Condensed Consolidated Statements of Shareholders' Equity (unaudited) $ in Thousands	USD ($)
Balance at beginning of period at Dec. 31, 2015	$ 251,092
Balance at beginning of period, as adjusted at Dec. 31, 2015	251,092
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	4,100
Cash dividends declared	(1,750)
Issuance of common stock	32
Share based compensation	410
Share based compensation withholding obligation	(66)
Repurchase of common stock	(15,510)
Net change in accumulated other comprehensive loss, net of related tax effect	1,237
Balance at end of period at Mar. 31, 2016	239,545
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative effect of change in accounting	0
Balance at beginning of period at Dec. 31, 2016	248,980
Balance at beginning of period, as adjusted at Dec. 31, 2016	249,332
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	5,974
Cash dividends declared	(2,133)
Issuance of common stock	25
Share based compensation	432
Share based compensation withholding obligation	(427)
Repurchase of common stock	0
Net change in accumulated other comprehensive loss, net of related tax effect	2,272
Balance at end of period at Mar. 31, 2017	255,475
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative effect of change in accounting	$ 352