Loans and Allowance - (Details)	3 Months Ended
	Mar. 31, 2020 USD ($) borrower	Mar. 31, 2019 borrower	Dec. 31, 2019 USD ($)
Financing Receivable, Impaired [Line Items]
Loans outstanding	$ 500,000
Number of borrowers | borrower	14	19
30-89 Days Past Due
Financing Receivable, Impaired [Line Items]
Loans outstanding	$ 1,353,000		$ 822,000
30-89 Days Past Due | Substandard
Financing Receivable, Impaired [Line Items]
Loans outstanding	$ 500,000
Consumer
Financing Receivable, Impaired [Line Items]
Number of borrowers | borrower	1
Amount of consumer and indirect loans, outstanding	$ 40,311
Amount of consumer and indirect loans, specific reserves	10,882
Consumer | 30-89 Days Past Due
Financing Receivable, Impaired [Line Items]
Loans outstanding	46,000		$ 74,000
Commercial Real Estate | 30-89 Days Past Due
Financing Receivable, Impaired [Line Items]
Loans outstanding	735,000
Commercial Real Estate | 30-89 Days Past Due | Substandard
Financing Receivable, Impaired [Line Items]
Loans outstanding	$ 505,000