Acquisitions - Additional Information (Detail) (Crossing Automation Inc, USD $)	3 Months Ended
Dec. 31, 2012	Oct. 29, 2012
Business Acquisition [Line Items]
Business acquisition, cash payment		$ 59,005,000
Revenue	8,500,000
Net income (loss)	(1,900,000)
Expense related to step-up of acquired inventories	1,500,000
Transaction costs included in selling, general and administrative expense	634,000
Transaction costs related to acquisition	3,600,000
Banker Fees
Business Acquisition [Line Items]
Transaction costs related to acquisition	1,500,000
Incentive Compensation Payments
Business Acquisition [Line Items]
Transaction costs related to acquisition	1,200,000
Legal and professional fees
Business Acquisition [Line Items]
Transaction costs related to acquisition	$ 900,000
Completed Technology
Business Acquisition [Line Items]
Cash flow discount rate used to determine fair value attributed to completed technologies	15.00%
Useful life of intangible assets acquired	7 years 8 months 12 days
Customer Relationships
Business Acquisition [Line Items]
Useful life of intangible assets acquired	8 years

Business Acquisition, Assumptions Used to Estimate Fair Value, Discount Rate

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- Definition

Inventory Step Up

+ References

No definition available.

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- Definition

The total cost of the acquired entity including the cash paid to shareholders of acquired entities, fair value of debt and equity securities issued to shareholders of acquired entities, the fair value of the liabilities assumed, and direct costs of the acquisition.

+ References

+ Details

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- Definition

Amount of direct costs of the business combination including legal, accounting, and other costs incurred to consummate the business acquisition.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 51

-Subparagraph d

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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- Definition

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 25

-Paragraph 23

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- Definition

This element represents the amount of earnings or loss of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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- Definition

This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

+ References

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- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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