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Net Income (Loss) Per-Share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Basic Net Income (Loss) per Share:        
Net income (loss) $ 165 $ (601) $ (1,171) $ (2,221)
Weighted-average shares of common stock outstanding 15,652 15,632 15,659 15,527
Basic net income (loss) per share $ 0.01 $ (0.04) $ (0.07) $ (0.14)
Diluted Net Income (Loss) per Share:        
Less: interest expense on convertible debt $ 4 $ 0 $ 0 $ 0
Net Income (Loss) Available to Common Stockholders, Diluted $ 161 $ (601) $ (1,171) $ (2,221)
Weighted average shares of common stock outstanding 15,652 15,632 15,659 15,527
Effect of conversion of convertible notes 43 0 0 0
Number of shares used in diluted per share computation 15,695 15,632 15,639 15,527
Diluted net income (loss) per share $ 0.01 $ (0.04) $ (0.07) $ (0.14)