Goodwill and Other Intangible Assets - Schedule of Mortgage Servicing Rights (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Goodwill And Intangible Assets Disclosure [Abstract]
Beginning Balance, Mortgage servicing rights	$ 666	$ 823	$ 842
Mortgage servicing rights acquired as a result of the merger, Mortgage servicing rights	334
Mortgage servicing rights capitalized, Mortgage servicing rights	618	20	132
Amortization charged against servicing income, Mortgage servicing rights	(271)	(147)	(151)
Change in impairment reserve, Mortgage servicing rights		(30)
Ending Balance, Mortgage servicing rights	1,347	666	823
Beginning Balance, Valuation allowance		(30)	(30)
Change in impairment reserve, Valuation allowance	(26)	30
Ending Balance, Valudation allowance	(26)		(30)
Beginning Balance, Total	666	793	812
Mortgage servicing rights acquired as a result of the merger, Total	334
Mortgage servicing rights capitalized, Total	618	20	132
Amortization charged against servicing income, Total	(271)	(147)	(151)
Change in impairment reserve, Total	(26)
Ending Balance, Total	$ 1,321	$ 666	$ 793