Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended
	Mar. 29, 2019	Mar. 30, 2018
Revenue:
Total revenue	$ 67,155	$ 71,107
Cost of service:
Total cost of service	44,589	46,910
Stock compensation expense	999	1,823
Selling, general and administrative costs	14,341	15,076
Stock compensation expense	705	841
Acquisition-related contingent consideration liability	(1,070)
Total costs and operating expenses	58,565	62,827
Income from operations	8,590	8,280
Other expense:
Interest expense	(101)	(179)
Income from operations before income taxes	8,489	8,101
Income tax expense	1,440	800
Income from continuing operations	7,049	7,301
Gain from discontinued operations	45	66
Net income	$ 7,094	$ 7,367
Basic net income per common share:
Income per common share from continuing operations	$ 0.24	$ 0.25
Gain per common share from discontinued operations	0.00	0.00
Net income per common share	0.24	0.25
Diluted net income per common share:
Income per common share from continuing operations	0.22	0.23
Gain per common share from discontinued operations	0.00	0.00
Net income per common share	$ 0.22	$ 0.23
Weighted average common shares outstanding:
Basic	29,682,888	29,089,356
Diluted	32,294,450	31,814,813
Revenue Before Reimbursements [Member]
Revenue:
Total revenue	$ 62,370	$ 66,039
Reimbursements [Member]
Revenue:
Total revenue	4,785	5,068
Cost of service:
Total cost of service	4,785	5,068
Cost Before Reimbursements [Member]
Cost of service:
Total cost of service	$ 38,805	$ 40,019