Shareholders' Equity (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended		0 Months Ended
	Sep. 30, 2011	Sep. 30, 2012	Sep. 12, 2012 Series T Preferred Stock [Member]	Sep. 12, 2012 Series T-ACB Preferred Stock [Member]
Class of Stock [Line Items]
Tier One Leverage Capital Required to be Well Capitalized to Average Assets		5.00%
Tier 1 leverage ratio committed to by the Company		8.00%
Preferred stock sold during period	$ 6,402		$ 36,000	$ 13,300