Quarterly Results of Operations (Unaudited) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Quarterly Results of Operations (Unaudited)
Interest income	$ 17,973	$ 16,374	$ 14,936	$ 14,235	$ 14,159	$ 13,626	$ 13,046	$ 12,116	$ 63,518	$ 52,947	$ 50,225
Interest expense	1,307	1,366	1,347	1,336	1,538	1,772	1,764	2,075	5,356	7,149	9,596
Provision for loan losses	596	646	322	296	606	145			1,860	751	3,255
Noninterest income	2,617	2,321	2,431	1,724	3,194	1,910	6,529	939	9,093	12,572	6,513
Noninterest expense	12,009	11,771	15,856	11,179	8,977	8,031	8,205	6,641	50,815	31,854	26,904
Income tax provision	2,474	1,846	91	1,176	2,421	2,126	3,795	1,647	5,587	9,989	6,411
NET INCOME	$ 4,204	$ 3,066	$ (249)	$ 1,972	$ 3,811	$ 3,462	$ 5,811	$ 2,692	$ 8,993	$ 15,776	$ 10,572
Earnings per share:
Basic (in dollars per share)	$ 0.26	$ 0.19	$ (0.02)	$ 0.14	$ 0.33	$ 0.34	$ 0.56	$ 0.26	$ 0.57	$ 1.49	$ 1.05
Diluted (in dollars per share)	$ 0.25	$ 0.18	$ (0.02)	$ 0.13	$ 0.32	$ 0.32	$ 0.55	$ 0.25	$ 0.54	$ 1.44	$ 0.99