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Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($)
$ in Thousands
Common Stock [Member]
Treasury Stock [Member]
AOCI Attributable to Parent [Member]
Retained Earnings [Member]
Total
Balance at Dec. 31, 2017 $ 129,453 $ (337)   $ 143,467 $ 272,583
Net income       35,076 35,076
Payment of dividends       (660) (660)
Stock-based compensation 1,144 204     1,348
Other 1   (1)  
Balance at Sep. 30, 2018 130,597 (132)   177,882 308,347
Balance at Jun. 30, 2018 130,417 (132)   166,503 296,788
Net income   11,599 11,599
Payment of dividends   (220) (220)
Stock-based compensation 180   180
Balance at Sep. 30, 2018 130,597 (132)   177,882 308,347
Balance at Dec. 31, 2018 130,778 (132) 176,345 306,991
Net income 4,746 4,746
Payment of dividends (659) (659)
Stock-based compensation 1,898 1,898
Changes in fair value of hedges, net of tax (2,806) (2,806)
Repurchase of common stock (1,522) (1,522)
Balance at Sep. 30, 2019 132,676 (1,654) (2,806) 180,432 308,648
Balance at Jun. 30, 2019 132,420 (1,653) (2,365) 180,061 308,463
Net income 591 591
Payment of dividends (220) (220)
Stock-based compensation 256 256
Changes in fair value of hedges, net of tax (441) (441)
Repurchase of common stock (1) (1)
Balance at Sep. 30, 2019 $ 132,676 $ (1,654) $ (2,806) $ 180,432 $ 308,648