XML 70 R59.htm IDEA: XBRL DOCUMENT v3.8.0.1
Mortgage Servicing Rights (Valuation allowance) (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Jun. 30, 2017
Dec. 31, 2016
Jun. 30, 2016
Dec. 31, 2015
Valuation Allowance for Impairment of Recognized Servicing Assets [Line Items]                
Valuation allowance $ 0 $ 1,989 $ 0 $ 1,989 $ 0 $ 4 $ 2,349 $ 95
Valuation allowance provision (reversal) $ 0 $ (360) $ (4) $ 1,894