Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 01, 2016	Jul. 03, 2015	Jul. 01, 2016	Jul. 03, 2015
Revenue:
Revenue before reimbursements	$ 68,178	$ 59,423	$ 130,151	$ 114,328
Reimbursements	7,435	6,972	14,240	13,041
Total revenue	75,613	66,395	144,391	127,369
Cost of service:
Personnel costs before reimbursable expenses (includes $1,451 and $1,208 and $2,766 and $2,517 of stock compensation expense in the quarters and six months ended July 1, 2016, and July 3, 2015, respectively)	43,345	37,612	83,011	72,558
Reimbursable expenses	7,435	6,972	14,240	13,041
Total cost of service	50,780	44,584	97,251	85,599
Selling, general and administrative costs (includes $861 and $540 and $1,458 and $1,055 of stock compensation expense in the quarters and six months ended July 1, 2016 and July 3, 2015, respectively)	16,195	15,762	31,262	31,086
Total costs and operating expenses	66,975	60,346	128,513	116,685
Income from operations	8,638	6,049	15,878	10,684
Other income (expense):
Interest income				2
Interest expense	(110)	(109)	(151)	(249)
Income from operations before income taxes	8,528	5,940	15,727	10,437
Income tax expense	3,082	2,249	5,899	3,741
Net income	$ 5,446	$ 3,691	$ 9,828	$ 6,696
Basic net income per common share:
Income per common share from operations	$ 0.19	$ 0.13	$ 0.33	$ 0.23
Weighted average common shares outstanding	29,285,379	28,717,622	29,587,570	28,634,644
Diluted net income per common share:
Income per common share from operations	$ 0.17	$ 0.12	$ 0.30	$ 0.22
Weighted average common and common equivalent shares outstanding	32,881,976	30,888,490	33,117,581	30,402,904