Consolidated Statements of Comprehensive Income - USD ($) shares in Thousands, $ in Thousands		12 Months Ended
		Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Revenue		$ 1,185,097	$ 1,132,232	$ 1,050,134
Direct Costs		745,137	694,436	654,946
Operating costs and expenses
Indirect and selling expenses		328,048	329,159	302,020
Depreciation and amortization		16,638	16,222	13,369
Amortization of intangible assets		12,481	17,184	10,437
Total operating costs and expenses		357,167	362,565	325,826
Operating Income		82,793	75,231	69,362
Interest expense		(9,470)	(10,072)	(4,254)
Other income (expense)		1,184	(1,559)	(958)
Income Before Income Taxes		74,507	63,600	64,150
Provision for Income Taxes		27,923	24,231	24,120
Net Income		$ 46,584	$ 39,369	$ 40,030
Earnings per Share:
Basic (in dollars per share)		$ 2.45	$ 2.04	$ 2.04
Diluted (in dollars per share)		$ 2.40	$ 2	$ 2
Weighted-average Common Shares Outstanding:
Basic (in shares)		18,989	19,335	19,608
Diluted (in shares)		19,416	19,663	19,997
Other comprehensive (loss) income:
Foreign currency translation adjustments, net of tax		$ (4,324)	$ (5,010)	$ (1,491)
Gain on sale of interest rate hedge agreement, net of tax	[1]	2,175
Total other comprehensive loss, net of tax		(2,149)	(5,010)	(1,491)
Comprehensive income, net of tax		$ 44,435	$ 34,359	$ 38,539

[1] On December 1, 2016, the Company sold the interest rate hedge agreement. The fair value of the interest rate hedge was recorded in other comprehensive (loss) income and reclassified to earnings when earnings are impacted by the cash flows of the hedged items, the interest payments on the Credit Facility or its replacement from January 31, 2018 to January 31, 2023.