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Goodwill and Other Intangible Assets - Estimated Amortization Expense of Mortgage Servicing Rights (Details)
$ in Thousands
Mar. 31, 2016
USD ($)
Finite-Lived Intangible Assets [Line Items]  
Remainder of 2016 $ 1,385
2017 1,544
2018 1,170
2019 847
2020 577
Thereafter 734
Mortgage Servicing Rights [Member]  
Finite-Lived Intangible Assets [Line Items]  
Remainder of 2016 763
2017 900
2018 755
2019 629
2020 521
Thereafter $ 2,271