CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Revenues	$ 432,171	$ 374,511	$ 1,239,287	$ 797,134
Cost of services	301,555	258,880	870,830	544,217
Gross profit	130,616	115,631	368,457	252,917
Selling, general and administrative expenses	88,529	77,424	259,144	185,342
Amortization of intangible assets	5,199	6,679	15,853	11,197
Operating income	36,888	31,528	93,460	56,378
Interest expense, net	(3,257)	(6,022)	(12,786)	(10,680)
Write-off of loan costs	0	0	(14,958)	(813)
Income before income taxes	33,631	25,506	65,716	44,885
Provision for income taxes	13,422	10,850	27,075	19,105
Income from continuing operations	20,209	14,656	38,641	25,780
Gain on sale of discontinued operations, net of income taxes	0	0	14,412	0
Income (loss) from discontinued operations, net of income taxes	(59)	847	(951)	2,668
Basic earnings per common share:
Income from continuing operations	$ 0.38	$ 0.28	$ 0.72	$ 0.58
Income (loss) from discontinued operations	$ 0.00	$ 0.02	$ 0.26	$ 0.06
Net Income	$ 0.38	$ 0.30	$ 0.98	$ 0.64
Diluted earnings per common share:
Income from continuing operations	$ 0.37	$ 0.28	$ 0.71	$ 0.56
Income (loss) from discontinued operations	$ 0.00	$ 0.01	$ 0.25	$ 0.06
Net Income	$ 0.37	$ 0.29	$ 0.96	$ 0.62
Number of shares and share equivalents used to calculate earnings per share:
Basic	53,620	52,131	53,350	44,777
Diluted	54,624	53,162	54,394	45,807
Reconciliation of net income to comprehensive income:
Net income	20,150	15,503	52,102	28,448
Changes in fair value of derivatives, net of tax of $19 and $56 for the three months ended September 30, 2013 and 2012, respectively and $94 and $32 for the nine months ended September 30, 2013 and 2012, respectively	29	(93)	172	(54)
Foreign currency translation adjustment	1,504	776	648	106
Comprehensive income	$ 21,683	$ 16,186	$ 52,922	$ 28,500