Loans Receivable (Schedule Of Carrying Amount Of Acquired Covered Loans) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Loans Receivable [Line Items]
Total Covered Loans	$ 1,334,449	$ 1,582,747
Covered Loans [Member]
Loans Receivable [Line Items]
ASC 310-30 Loans		263,248
Non-ASC 310-30 Loans		1,319,499
Total Covered Loans		1,582,747
Covered Loans [Member] | Residential Mortgage Loans [Member]
Loans Receivable [Line Items]
ASC 310-30 Loans		50,566
Non-ASC 310-30 Loans		210,820
Total Covered Loans		261,386
Covered Loans [Member] | Commercial Loans [Member]
Loans Receivable [Line Items]
ASC 310-30 Loans		152,450
Non-ASC 310-30 Loans		887,417
Total Covered Loans		1,039,867
Covered Loans [Member] | Consumer Loans [Member]
Loans Receivable [Line Items]
ASC 310-30 Loans		60,232
Non-ASC 310-30 Loans		221,262
Total Covered Loans		281,494
Covered Loans [Member] | Residential 1-4 Family [Member] | Residential Mortgage Loans [Member]
Loans Receivable [Line Items]
ASC 310-30 Loans		50,566
Non-ASC 310-30 Loans		210,820
Total Covered Loans		261,386
Covered Loans [Member] | Real Estate [Member] | Commercial Loans [Member]
Loans Receivable [Line Items]
ASC 310-30 Loans	4,053	146,331
Non-ASC 310-30 Loans	144,825	719,032
Total Covered Loans	148,878	865,363
Covered Loans [Member] | Business [Member] | Commercial Loans [Member]
Loans Receivable [Line Items]
ASC 310-30 Loans		6,119
Non-ASC 310-30 Loans		168,385
Total Covered Loans		174,504
Covered Loans [Member] | Home Equity [Member] | Consumer Loans [Member]
Loans Receivable [Line Items]
ASC 310-30 Loans	116	59,689
Non-ASC 310-30 Loans	6,239	219,402
Total Covered Loans	6,355	279,091
Covered Loans [Member] | Other Consumer [Member] | Consumer Loans [Member]
Loans Receivable [Line Items]
ASC 310-30 Loans		543
Non-ASC 310-30 Loans		1,860
Total Covered Loans		$ 2,403