Fair Value Measurements Fair Value Measurements (Details 3) (Covered Private Label Collateralized Mortgage Obligations Member [Domain], Fair Value, Measurements, Recurring [Member], Level 3, USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2014
Covered Private Label Collateralized Mortgage Obligations Member [Domain] | Fair Value, Measurements, Recurring [Member] | Level 3
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings	$ 862
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss)	76
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements	(3,533)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	$ 37,904	$ 35,309