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Goodwill and Other Intangible Assets - Estimated Amortization Expense of Servicing Rights (Details)
$ in Thousands
Mar. 31, 2017
USD ($)
Finite-Lived Intangible Assets [Line Items]  
Remainder of 2017 $ 2,085
2018 2,114
2019 1,565
2020 1,200
2021 923
Thereafter 1,534
Servicing Rights [Member]  
Finite-Lived Intangible Assets [Line Items]  
Remainder of 2017 931
2018 818
2019 711
2020 616
2021 533
Thereafter $ 2,893