Acquisitions (Tables)

9 Months Ended

Sep. 30, 2012

Business Combinations [Abstract]

Schedule of Purchase Price Allocation

The following tables summarize (in thousands) the purchase price allocations for the acquisitions of Apex, which is subject to finalization during the measurement period and HCP and Valesta:

	2012 Acquisition		2011 Acquisitions
	Apex		HCP		Valesta		Total
Current assets	$	169,803	$	3,950	$	6,332	$	10,282
Property and equipment	902		123		299		422
Goodwill	266,716		14,398		17,088		31,486
Identifiable intangible assets	251,555		1,784		5,679		7,463
Other	494		13		26		39
Total assets acquired	$	689,470	$	20,268	$	29,424	$	49,692
Current liabilities	$	77,793	$	1,070	$	4,774	$	5,844
Other	850		49		991		1,040
Total liabilities assumed	78,643		1,119		5,765		6,884
Total purchase price	$	610,827	$	19,149	$	23,659	$	42,808

Schedule of Intangible Assets Acquired as Part of Business Combinations

The following table summarizes (in thousands) the allocation of the purchase price among the identifiable intangible assets for the acquisition of Apex, which is subject to finalization during the measurement period and HCP and Valesta:

		Identifiable Intangible Asset Value
		2012 Acquisition		2011 Acquisitions
	Useful life	Apex		HCP		Valesta		Total
Contractor relations	2 – 5 years	$	10,589	$	814	$	266	$	1,080
Customer relations	2 – 10 years	92,147		950		2,395		3,345
Non-compete agreements	2 – 7 years	2,076		20		440		460
Trademarks	indefinite	146,743		—		2,578		2,578
Total identifiable intangible assets acquired		$	251,555	$	1,784	$	5,679	$	7,463

Schedule of Pro Forma Consolidated Results of Operations

The summary below (in thousands, except for per share data) presents pro forma consolidated results of operations for the nine months ended September 30, 2012 and 2011 as if the acquisitions of HCP and Valesta occurred on January 1, 2010, and the acquisition of Apex occurred on January 1, 2011. The pro forma financial information gives effect to certain adjustments, including: the amortization of intangible assets and interest expense on acquisition-related debt, changes in the management fees, and increased number of common shares as a result of the acquisition. Acquisition-related costs are assumed to have occurred at the beginning of the year prior to acquisition. The pro-forma financial information is not necessarily indicative of the operating results that would have occurred if the acquisition had been consummated as of the date indicated, nor are they necessarily indicative of future operating results.

	Nine Months Ended
	September 30,
	2012		2011
Revenues	$	1,120,323	$	961,320
Operating income	$	91,319	$	55,040
Net income	$	42,506	$	21,626
Basic earnings per share	$	0.82	$	0.42
Diluted earnings per share	$	0.80	$	0.42
Weighted average number of shares outstanding	51,929		51,170
Weighted average number of shares and dilutive shares outstanding	52,959		52,060