Loans, Loans Portfolio by Credit Quality Indicators (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of deferred origination costs (fees)	$ 1,340,160	$ 1,243,451
Commercial and industrial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of deferred origination costs (fees)	123,185	78,371
Commercial, secured by real estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of deferred origination costs (fees)	842,906	804,154
Residential real estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of deferred origination costs (fees)	328,080	322,855
Consumer [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of deferred origination costs (fees)	36,648	25,355
Agricultural [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of deferred origination costs (fees)	8,938	11,523
Other [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of deferred origination costs (fees)	403	1,193
Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of deferred origination costs (fees)	1,311,831	1,222,688
Pass [Member] | Commercial and industrial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of deferred origination costs (fees)	122,186	76,236
Pass [Member] | Commercial, secured by real estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of deferred origination costs (fees)	821,099	789,319
Pass [Member] | Residential real estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of deferred origination costs (fees)	322,572	319,075
Pass [Member] | Consumer [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of deferred origination costs (fees)	36,646	25,342
Pass [Member] | Agricultural [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of deferred origination costs (fees)	8,925	11,523
Pass [Member] | Other [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of deferred origination costs (fees)	403	1,193
OAEM [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of deferred origination costs (fees)	11,412	3,507
OAEM [Member] | Commercial and industrial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of deferred origination costs (fees)	0	233
OAEM [Member] | Commercial, secured by real estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of deferred origination costs (fees)	9,333	3,007
OAEM [Member] | Residential real estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of deferred origination costs (fees)	2,079	267
OAEM [Member] | Consumer [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of deferred origination costs (fees)	0	0
OAEM [Member] | Agricultural [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of deferred origination costs (fees)	0	0
OAEM [Member] | Other [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of deferred origination costs (fees)	0	0
Substandard [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of deferred origination costs (fees)	16,917	17,256
Substandard [Member] | Commercial and industrial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of deferred origination costs (fees)	999	1,902
Substandard [Member] | Commercial, secured by real estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of deferred origination costs (fees)	12,474	11,828
Substandard [Member] | Residential real estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of deferred origination costs (fees)	3,429	3,513
Substandard [Member] | Consumer [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of deferred origination costs (fees)	2	13
Substandard [Member] | Agricultural [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of deferred origination costs (fees)	13	0
Substandard [Member] | Other [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of deferred origination costs (fees)	0	0
Doubtful [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of deferred origination costs (fees)	0	0
Doubtful [Member] | Commercial and industrial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of deferred origination costs (fees)	0	0
Doubtful [Member] | Commercial, secured by real estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of deferred origination costs (fees)	0	0
Doubtful [Member] | Residential real estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of deferred origination costs (fees)	0	0
Doubtful [Member] | Consumer [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of deferred origination costs (fees)	0	0
Doubtful [Member] | Agricultural [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of deferred origination costs (fees)	0	0
Doubtful [Member] | Other [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of deferred origination costs (fees)	$ 0	$ 0