Loans (Non-accrual Loans, Loans Past Due 90 Days And Other Real Estate Owned And Delinquent Loans By Loan Category) (Details) (USD $)	Dec. 31, 2013 loan		Dec. 31, 2012 loan
Financing Receivables Past Due and Other Real Estate Owned [Line Items]
Total non-accrual loans	$ 40,551,000		$ 25,190,000
Loans past due 90 days or more	110,000		4,435,000
Total non-performing loans	1,951,606,000		1,897,191,000
Other real estate owned	26,295,000		4,241,000
Total non-performing assets	66,956,000		33,866,000
Number of troubled debt restructured loans	5		8
Nonperforming Financing Receivable [Member]
Financing Receivables Past Due and Other Real Estate Owned [Line Items]
Total non-performing loans	40,661,000		29,625,000
Non-accrual Loan [Member]
Financing Receivables Past Due and Other Real Estate Owned [Line Items]
Number of troubled debt restructured loans	4		3
Construction [Member]
Financing Receivables Past Due and Other Real Estate Owned [Line Items]
Total non-accrual loans	1,667,000	[1]	4,538,000	[1]
Total non-performing loans	258,889,000		258,684,000
Construction [Member] | Non-accrual Loan [Member]
Financing Receivables Past Due and Other Real Estate Owned [Line Items]
Troubled debt restructured loans	263,000		276,000
Commercial Mortgage [Member]
Financing Receivables Past Due and Other Real Estate Owned [Line Items]
Total non-accrual loans	5,861,000	[1]	9,175,000	[1]
Total non-performing loans	625,810,000		617,069,000
Commercial Mortgage [Member] | Non-accrual Loan [Member]
Financing Receivables Past Due and Other Real Estate Owned [Line Items]
Troubled debt restructured loans	3,100,000		214,000
Commercial [Member]
Financing Receivables Past Due and Other Real Estate Owned [Line Items]
Total non-accrual loans	29,651,000	[1]	10,459,000	[1]
Total non-performing loans	450,113,000		470,109,000
Commercial [Member] | Non-accrual Loan [Member]
Financing Receivables Past Due and Other Real Estate Owned [Line Items]
Troubled debt restructured loans			161,000
Consumer Loan [Member]
Financing Receivables Past Due and Other Real Estate Owned [Line Items]
Total non-accrual loans	1,356,000		927,000
Residential Mortgage [Member]
Financing Receivables Past Due and Other Real Estate Owned [Line Items]
Total non-accrual loans	2,016,000		91,000
Total non-performing loans	$ 94,850,000		$ 97,717,000

[1] Included in the non-accrual loan balances as of December 31, 2013 are four troubled debt restructured loans. $263,000 in construction and $3.1 million in commercial mortgage. Included in the non-accrual loan balances as of December 31, 2012 are three troubled debt restructured loans: $276,000 in construction, $214,000 in commercial mortgage and $161,000 in commercial.