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Condensed Consolidated Balance Sheets (Parenthetical) - USD ($)
$ in Thousands
Jul. 01, 2017
Dec. 31, 2016
Condensed Consolidated Balance Sheets    
Allowances for accounts receivable (in dollars) $ 6,910 $ 4,253
Allowance for unbilled services (in dollars) $ 2,695 $ 1,720
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 8,197,612 8,333,990
Common stock, shares outstanding 8,197,612 8,333,990