Parent Company Financial Information (Details 3) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Parent Company Financial Information
Net Income (Loss) Available to Common Stockholders, Basic	$ 3,891	$ 5,450	$ 4,643	$ 2,632	$ 4,204	$ 3,066	$ (249)	$ 1,972	$ 16,616	$ 8,993	$ 15,776
Adjustments to reconcile net income to cash used in operating activities:
Share-based Compensation									514	943	177
Increase (Decrease) in Accounts Payable and Accrued Liabilities									2,764	9,683	2,033
Net cash provided by operating activities									13,287	15,504	12,169
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from Issuance of Common Stock										4,560	30,958
Repurchase of common stock									(5,638)	(59)	(195)
Proceeds from issuance of subordinated debentures									58,834
Net cash provided (used in) financing activities									222,938	(62,930)	78,309
Net increase (decrease) in cash and cash equivalents									(15,888)	67,461	(883)
Cash and cash equivalents, beginning of year				126,813				59,352	126,813	59,352	60,235
Cash and cash equivalents, end of year	110,925				126,813				110,925	126,813	59,352
Corporation
Parent Company Financial Information
Net Income (Loss) Available to Common Stockholders, Basic									16,616	8,993	15,776
Adjustments to reconcile net income to cash used in operating activities:
Share-based Compensation									514	943	177
Equity in net earnings of subsidiaries									(18,720)	(10,591)	(16,621)
Increase (Decrease) in Accounts Payable and Accrued Liabilities									1,560	(39)	154
Increase (decrease) in current and deferred taxes									(286)	1,153	93
Decrease (increase) in other assets									232	(504)	44
Net cash provided by operating activities									(84)	(45)	(377)
CASH FLOWS FROM FINANCING ACTIVITIES
Dividend from Bank									2,472		800
Proceeds from Issuance of Common Stock										4,560	30,958
Repurchase of common stock									(5,638)	(59)	(195)
Proceeds from exercise of options and warrants									267	90	237
Capital contribution to Bank									(40,000)	(8,700)	(25,000)
Proceeds from issuance of subordinated debentures									58,834
Net cash provided (used in) financing activities									15,935	(4,109)	6,800
Net increase (decrease) in cash and cash equivalents									15,851	(4,154)	6,423
Cash and cash equivalents, beginning of year				2,873				7,027	2,873	7,027	604
Cash and cash equivalents, end of year	$ 18,724				$ 2,873				$ 18,724	$ 2,873	$ 7,027