Goodwill and Other Intangible Assets - Schedule of Mortgage Servicing Rights (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Goodwill And Intangible Assets Disclosure [Abstract]
Beginning Balance, Mortgage servicing rights	$ 666	$ 823
Mortgage servicing rights acquired as a result of the merger, Mortgage servicing rights	334
Mortgage servicing rights capitalized, Mortgage servicing rights	7	5
Amortization charged against servicing income, Mortgage servicing rights	(106)	(70)
Change in impairment reserve, Mortgage servicing rights		(30)
Ending Balance, Mortgage servicing rights	901	728
Beginning Balance, Valuation allowance		(30)
Change in impairment reserve, Valuation allowance	(10)	30
Ending Balance, Valudation allowance	(10)
Beginning Balance, Total	666	793
Mortgage servicing rights acquired as a result of the merger, Total	334
Mortgage servicing rights capitalized, Total	7	5
Amortization charged against servicing income, Total	(106)	(70)
Change in impairment reserve, Total	(10)
Ending Balance, Total	$ 891	$ 728