Condensed Consolidated Statements of Shareholders' Equity (unaudited) - USD ($) $ in Thousands	Common Stock [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Loss [Member]	Total
Balance at beginning of period at Dec. 31, 2017	$ 324,986	$ (54,054)	$ (5,999)	$ 264,933
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		9,161		9,161
Cash dividends declared	0	(3,206)	0	(3,206)
Repurchase of common stock	0
Issuance of common stock	13	0	0	13
Share based compensation	407	0	0	407
Share based compensation withholding obligation	(888)	0	0	(888)
Other comprehensive income (loss)	0	0	(2,503)	(2,503)
Balances at end of period at Mar. 31, 2018	324,518	(48,099)	(8,502)	267,917
Balance at beginning of period at Dec. 31, 2018	377,372	(28,270)	(10,108)	338,994
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		9,381		9,381
Cash dividends declared	0	(4,246)	0	(4,246)
Repurchase of common stock	(2,530)	0	0	(2,530)
Issuance of common stock	282	0	0	282
Share based compensation	420	0	0	420
Share based compensation withholding obligation	(866)	0	0	(866)
Other comprehensive income (loss)	0	0	3,291	3,291
Balances at end of period at Mar. 31, 2019	$ 374,678	$ (23,135)	$ (6,817)	$ 344,726