Loans Receivable (Schedule Of Carrying Amount Of Acquired Covered Loans) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Loans Receivable [Line Items]
ASC 310-30 Loans	$ 77,637	$ 89,372
Non-ASC 310-30 Loans	1,183,025	1,245,077
Total Covered Loans	1,260,662	1,334,449
Residential Mortgage Loans [Member]
Loans Receivable [Line Items]
ASC 310-30 Loans	31,031	31,809
Non-ASC 310-30 Loans	178,442	184,465
Total Covered Loans	209,473	216,274
Commercial Loans [Member]
Loans Receivable [Line Items]
ASC 310-30 Loans	18,628	27,180
Non-ASC 310-30 Loans	804,678	849,666
Total Covered Loans	823,306	876,846
Consumer Loans [Member]
Loans Receivable [Line Items]
ASC 310-30 Loans	27,978	30,383
Non-ASC 310-30 Loans	199,905	210,946
Total Covered Loans	227,883	241,329
Residential 1-4 Family [Member] | Residential Mortgage Loans [Member]
Loans Receivable [Line Items]
ASC 310-30 Loans	31,031	31,809
Non-ASC 310-30 Loans	178,442	184,465
Total Covered Loans	209,473	216,274
Real Estate [Member] | Commercial Loans [Member]
Loans Receivable [Line Items]
ASC 310-30 Loans	15,507	23,127
Non-ASC 310-30 Loans	667,726	704,841
Total Covered Loans	683,233	727,968
Business [Member] | Commercial Loans [Member]
Loans Receivable [Line Items]
ASC 310-30 Loans	3,121	4,053
Non-ASC 310-30 Loans	136,952	144,825
Total Covered Loans	140,073	148,878
Home Equity [Member] | Consumer Loans [Member]
Loans Receivable [Line Items]
ASC 310-30 Loans	27,967	30,267
Non-ASC 310-30 Loans	193,533	204,707
Total Covered Loans	221,500	234,974
Consumer - Other [Member] | Consumer Loans [Member]
Loans Receivable [Line Items]
ASC 310-30 Loans	11	116
Non-ASC 310-30 Loans	6,372	6,239
Total Covered Loans	$ 6,383	$ 6,355