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Goodwill and Other Intangible Assets (Details 3) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Mortgage servicing rights:        
Balance at beginning of period $ 2,851 $ 2,729 $ 2,840 $ 2,477
Additions 268 328 780 1,038
Amortization (291) (233) (792) (691)
Balance at end of period $ 2,828 $ 2,824 $ 2,828 $ 2,824