Stockholder's Equity (Details) (USD $)	6 Months Ended	12 Months Ended		6 Months Ended	0 Months Ended	6 Months Ended
	Jun. 30, 2012	Dec. 31, 2011	Dec. 31, 2010	Jun. 30, 2012 Morgan Stanley & Co. Incorporated	Jan. 27, 2010 Morgan Stanley & Co. Incorporated Common Stock	Jun. 30, 2012 Morgan Stanley & Co. Incorporated Common Stock
Stockholders' Equity [Abstract]
Purchase of non-controlling interest in bank owned subsidary			$ (10,152,000)
Non-controlling interest before transaction	869,000
Percentage of ownership in subsidiary after transaction	97.00%
Non-controlling interest after transaction	591,000
Equity Distribution Agreement [Line Items]
Aggregate gross sales proceedes, maximum	12,500,000				40,000,000
Issuance of common stock						734,835
Issuance of common stock, price per share				$ 17.58
Sale of common stock	$ 86,987,000	$ 0	$ 12,477,000