CONSOLIDATED STATEMENTS OF NET INCOME AND COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended
	Apr. 02, 2022	Apr. 03, 2021
Income Statement [Abstract]
Gross revenues	$ 190,154	$ 153,095
Direct costs:
Salaries and wages	45,977	41,459
Sub-consultant services	34,825	23,246
Other direct costs	15,525	9,798
Total direct costs	96,327	74,503
Gross profit	93,827	78,592
Operating expenses:
Salaries and wages, payroll taxes and benefits	49,767	42,951
General and administrative	16,387	11,549
Facilities and facilities related	5,185	5,097
Depreciation and amortization	9,934	9,440
Total operating expenses	81,273	69,037
Income from operations	12,554	9,555
Interest expense	(914)	(2,318)
Income before income tax expense	11,640	7,237
Income tax expense	(2,998)	(1,757)
Net income and comprehensive income	$ 8,642	$ 5,480
Earnings per share:
Basic (in dollars per Share)	$ 0.59	$ 0.43
Diluted (in dollars per Share)	$ 0.57	$ 0.41
Weighted average common shares outstanding:
Basic (in shares)	14,693,323	12,876,822
Diluted (in shares)	15,216,105	13,429,102