Consolidated Statements of Financial Condition (Unaudited) (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Consolidated Statements of Financial Condition [Abstract]
Allowance for loan losses	$ 30,933	$ 42,271
Preferred stock, par value
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares issued
Common stock, par value
Common stock, shares authorized	499,000,000	499,000,000
Common stock, shares issued	37,804,457	37,804,457
Common stock, shares outstanding	32,884,741	32,597,762
Treasury stock, shares	4,919,716	5,206,695