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Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($)
shares in Thousands, $ in Thousands
Common Stock
In Treasury
Paid-In Capital
Retained Earnings
Total
Beginning balance, shares at Dec. 31, 2017 17,274 (1,266)      
Beginning balance, value at Dec. 31, 2017 $ 6,509 $ (11,812) $ 2,244 $ 49,649 $ 46,590
Issuance of common stock in connection with stock-based compensation, shares   16      
Issuance of common stock in connection with stock-based compensation, value   $ 151 (54)   97
Treasury stock purchased, shares   (131)      
Treasury stock purchased, value   $ (1,052)     (1,052)
Stock-based compensation 5   5
Net income (loss) 70 70
Ending balance, shares at Mar. 31, 2018 17,274 (1,381)      
Ending balance, value at Mar. 31, 2018 $ 6,509 $ (12,713) 2,195 49,719 45,710
Beginning balance, shares at Dec. 31, 2018 17,274 (1,460)      
Beginning balance, value at Dec. 31, 2018 $ 6,509 $ (12,970) 2,303 46,563 42,405
Cumulative impact of change in accounting principles, net of tax at Dec. 31, 2018       (53) (53)
Issuance of common stock in connection with stock-based compensation, shares   41      
Issuance of common stock in connection with stock-based compensation, value   $ 351 142   493
Treasury stock purchased, shares (82)      
Treasury stock purchased, value $ (205) (205)
Stock-based compensation     218   218
Net income (loss)       (388) (388)
Ending balance, shares at Mar. 31, 2019 17,274 (1,501)      
Ending balance, value at Mar. 31, 2019 $ 6,509 $ (12,824) $ 2,663 $ 46,122 $ 42,470