Fair Value Measurements (Details 2) - Level 3 - Private Label CMOs - Fair Value, Measurements, Recurring [Member] $ in Thousands	9 Months Ended
	Sep. 30, 2015 USD ($)
Level 3 CMO Roll Forward [Abstract]
Balance, December 31, 2014	$ 33,947
Total realized in earnings	810
Total unrealized loss in comprehensive income	(945)
Net settlements	(2,786)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	$ 31,026
Minimum [Member]
Unobservable Inputs Quantitative Information [Abstract]
Fair Value Inputs, Prepayment Rate	0.00%
Fair Value Inputs, Probability of Default	0.00%
Fair Value Inputs, Loss Severity	0.00%
Fair Value Inputs, Discount Rate	0.00%
Maximum [Member]
Unobservable Inputs Quantitative Information [Abstract]
Fair Value Inputs, Prepayment Rate	19.31%
Fair Value Inputs, Probability of Default	10.52%
Fair Value Inputs, Loss Severity	94.04%
Fair Value Inputs, Discount Rate	37.05%
Weighted Average [Member]
Unobservable Inputs Quantitative Information [Abstract]
Fair Value Inputs, Prepayment Rate	5.00%
Fair Value Inputs, Probability of Default	2.60%
Fair Value Inputs, Loss Severity	32.80%
Fair Value Inputs, Discount Rate	5.60%