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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount of deferred tax liability attributable to taxable temporary differences due after one year or the normal operating cycle, if longer, assumed at the acquisition date.

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The amount of identifiable intangible assets recognized as of the acquisition date.

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The amount of property, plant, and equipment recognized as of the acquisition date.

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Note 3 - Acquisitions (Details) - Preliminary Allocation of Purchase Price, 2014 (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Note 3 - Acquisitions (Details) - Preliminary Allocation of Purchase Price, 2014 [Line Items]
Goodwill	$ 495,679,000us-gaap_Goodwill	$ 369,312,000us-gaap_Goodwill	$ 370,143,000us-gaap_Goodwill
Customer Relationships [Member] \| Preliminary Purchase Price Allocation [Member] \| 2014 Acquisitions [Member]
Note 3 - Acquisitions (Details) - Preliminary Allocation of Purchase Price, 2014 [Line Items]
Intangible assets	50,216,000
Trade Names [Member] \| Preliminary Purchase Price Allocation [Member] \| 2014 Acquisitions [Member]
Note 3 - Acquisitions (Details) - Preliminary Allocation of Purchase Price, 2014 [Line Items]
Intangible assets	10,342,000
Noncompete Agreements [Member] \| Preliminary Purchase Price Allocation [Member] \| 2014 Acquisitions [Member]
Note 3 - Acquisitions (Details) - Preliminary Allocation of Purchase Price, 2014 [Line Items]
Intangible assets	590,000
Technology-Based Intangible Assets [Member] \| Preliminary Purchase Price Allocation [Member] \| 2014 Acquisitions [Member]
Note 3 - Acquisitions (Details) - Preliminary Allocation of Purchase Price, 2014 [Line Items]
Intangible assets	1,870,000
Preliminary Purchase Price Allocation [Member] \| 2014 Acquisitions [Member]
Note 3 - Acquisitions (Details) - Preliminary Allocation of Purchase Price, 2014 [Line Items]
Equipment and leasehold improvements	886,000
Goodwill	136,034,000
Net deferred tax liability associated with step-up in book basis	(9,041,000)
Assets acquired and liabilities assumed, net	3,785,000
Total	194,682,000
2014 Acquisitions [Member]
Note 3 - Acquisitions (Details) - Preliminary Allocation of Purchase Price, 2014 [Line Items]
Total	$ 194,700,000