Parent Company Condensed Financial Information (Statements Of Financial Condition) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Cash and cash equivalents	$ 279,839	$ 288,079	$ 229,889	$ 67,496
Available-for-sale Securities	382,479	364,315
Other assets	38,129	51,430
Total	1,981,423	2,122,255	2,377,276
Subordinated debentures	46,393	81,963
Other liabilities	10,215	13,180
Common stock and related accounts	19,733	19,530
Total	1,981,423	2,122,255
Parent Company [Member]
Cash and cash equivalents	12,039	18,245	32,050	37,542
Investment in subsidiary banks	273,849	293,573
Investments in other subsidiaries	8,284	9,355
Available-for-sale Securities	3,161	2,462
Other assets	10,909	8,391
Total	308,242	332,026
Subordinated debentures	46,393	81,963
Other liabilities	2,660	4,007
Common stock and related accounts	259,189	246,056
Total	$ 308,242	$ 332,026