Loans (Schedule Of Recorded Investment In Loan Pools Based On Payment Activity) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Covered Pool Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	$ 271,844	$ 356,655
Covered Pool Loans [Member] | Performing Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	195,143	274,120
Covered Pool Loans [Member] | Non-Performing Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	76,701	82,535
Commercial And Industrial [Member] | Covered Pool Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	83,742	121,151
Commercial And Industrial [Member] | Covered Pool Loans [Member] | Performing Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	67,424	97,319
Commercial And Industrial [Member] | Covered Pool Loans [Member] | Non-Performing Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	16,318	23,832
Commercial Real Estate [Member] | Covered Pool Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	160,651	195,646
Commercial Real Estate [Member] | Covered Pool Loans [Member] | Performing Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	112,047	149,817
Commercial Real Estate [Member] | Covered Pool Loans [Member] | Non-Performing Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	48,604	45,829
Construction [Member] | Covered Pool Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	6,974	16,153
Construction [Member] | Covered Pool Loans [Member] | Performing Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	623	6,411
Construction [Member] | Covered Pool Loans [Member] | Non-Performing Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	6,351	9,742
Residential Mortgage [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	2,285,590	1,925,430
Residential Mortgage [Member] | Performing Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	2,253,944	1,896,936
Residential Mortgage [Member] | Non-Performing Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	31,646	28,494
Residential Mortgage [Member] | Covered Pool Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	15,546	17,026
Residential Mortgage [Member] | Covered Pool Loans [Member] | Performing Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	10,118	13,894
Residential Mortgage [Member] | Covered Pool Loans [Member] | Non-Performing Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	5,428	3,132
Consumer [Member] | Covered Pool Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	4,931	6,679
Consumer [Member] | Covered Pool Loans [Member] | Performing Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	$ 4,931	$ 6,679