CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 28, 2019	Dec. 29, 2018
CONSOLIDATED BALANCE SHEETS
Allowance for accounts receivable (in dollars)	$ 3,838	$ 3,764
Allowance for unbilled services (in dollars)	$ 1,503	$ 415
Preferred stock, par value (in dollars per share)	$ 0	$ 0
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value ( in dollars per share )	$ 0	$ 0
Common stock, shares authorized	25,000,000	25,000,000
Common stock, shares issued	7,814,797	8,010,480
Common stock, shares outstanding	7,814,797	8,010,480