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Fair Value Measurements (Details 1) - Nonrecurring - Level 3 Inputs - Mortgage servicing rights - Discounted cash flows - USD ($)
$ in Thousands
9 Months Ended 12 Months Ended
Sep. 30, 2015
Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair Value $ 315 $ 646
Valuation Technique [1] Discounted cash flows Discounted cash flows
Unobservable Input Prepayment PSA, Discount rate, Maturity (months) WAM, Costs to service Prepayment PSA, Discount rate, Maturity (months) WAM, Costs to service
Minimum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Prepayment PSA 157.00% 157.00%
Discount rate 8.50% 8.50%
Maturity (months) WAM 37 months 37 months
Costs to service $ 65 $ 65
Maximum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Prepayment PSA 335.00% 335.00%
Discount rate 9.25% 9.25%
Maturity (months) WAM 325 months 325 months
Costs to service $ 750 $ 750
[1] The estimated fair value on mortgage servicing rights is determined through a cash flow analysis performed at the loan level and is based on the objective attributes of the portfolio (i.e., note rate, loan amount, etc.) and industry assumptions used in the marketplace.