Acquisitions - Summary of Purchase Price Allocation of Acquired Assets and Assumed Liabilities Based on Estimated Fair Value (Detail) (Stonewood acquisition [Member], USD $) In Thousands, unless otherwise specified	Jul. 08, 2010
Stonewood acquisition [Member]
Business Acquisition [Line Items]
Current assets	$ 4,382
Property and equipment	484
Identifiable intangible assets	11,199
Goodwill	7,381
Total assets acquired	23,446
Current liabilities	(1,843)
Other long-term liabilities	(2,770)
Total liabilities assumed	(4,613)
Total purchase price	$ 18,833

Acquisitions - Summary of Purchase Price Allocation of Acquired Assets and Assumed Liabilities Based on Estimated Fair Value (Detail) (Stonewood acquisition [Member], USD $)
In Thousands, unless otherwise specified

Jul. 08, 2010

Stonewood acquisition [Member]

Current assets

$ 4,382

Property and equipment

484

Identifiable intangible assets

11,199

Goodwill

7,381

Total assets acquired

23,446

Current liabilities

(1,843)

Other long-term liabilities

(2,770)

Total liabilities assumed

(4,613)

Total purchase price

$ 18,833

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The amount of acquisition cost of a business combination allocated to an identifiable intangible asset that will be amortized.

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The amount of acquisition cost of a business combination allocated to assets acquired.

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The total purchase price of the acquired entity. This includes cash paid to equity interest holders of the acquired entity, fair value of debt and equity securities issued to equity holders of the acquired entity, and transaction costs paid to third parties to consummate the acquisition.

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The amount of acquisition cost of a business combination allocated to current assets.

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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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Amount of goodwill arising from a business combination, which is the excess of the cost of the acquired entity over the amounts assigned to assets acquired and liabilities assumed.

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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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The amount of acquisition cost of a business combination allocated to noncurrent liabilities of the acquired entity.

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The amount of acquisition cost of a business combination allocated to property, plant and equipment to be used in ongoing operations.

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