs, the fair value measurements used to evaluate impairment are Level 3 inputs.There were no impairments identified for the year ended April 30, 2013.

Subordinated Notes

In fiscal year 2010, the Company had an initial fair value measurement of long-term subordinated notes issued to OMAX. These notes were issued to OMAX during the second quarter of fiscal year 2010. These subordinated notes do not trade in an active market and, therefore observable price quotations are not available. In the absence of observable price quotations, the fair value was determined based on a discounted cash flow model which incorporated the effects of the Company's own credit risk in the fair value of the liability. The cash flow assumptions were based on the Company's contractual cash flows and the anticipation that the Company will pay the debt according to its contractual terms and were considered Level 3 inputs. Specifically, in calculating the fair value of these notes, the Company used a four-year maturity date of August 17, 2013 and a discount rate of 10% which was the rate at which management believed the Company could obtain financing of a similar nature from other sources. Since there have been no material changes in the Company's financial condition and no material modifications to the subordinated notes, the estimated fair value of these notes approximates carrying value as of April 30, 2013. The carrying amount of these notes as of April 30, 2013 was $10.6 million. The principal balance and accrued interest on the notes will aggregate to $10.8 million when due in August 2013.

The carrying values of the Company's current assets and liabilities due within one-year approximate fair values due to the short-term nature of these instruments.

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Document and Entity Information (USD $)	12 Months Ended
	Apr. 30, 2013	Oct. 31, 2013	Jul. 23, 2013
Document and Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Apr. 30, 2013
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2013
Entity Registrant Name	FLOW INTERNATIONAL CORP
Entity Central Index Key	0000713002
Current Fiscal Year End Date	--04-30
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding			48,785,906
Entity Well-known Seasoned Issuer	No
Entity Public Float		$ 152,261,857
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No

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Business Segments and Geographic Information

12 Months Ended

Apr. 30, 2013

Segment Reporting [Abstract]

Business Segments and Geographic Information

Business Segments and Geographic Information

The Company reports its operating results to its Chief Executive Officer, who is the chief operating decision maker, based on market segments which is consistent with management’s long-term growth strategy. The Company has two reportable segments: Standard and Advanced. The Standard segment includes sales and cost of sales related to the Company’s cutting and surface preparation systems using ultrahigh-pressure water pumps, as well as parts and services to sustain these installed systems. Systems included in this segment do not require significant custom configuration. The Advanced segment includes sales and cost of sales related to the Company’s complex aerospace and automation systems which require specific custom configuration and advanced features, including robotics, to match unique customer applications.

Segment results are measured based on revenue growth and gross margin. All other expenses and earnings are aggregated and reported on a consolidated basis. It is not practicable to segregate total assets by segment due to reporting system limitations. Total assets for the respective fiscal years ended April 30, 2013 and 2012 were $162.1 million and $167.1 million.

The following table sets forth the revenue and gross margin of operations by reportable segment:

	Fiscal Year Ended April 30,
	2013			2012			2011
Standard Segment:
Sales	$	239,413		$	230,272		$	187,887
Gross Margin	94,052			93,843			78,321
	39		%	41		%	42		%
Advanced Segment:
Sales	19,925			23,496			28,637
Gross Margin	3,870			5,525			6,140
	19		%	24		%	21		%
Total:
Sales	259,338			253,768			216,524
Gross Margin	97,922			99,368			84,461
	38		%	39		%	39		%

The table below represents the Company's sales by category:

	Fiscal Year Ended April 30,
	2013		2012		2011
Standard System Sales	$	153,202	$	150,456	$	117,721
Advanced System Sales	19,925		23,358		28,431
Consumable Parts Sales	86,211		79,954		70,372
	$	259,338	$	253,768	$	216,524

The table below presents the Company's sales to unaffiliated customers and long-lived assets by geographical region:

	Fiscal Year Ended April 30,
Sales by Geographic Region	2013		2012		2011
United States (i)	$	139,829	$	130,342	$	118,882
Europe, Middle East, Africa	50,704		51,429		42,929
Asia Pacific	40,344		41,119		32,011
Latin America	26,061		28,365		20,373
Other Foreign	2,400		2,513		2,329
Total	$	259,338	$	253,768	$	216,524
			April 30,
Long-Lived Assets			2013		2012
United States			$	37,828	$	43,194
Europe, Middle East, Africa			5,572		5,858
Asia Pacific			1,470		1,562
Latin America			764		907
Other Foreign			—		—
Total			$	45,634	$	51,521

i. U.S. sales to unaffiliated customers in foreign countries were $30.7 million, $27.2 million, and $25.5 million in fiscal years 2013, 2012, and 2011, respectively.

The Company recognizes inter-area sales transferred between geographic regions at negotiated prices, but the impact of these inter-area sales have been eliminated in the consolidation.

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Income Taxes - Deferred Tax Assets (Liabilities), Current (Details) (USD $) In Thousands, unless otherwise specified	Apr. 30, 2013	Apr. 30, 2012
Current deferred tax assets (liabilities):
Deposits on future sales	$ (980)	$ (1,445)
Net operating loss carryforwards	1,559	765
Stock-based compensation	655	758
Accrued Settlement	3,332	0
Other current assets	3,324	4,385
Other current liabilities	(160)	(1,083)
Current Deferred Tax Assets	7,730	3,380
Valuation allowance	(326)	(78)
Total Current Deferred Tax Assets	$ 7,404	$ 3,302

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Income Taxes - Reconciliation Between the Company's Effective Tax Rate on Income from Continuing Operations and the Statutory Tax Rate (Details)	12 Months Ended
	Apr. 30, 2013	Apr. 30, 2012	Apr. 30, 2011
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]
Income tax provision (benefit) at federal statutory rate	34.00%	34.00%	34.00%
State and local taxes net of federal tax benefit	2.10%	0.30%	4.70%
Foreign tax rate differential	(0.80%)	(2.90%)	(0.30%)
Change in valuation allowance	(1.70%)	(3.90%)	5.10%
Non deductible/nontaxable items	8.10%	7.20%	17.40%
Foreign earnings not previously subject to U. S. tax	(0.40%)	2.20%	0.00%
Foreign withholding taxes	2.20%	1.00%	1.40%
Stock based compensation	0.90%	0.80%	4.50%
Tax credits	0.00%	0.00%	(0.80%)
Prior year reconciled amounts	6.00%	(3.20%)	7.00%
Examination settlements	0.00%	(10.80%)	0.00%
Other, net	(0.60%)	1.20%	1.20%
Income tax provision	49.80%	25.90%	74.20%