Parent Company Only Financial Information (Condensed Statements of Cash Flows) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Cash flows from operating activities:
Net income	$ 3,779	$ 3	$ (31,736)
Depreciation	2,609	2,955	3,127
Net cash provided by operating activities	23,541	12,693	22,104
Cash flows from investing activities:
Sale of premises and equipment	17	0	40
Purchase of office properties	(386)	(397)	(987)
Net cash provided by (used in) investing activities	(95,991)	24,316	64,982
Cash flows from financing activities:
Payment of preferred stock dividends	(4,354)	0	0
Net cash provided by (used in) financing activities	32,189	(74,475)	(45,609)
Net change in cash and cash equivalents	(40,261)	(37,466)	41,477
Cash and cash equivalents, beginning of year	107,200	144,666	103,189
Cash and cash equivalents, end of year	66,939	107,200	144,666
Parent Company
Cash flows from operating activities:
Net income	3,779	3	(31,736)
Equity income (loss) from subsidiary	(5,677)	(1,310)	30,267
Depreciation	0	0	0
Other	(132)	659	828
Net cash provided by operating activities	(2,030)	(648)	(641)
Cash flows from investing activities:
Investments in and advances to subsidiaries	(30,000)	0	0
Sale of premises and equipment	0	0	0
Purchase of office properties	0	0	0
Net cash provided by (used in) investing activities	(30,000)	0	0
Cash flows from financing activities:
Proceeds from other borrowings	0	0	0
Proceeds from common stock issuance, net of expenses	21,614	0	0
Proceeds from preferred stock issuance, net of expenses	28,735	0	0
Payment of preferred stock dividends	(4,354)	0	0
Net cash provided by (used in) financing activities	45,995	0	0
Net change in cash and cash equivalents	13,965	(648)	(641)
Cash and cash equivalents, beginning of year	1,515	2,163	2,804
Cash and cash equivalents, end of year	$ 15,480	$ 1,515	$ 2,163