Summary of Significant Accounting Policies (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Accounting Policies [Line Items]
Federal Reserve Bank, reserve requirement	$ 49,200,000	$ 36,700,000
Other real estate owned	1,757,000	2,495,000
Residential Real Estate [Member]
Accounting Policies [Line Items]
Other real estate owned	215,000	400,000
Mortgage loans in process of foreclosure	$ 0	$ 0
Minimum [Member]
Accounting Policies [Line Items]
Intangible asset, useful life	5 years
Maximum [Member]
Accounting Policies [Line Items]
Intangible asset, useful life	12 years