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CONSOLIDATED STATEMENTS OF OPERATIONS & COMPREHENSIVE INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Apr. 01, 2018
Revenue from services	$ 552,352	$ 554,388
Cost of services	403,976	411,120
Gross profit	148,376	143,268
Selling, general and administrative expense	129,661	125,763
Depreciation and amortization	9,952	10,090
Income from operations	8,763	7,415
Interest expense	722	890
Interest and other income	1,275	3,094
Interest and other income (expense), net	553	2,204
Income before tax expense	9,316	9,619
Income tax expense	1,040	864
Net income	$ 8,276	$ 8,755
Net income per common share:
Basic (in dollars per share)	$ 0.21	$ 0.22
Diluted (in dollars per share)	$ 0.21	$ 0.22
Weighted average shares outstanding:
Basic (in shares)	39,366	40,443
Diluted (in shares)	39,735	40,694
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Comprehensive income	$ 9,602	$ 7,371
Accumulated other comprehensive loss
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Foreign currency translation adjustment	$ 1,326	$ (1,384)

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