CONSOLIDATED STATEMENTS OF CONDITION (PARENTHETICAL) - USD ($) $ in Thousands	Mar. 31, 2018		Dec. 31, 2017
Statement of Financial Position [Abstract]
Held To Maturity Securities Fair Value	$ 98,740	[1]	$ 97,501	[2]
Realizable Value Of Equity Securities	$ 169,340		$ 168,417
Preferred stock, shares authorized	30,000,000		30,000,000
Preferred stock, shares issued	2,006,391		2,006,391
Preferred stock, shares outstanding	2,006,391		2,006,391
Common Stock Par Or Stated Value Per Share	$ 0.01		$ 0.01
Common Stock Shares Authorized	170,000,000		170,000,000
Common Stock Shares Issued	104,263,919		104,238,159
Common Stock Shares Outstanding	102,189,914		102,068,981
Treasury stock	2,074,005		2,169,178

[1] Includes $90.8 million pledged to secure public and trust deposits that the secured parties are not permitted to sell or repledge the collateral.

[2] Includes $92.8 million pledged to secure public and trust deposits that the secured parties are not permitted to sell or repledge the collateral.