Parent Company Financial Information (Details 2) (USD $) In Thousands, 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
Income:
Interest income	$ 17,973	$ 16,374	$ 14,936	$ 14,235	$ 14,159	$ 13,626	$ 13,046	$ 12,116	$ 63,518	$ 52,947	$ 50,225
Noninterest income	2,617	2,321	2,431	1,724	3,194	1,910	6,529	939	9,093	12,572	6,513
Expense:
Interest expense	1,307	1,366	1,347	1,336	1,538	1,772	1,764	2,075	5,356	7,149	9,596
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 BEFORE INCOME TAX									14,580	25,765	16,983
Income tax benefit	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
Corporation
Income:
Interest income									20	4	4
Noninterest income									3	24	6
Total income									23	28	10
Expense:
Interest expense									307	326	310
Noninterest expense									2,141	1,138	546
Total expense									2,448	1,464	856
INCOME BEFORE INCOME TAX									(2,425)	(1,436)	(846)
Income tax benefit									(827)	(591)	(349)
Net loss (parent only)									(1,598)	(845)	(497)
Equity in net earnings of subsidiaries									10,591	16,621	11,069
NET INCOME									$ 8,993	$ 15,776	$ 10,572