Condensed Consolidated Statements of Shareholders' Equity (unaudited) $ in Thousands	USD ($)
Balance at beginning of period at Dec. 31, 2013	$ 231,581
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	9,190
Cash dividends declared	(1,375)
Issuance of common stock	37
Share based compensation	581
Share based compensation withholding obligation	0
Repurchase of common stock	0
Net change in accumulated other comprehensive loss, net of related tax effect	2,947
Balance at end of period at Jun. 30, 2014	242,961
Balance at beginning of period at Dec. 31, 2014	250,371
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	9,400
Cash dividends declared	(2,760)
Issuance of common stock	80
Share based compensation	772
Share based compensation withholding obligation	(66)
Repurchase of common stock	(3,668)
Net change in accumulated other comprehensive loss, net of related tax effect	246
Balance at end of period at Jun. 30, 2015	$ 254,375