Consolidated Statements Of Financial Condition (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Consolidated Statements Of Financial Condition [Abstract]
Trading securities pledged	$ 686,997	$ 607,586
Preferred stock, par value	$ 1	$ 1
Preferred stock, shares authorized	3,000,000	3,000,000
Preferred stock, shares issued	0	0
Common stock, par value	$ 0.15	$ 0.15
Common stock, shares authorized	97,000,000	97,000,000
Common stock, shares issued	63,744,074	54,967,858
Treasury stock, shares	1,330	77,577
Unearned employee stock ownership plan, shares	0	24,405