Condensed Parent Company Information (Details 1) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Interest expense	$ 17,320	$ 23,565	$ 31,907
Net income (loss)	(23,406)	13,642	9,982
Net income (loss) available to common shareholders	(26,215)	7,476	5,875
Parent Company
Dividends from wholly-owned subsidiaries	10,000	9,500	26,250
Earnings (losses) of wholly-owned subsidiaries, net of dividends	(31,493)	5,862	(14,536)
Interest expense	(1,111)	(1,041)	(1,054)
All other income and expenses, net	(802)	(679)	(678)
Net income (loss)	(23,406)	13,642	9,982
Preferred stock dividends and accretion	(2,809)	(6,166)	(4,107)
Net income (loss) available to common shareholders	$ (26,215)	$ 7,476	$ 5,875