CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)	3 Months Ended
	Mar. 31, 2017	Apr. 01, 2016
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
Contract revenue	$ 68,351,000	$ 33,915,000
Direct costs of contract revenue (exclusive of depreciation and amortization shown separately below):
Salaries and wages	10,801,000	8,534,000
Subcontractor services and other direct costs	39,895,000	11,733,000
Total direct costs of contract revenue	50,696,000	20,267,000
General and administrative expenses:
Salaries and wages, payroll taxes and employee benefits	9,315,000	6,761,000
Facilities and facility related	1,124,000	1,110,000
Stock-based compensation	476,000	207,000
Depreciation and amortization	909,000	610,000
Other	3,867,000	3,122,000
Total general and administrative expenses	15,691,000	11,810,000
Income from operations	1,964,000	1,838,000
Other income (expense)
Interest expense	(33,000)	(50,000)
Other, net	37,000	1,000
Total other (expense) income, net	4,000	(49,000)
Income before income taxes	1,968,000	1,789,000
Income tax expense (benefit)	(673,000)	711,000
Net income	$ 2,641,000	$ 1,078,000
Earnings per share:
Basic (in dollars per share)	$ 0.32	$ 0.13
Diluted (in dollars per share)	$ 0.30	$ 0.13
Weighted-average shares outstanding:
Basic (in shares)	8,281,000	7,996,000
Diluted (in shares)	8,854,000	8,244,000