Loans, Loans Portfolio by Credit Quality Indicators (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of deferred origination costs (fees)	$ 1,317,765	$ 1,299,421
Commercial and industrial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of deferred origination costs (fees)	96,439	99,596
Commercial, secured by real estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of deferred origination costs (fees)	834,823	842,209
Residential real estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of deferred origination costs (fees)	342,033	310,085
Consumer [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of deferred origination costs (fees)	35,371	37,052
Agricultural [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of deferred origination costs (fees)	8,730	10,116
Other [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of deferred origination costs (fees)	369	363
Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of deferred origination costs (fees)	1,277,459	1,262,570
Pass [Member] | Commercial and industrial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of deferred origination costs (fees)	96,218	97,391
Pass [Member] | Commercial, secured by real estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of deferred origination costs (fees)	797,440	811,558
Pass [Member] | Residential real estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of deferred origination costs (fees)	339,331	306,092
Pass [Member] | Consumer [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of deferred origination costs (fees)	35,371	37,050
Pass [Member] | Agricultural [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of deferred origination costs (fees)	8,730	10,116
Pass [Member] | Other [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of deferred origination costs (fees)	369	363
OAEM [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of deferred origination costs (fees)	17,079	10,284
OAEM [Member] | Commercial and industrial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of deferred origination costs (fees)	0	0
OAEM [Member] | Commercial, secured by real estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of deferred origination costs (fees)	17,079	9,279
OAEM [Member] | Residential real estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of deferred origination costs (fees)	0	1,005
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)	23,227	26,567
Substandard [Member] | Commercial and industrial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of deferred origination costs (fees)	221	2,205
Substandard [Member] | Commercial, secured by real estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of deferred origination costs (fees)	20,304	21,372
Substandard [Member] | Residential real estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of deferred origination costs (fees)	2,702	2,988
Substandard [Member] | Consumer [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of deferred origination costs (fees)	0	2
Substandard [Member] | Agricultural [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of deferred origination costs (fees)	0	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