Fair Value Fair Value (Impaired Financing Receivables Additional Information) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended	12 Months Ended
	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013
Schedule of Impaired Financing Receivables Additional Information [Line Items]
Book Value Of Impaired Loans Carried At Fair Value	$ 20,011	$ 41,002
Partial Charge-Offs On Impaired Loans carried at Fair Value	32,117	48,952
Impaired Financing Receivable, Related Allowance	4,120	10,451
impaired Financing Receivable, loans not held at Fair Value, Carrying Amount	54,534	68,045
Impaired Financing Receivable, Recorded Investment	76,231	112,315	118,251
Impaired loans carried at fair value	17,577	33,819
Impaired Financing Receivable, loans not held at Fair Value, Recorded Investment	56,220	71,313
Partial Charge-offs on Impaired Loans carried at Cost	12,457	14,320
Impaired Financing Receivable, Carrying Value	72,111	101,864
Partial Charge-Offs On Impaired Loans	44,574	63,272
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	4,120	10,451
Financing Receivable, not collateral dependent [Domain]
Schedule of Impaired Financing Receivables Additional Information [Line Items]
Impaired Financing Receivable, Related Allowance	1,686	3,268
Commercial Receivables, excluding Commercial, Financial, and Agricultural [Domain]
Schedule of Impaired Financing Receivables Additional Information [Line Items]
Impaired Financing Receivable, Related Allowance	$ 2,434	$ 7,183