Consolidated Statements of Operations - USD ($)	3 Months Ended		9 Months Ended
	Sep. 29, 2017	Sep. 30, 2016	Sep. 29, 2017	Sep. 30, 2016
Revenue:
Revenue before reimbursements	$ 65,947,000	$ 66,810,000	$ 198,742,000	$ 196,961,000
Reimbursements	5,515,000	7,308,000	17,719,000	21,548,000
Total revenue	71,462,000	74,118,000	216,461,000	218,509,000
Cost of service:
Personnel costs before reimbursable expenses (includes $1,876 and $1,450 and $5,160 and $4,216 of stock compensation expense in the quarters and nine months ended September 29, 2017 and September 30, 2016, respectively)	42,302,000	42,071,000	127,108,000	125,082,000
Reimbursable expenses	5,515,000	7,308,000	17,719,000	21,548,000
Total cost of service	47,817,000	49,379,000	144,827,000	146,630,000
Selling, general and administrative costs (includes $894 and $793 and $2,427 and $2,251 of stock compensation expense in the quarters and nine months ended September 29, 2017 and September 30, 2016, respectively)	15,771,000	15,732,000	48,039,000	46,994,000
Restructuring costs			1,293,000
Total costs and operating expenses	63,588,000	65,111,000	194,159,000	193,624,000
Income from operations	7,874,000	9,007,000	22,302,000	24,885,000
Other expense:
Interest expense	(184,000)	(137,000)	(401,000)	(288,000)
Income from operations before income taxes	7,690,000	8,870,000	21,901,000	24,597,000
Income tax expense	2,401,000	3,382,000	3,988,000	9,281,000
Net income	$ 5,289,000	$ 5,488,000	$ 17,913,000	$ 15,316,000
Basic net income per common share:
Income per common share from operations	$ 0.18	$ 0.19	$ 0.62	$ 0.52
Weighted average common shares outstanding	28,764,661	28,579,237	28,891,301	29,251,459
Diluted net income per common share:
Income per common share from operations	$ 0.17	$ 0.17	$ 0.56	$ 0.47
Weighted average common and common equivalent shares outstanding	31,957,665	32,375,498	32,254,227	32,870,220