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Condensed Consolidated Statements of Operations - USD ($)
shares in Thousands, $ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Income Statement [Abstract]        
Revenues $ 39,228 $ 34,263 $ 107,414 $ 99,606
Cost of revenues 30,410 27,366 85,310 79,707
Gross profit 8,818 6,897 22,104 19,899
Selling, general and administrative expenses 8,603 5,303 20,504 16,506
Income from operations 215 1,594 1,600 3,393
Interest income (expense), net (439) (116) (648) (353)
Other income (expense), net (11) (4) 11 (24)
Income (loss) before income taxes (235) 1,474 963 3,016
Income tax expense (benefit) (99) 550 202 1,136
Net income (loss) $ (136) $ 924 $ 761 $ 1,880
Earnings per share:        
Basic $ (0.03) $ 0.21 $ 0.16 $ 0.43
Diluted $ (0.03) $ 0.21 $ 0.16 $ 0.42
Weighted average common shares outstanding:        
Basic 5,342 4,405 4,795 4,371
Diluted 5,365 4,493 4,835 4,469