Loans (Non-accrual Loans, Loans Past Due 90 Days And Other Real Estate Owned And Delinquent Loans By Loan Category) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013		Dec. 31, 2012		Jun. 30, 2012
Financing Receivables Past Due and Other Real Estate Owned [Line Items]
Total non-accrual loans	$ 41,743		$ 25,190		$ 24,815
Loans past due 90 days or more	755		4,435		3,105
Total non-performing loans	1,961,268		1,897,191
Other real estate owned	6,308		4,241		4,919
Total non-performing assets	48,806		33,866		32,839
Nonperforming Financing Receivable [Member]
Financing Receivables Past Due and Other Real Estate Owned [Line Items]
Total non-performing loans	42,498		29,625		27,920
Construction [Member]
Financing Receivables Past Due and Other Real Estate Owned [Line Items]
Total non-accrual loans	2,352		4,538		8,698
Total non-performing loans	266,911		258,684
Commercial Mortgage [Member]
Financing Receivables Past Due and Other Real Estate Owned [Line Items]
Total non-accrual loans	9,324		9,175		5,559
Total non-performing loans	651,034	[1]	617,069	[1]
Commercial [Member]
Financing Receivables Past Due and Other Real Estate Owned [Line Items]
Total non-accrual loans	26,935		10,459		9,536
Total non-performing loans	481,537		470,109
Consumer Loan [Member]
Financing Receivables Past Due and Other Real Estate Owned [Line Items]
Total non-accrual loans	1,116		927		927
Residential Mortgage [Member]
Financing Receivables Past Due and Other Real Estate Owned [Line Items]
Total non-accrual loans	2,016		91		95
Total non-performing loans	$ 93,960		$ 97,717

[1] At June 30, 2013, our owner-occupied loans amounted to $171.3 million, or 26.3% of commercial mortgages as compared to $172.5 million, or 28.0% at December 31, 2012.