CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $) In Thousands, except Share data, unless otherwise specified	Total	Common Stock	Additional Paid-in Capital	Accumulated Retained Earnings	Accumulated Other Comprehensive Income
Balance at Dec. 31, 2012	$ 134,517	$ 137	$ 107,453	$ 25,822	$ 1,105
Balance (in shares) at Dec. 31, 2012		13,661,648
Increase (Decrease) in Stockholders' Equity
Net income	1,723			1,723
Other comprehensive income	(2,764)				(2,764)
Share-based compensation expense	423		423
Common stock repurchased and retired	(22)		(22)
Common stock repurchased and retired (in shares)		(3,666)
Common stock issued	34,924	29	34,895
Common stock issued (in shares)		2,972,472
Stock options exercised	10		10
Stock options exercised (in shares)		5,332
Balance at Jun. 30, 2013	168,811	166	142,759	27,545	(1,659)
Balance (in shares) at Jun. 30, 2013	16,635,786	16,635,786
Balance at Dec. 31, 2013	175,226	166	143,322	34,815	(3,077)
Balance (in shares) at Dec. 31, 2013	16,656,279	16,656,279
Increase (Decrease) in Stockholders' Equity
Net income	7,275			7,275
Other comprehensive income	3,055				3,055
Share-based compensation expense	257		257
Common stock repurchased and retired	(2,757)	(2)	(2,755)
Common stock repurchased and retired (in shares)		(262,897)
Common stock issued	9,012	6	9,006
Common stock issued (in shares)		562,469
Stock options exercised	113	1	112
Stock options exercised (in shares)		112,790
Balance at Jun. 30, 2014	$ 192,181	$ 171	$ 149,942	$ 42,090	$ (22)
Balance (in shares) at Jun. 30, 2014	17,068,641	17,068,641