Consolidated Statements Of Comprehensive Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Consolidated Statements Of Comprehensive Income [Abstract]
Gross Revenue	$ 227,641	$ 194,742
Direct Costs	140,188	118,221
Operating costs and expenses:
Indirect and selling expenses	65,871	57,926
Depreciation and amortization	1,815	2,761
Amortization of intangible assets	3,531	2,415
Total operating costs and expenses	71,217	63,102
Operating income	16,236	13,419
Interest expense	(1,307)	(629)
Other income (expense)	(33)	87
Income before income taxes	14,896	12,877
Provision for income taxes	5,959	5,151
Net income	8,937	7,726
Earnings per Share:
Basic	$ 0.45	$ 0.39
Diluted	$ 0.45	$ 0.39
Weighted-average Shares:
Basic	19,769	19,580
Diluted	20,082	19,780
Other comprehensive income:
Foreign currency translation adjustments	(389)	156
Comprehensive income	$ 8,548	$ 7,882