Consolidated Statements of Financial Condition (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Statement of Financial Position [Abstract]
Held to maturity, fair value	$ 1,838,632	$ 1,711,427
Loans held for sale, fair value		$ 0
Preferred stock, par value
Preferred stock, shares authorized	30,000,000	30,000,000
Preferred stock, shares issued	0	0
Common stock, par value
Common stock, shares authorized	332,023,233	232,023,233
Common stock, shares issued	200,685,721	199,629,268
Treasury stock, shares	10,755	36,159