Consolidated Statements of Net Income and Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 28, 2020	Mar. 30, 2019
Income Statement [Abstract]
Gross revenues	$ 165,480	$ 117,335
Direct costs (excluding depreciation and amortization):
Salaries and wages	45,034	35,257
Sub-consultant services	27,427	16,952
Other direct costs	8,487	9,696
Total direct costs	80,948	61,905
Gross Profit	84,532	55,430
Operating Expenses:
Salaries and wages, payroll taxes and benefits	45,556	29,238
General and administrative	13,157	8,862
Facilities and facilities related	5,397	3,806
Depreciation and amortization	11,040	6,113
Total operating expenses	75,150	48,019
Income from operations	9,382	7,411
Interest expense	(3,788)	(351)
Income before income tax expense	5,594	7,060
Income tax expense	(1,406)	(1,517)
Net Income and Comprehensive Income	$ 4,188	$ 5,543
Earnings per share:
Basic (in dollars per Share)	$ 0.34	$ 0.46
Diluted (in dollars per Share)	$ 0.33	$ 0.44
Weighted average common shares outstanding:
Basic (in shares)	12,233,477	11,960,944
Diluted (in shares)	12,593,788	12,463,007