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Consolidated Statements of Shareholders' Equity - USD ($)
$ in Thousands
Common Stock [Member]
Treasury Stock [Member]
AOCI Attributable to Parent [Member]
Retained Earnings [Member]
Total
Balance at Dec. 31, 2015 $ 128,129 $ (699) $ (70) $ 127,335 $ 254,695
Net income (loss)       (1,078) (1,078)
Payment of dividends       (877) (877)
Employee stock purchase 46       46
Stock-based compensation 444 90     534
Changes in fair value of hedges     70   70
Balance at Dec. 31, 2016 128,619 (609) 125,380 253,390
Net income (loss)       18,963 18,963 [1]
Payment of dividends       (878) (878)
Employee stock purchase 10       10
Stock-based compensation 824 272     1,096
Other     2 2
Balance at Dec. 31, 2017 129,453 (337)   143,467 272,583
Net income (loss)       33,759 33,759 [1]
Payment of dividends       (880) (880)
Stock-based compensation 1,324 205     1,529
Other 1     (1)
Balance at Dec. 31, 2018 $ 130,778 $ (132)   $ 176,345 $ 306,991
[1] Includes a $6.2 million tax benefit related to the U.S. Tax Cuts and Jobs Act.