Note 3 - Acquisitions (Detail) - Preliminary Allocation (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Goodwill	$ 370,143	$ 300,260
Preliminary Purchase Price Allocation [Member] \| Customer Relationships [Member]
Intangible assets	44,413
Preliminary Purchase Price Allocation [Member] \| Trade Names [Member]
Intangible assets	11,901
Preliminary Purchase Price Allocation [Member] \| Noncompete Agreements [Member]
Intangible assets	313
Preliminary Purchase Price Allocation [Member] \| Unpatented Technology [Member]
Intangible assets	666
Preliminary Purchase Price Allocation [Member]
Equipment and leasehold improvements	850
Goodwill	60,373
Net deferred tax liability associated with step-up in book basis	(9,610)
Liabilities assumed, net	269
Total	$ 109,175

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

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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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.

+ References

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Amount of acquisition cost of a business combination allocated to noncurrent deferred tax assets net of valuation allowance and noncurrent deferred tax liabilities.

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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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The amount of acquisition cost of a business combination allocated to liabilities assumed.

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-Name Emerging Issues Task Force (EITF)

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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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