Consolidated Statements Of Earnings (USD $) In Thousands, except Per Share data	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Consolidated Statements Of Earnings
Gross Revenue	$ 213,395	$ 199,647	$ 408,137	$ 374,085
Direct Costs	133,522	125,131	251,743	232,690
Operating costs and expenses:
Indirect and selling expenses	59,270	56,130	117,196	107,160
Depreciation and amortization	2,778	2,643	5,539	5,311
Amortization of intangible assets	2,321	3,082	4,736	6,163
Total operating costs and expenses	64,369	61,855	127,471	118,634
Operating income	15,504	12,661	28,923	22,761
Interest expense	(564)	(917)	(1,193)	(1,880)
Other income	2	79	89	98
Income before income taxes	14,942	11,823	27,819	20,979
Provision for income taxes	5,979	4,622	11,130	8,358
Net income	$ 8,963	$ 7,201	$ 16,689	$ 12,621
Earnings per Share:
Basic	$ 0.46	$ 0.37	$ 0.85	$ 0.65
Diluted	$ 0.45	$ 0.37	$ 0.84	$ 0.65
Weighted-average Shares:
Basic	19,688	19,351	19,634	19,317
Diluted	19,847	19,568	19,849	19,537