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	1,972			1,972
Other comprehensive income	461				461
Share-based compensation expense	152		152
Common stock repurchased and retired	(22)		(22)
Common stock repurchased and retired (in shares)		(3,666)
Common stock issued	20,499	17	20,482
Common stock issued (in shares)		1,774,217
Stock options exercised	10		10
Stock options exercised (in shares)		5,332
Balance at Mar. 31, 2013	157,589	154	128,075	27,794	1,566
Balance (in shares) at Mar. 31, 2013	15,437,531	15,437,531
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	2,632			2,632
Other comprehensive income	1,993				1,993
Share-based compensation expense	181		181
Common stock repurchased and retired	(284)		(284)
Common stock repurchased and retired (in shares)		(3,936)
Common stock issued	9,012	6	9,006
Common stock issued (in shares)		562,469
Stock options exercised	100		100
Stock options exercised (in shares)		10,165
Balance at Mar. 31, 2014	$ 188,860	$ 172	$ 152,325	$ 37,447	$ (1,084)
Balance (in shares) at Mar. 31, 2014	17,224,977	17,224,977