Fair Value Fair Value (Impaired Financing Receivables Additional Information) (Details) (USD $)	6 Months Ended	12 Months Ended
	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013
Schedule of Impaired Financing Receivables Additional Information [Line Items]
Book Value Of Impaired Loans Carried At Fair Value	$ 33,600,000	$ 41,000,000
Partial Charge-Offs On Impaired Loans carried at Fair Value	42,900,000	49,000,000
Impaired Financing Receivable, Related Allowance	6,343,000	10,451,000
impaired Financing Receivable, loans not held at Fair Value, Carrying Amount	59,479,000	68,045,000
Impaired Financing Receivable, Recorded Investment	96,005,000	112,315,000	126,102,000
Impaired loans carried at fair value	30,183,000	33,819,000
Impaired Financing Receivable, loans not held at Fair Value, Recorded Investment	62,420,000	71,313,000
Partial Charge-offs on Impaired Loans carried at Cost	15,485,000	14,320,000
Impaired Financing Receivable, Carrying Value	89,700,000	101,900,000
Partial Charge-Offs On Impaired Loans	58,400,000	63,300,000
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	6,343,000	10,451,000
Financing Receivable, not collateral dependent [Domain]
Schedule of Impaired Financing Receivables Additional Information [Line Items]
Impaired Financing Receivable, Related Allowance	2,941,000	3,268,000
Commercial Receivables, excluding Commercial, Financial, and Agricultural [Domain]
Schedule of Impaired Financing Receivables Additional Information [Line Items]
Impaired Financing Receivable, Related Allowance	$ 3,402,000	$ 7,183,000