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Basis Of Presentation (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Basis Of Presentation [Abstract]        
Weighted average shares outstanding (basic) 4,396 4,373 4,404 4,366
Impact of common stock equivalents 25   23  
Weighted average shares outstanding (diluted) 4,421 4,373 4,427 4,366
Net income $ 3,984 $ (5,181) $ 7,221 $ (1,679)
Basic earnings (loss) per share $ 0.91 $ (1.18) $ 1.64 $ (0.38)
Diluted earnings (loss) per share $ 0.90 $ (1.18) $ 1.63 $ (0.38)