Consolidated Statements of Financial Condition (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Statement Of Financial Position [Abstract]
Held to maturity, fair value	$ 1,711,427	$ 1,657,950
Junior subordinated debentures issued to capital trusts, fair value		$ 147,595
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	232,023,233	232,023,233
Common stock, shares issued	199,629,268	198,499,275
Treasury stock, shares	36,159	61,004