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Goodwill and Intangible Assets - Schedule of Servicing Asset at Amortized Cost (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]    
Balance at beginning of year $ 2,811 $ 2,849
Additions 543 931
Amortization (859) (969)
Balance at end of year $ 2,495 $ 2,811