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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   22      
Issuance of common stock in connection with stock-based compensation, value   $ 203 (71)   132
Treasury stock purchased, shares   (151)      
Treasury stock purchased, value   $ (1,168)     (1,168)
Stock-based compensation     11   11
Net income (loss)       240 240
Ending balance, shares at Jun. 30, 2018 17,274 (1,395)      
Ending balance, value at Jun. 30, 2018 $ 6,509 $ (12,777) 2,184 49,889 45,805
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   103      
Issuance of common stock in connection with stock-based compensation, value   $ 878 (406)   472
Treasury stock purchased, shares   (156)      
Treasury stock purchased, value   $ (385)     (385)
Stock-based compensation     333   333
Net income (loss)       (529) (529)
Ending balance, shares at Jun. 30, 2019 17,274 (1,513)      
Ending balance, value at Jun. 30, 2019 $ 6,509 $ (12,477) $ 2,230 $ 45,981 $ 42,243