Consolidated Statements of Earnings and Other Comprehensive Income (Unaudited) - 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 and reimbursable expenses:
Revenues	$ 209,881	$ 198,049	$ 621,378	$ 618,185
Reimbursable expenses	17,356	18,679	55,900	58,923
Total revenues and reimbursable expenses	227,237	216,728	677,278	677,108
Direct costs and reimbursable expenses (exclusive of depreciation and amortization shown in operating expenses):
Direct costs	115,587	129,899	366,078	377,798
Amortization of intangible assets and software development costs	4,796	1,227	12,277	3,618
Reimbursable expenses	17,103	18,651	55,826	58,981
Total direct costs and reimbursable expenses	137,486	149,777	434,181	440,397
Operating expenses and other operating (gains) losses:
Selling, general and administrative expenses	43,629	39,276	132,627	120,148
Restructuring charges	303	233	2,490	1,396
Litigation and other (gains) losses	0	(150)	524	(590)
Depreciation and amortization	8,994	6,315	25,771	18,638
Total operating expenses and other operating (gains) losses	52,926	45,674	161,412	139,592
Operating income	36,825	21,277	81,685	97,119
Other income (expense), net:
Interest expense, net of interest income	(4,642)	(1,878)	(13,800)	(4,843)
Other income (expense), net	(1,379)	(54)	(1,939)	291
Total other expense, net	(6,021)	(1,932)	(15,739)	(4,552)
Income before income tax expense	30,804	19,345	65,946	92,567
Income tax expense	11,430	7,126	26,237	26,309
Net income	$ 19,374	$ 12,219	$ 39,709	$ 66,258
Earnings per share:
Basic (USD per share)	$ 0.88	$ 0.54	$ 1.79	$ 2.94
Diluted (USD per share)	$ 0.86	$ 0.53	$ 1.76	$ 2.87
Weighted average shares used in calculating earnings per share:
Basic (per share)	22,107	22,488	22,151	22,573
Diluted (per share)	22,592	22,975	22,616	23,052
Comprehensive income:
Net income	$ 19,374	$ 12,219	$ 39,709	$ 66,258
Foreign currency translation loss, net of tax	(615)	(1,127)	(201)	(735)
Unrealized gain on investment, net of tax	0	152	4,135	152
Unrealized gain (loss) on cash flow hedging instruments, net of tax	(91)	304	(252)	124
Other comprehensive income (loss)	(706)	(671)	3,682	(459)
Comprehensive income	$ 18,668	$ 11,548	$ 43,391	$ 65,799