CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Revenues	$ 572,123	$ 442,443	$ 1,487,491	$ 1,283,718
Cost of services	380,719	297,605	1,001,678	868,820
Gross profit	191,404	144,838	485,813	414,898
Selling, general and administrative expenses	128,614	100,608	353,416	296,331
Amortization of intangible assets	11,325	5,532	23,151	16,592
Operating income	51,465	38,698	109,246	101,975
Interest expense, net	(9,543)	(3,101)	(17,346)	(9,532)
Write off of Deferred Debt Issuance Cost	0	0	(3,751)	0
Income before income taxes	41,922	35,597	88,149	92,443
Provision for income taxes	17,031	14,874	35,900	38,474
Income from continuing operations	24,891	20,723	52,249	53,969
Gain on sale of discontinued operations, net of income taxes	0	0	25,703	0
Income from discontinued operations, net of tax	34	1,282	360	2,742
Net income	$ 24,925	$ 22,005	$ 78,312	$ 56,711
Basic earnings per common share:
Income from continuing operations	$ 0.47	$ 0.39	$ 1.00	$ 1.00
Discontinued operations	0.00	0.02	0.50	0.05
Net income	0.47	0.41	1.50	1.05
Diluted earnings per common share:
Income from continuing operations	0.47	0.38	0.99	0.98
Discontinued operations	0.00	0.03	0.49	0.05
Net income	$ 0.47	$ 0.41	$ 1.48	$ 1.03
Number of shares and share equivalents used to calculate earnings per share:
Basic	52,654	53,374	52,053	53,955
Diluted	53,304	54,129	52,759	54,804
Reconciliation of net income to comprehensive income:
Net income	$ 24,925	$ 22,005	$ 78,312	$ 56,711
Changes in fair value of derivatives, net of tax	0	19	122	70
Foreign currency translation adjustment, net of tax	290	(2,884)	(2,606)	(3,088)
Comprehensive income	$ 25,215	$ 19,140	$ 75,828	$ 53,693