Loans - Impaired Loans (Details)	3 Months Ended			6 Months Ended
	Jun. 30, 2022 USD ($) loan	Mar. 31, 2022 USD ($)	Jun. 30, 2021 USD ($) security	Jun. 30, 2022 USD ($) loan	Jun. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans without a specific valuation allowance - Recorded Balance	$ 6,159,000			$ 6,159,000		$ 7,245,000
Loans without a specific valuation allowance - Unpaid Principal Balance	6,682,000			6,682,000		7,781,000
Loans without a specific valuation allowance	0			0		0
Impaired Financing Receivable, with Related Allowance, Recorded Investment	3,083,000			3,083,000		3,695,000
Loans with a specific valuation allowance - Unpaid Principal Balance	3,083,000			3,083,000		3,751,000
Loans with a specific valuation allowance	1,551,000			1,551,000		1,461,000
Impaired Financing Receivable, Recorded Investment	9,242,000			9,242,000		10,940,000
Impaired Financing Receivable, Unpaid Principal Balance	9,765,000			9,765,000
Loans without a specific valuation allowance - Average Balance	7,019,000		$ 7,970,000	7,225,000	$ 7,200,000
Loans without a specific valuation allowance - Interest Income	25,000		9,000	33,000	27,000
Loans with a specific valuation allowance - Average Balance	3,511,000		8,668,000	3,741,000	6,949,000
Loans with a specific valuation allowance - Interest Income	28,000		24,000	45,000	36,000
Impaired Financing Receivable, Average Recorded Investment	10,530,000	$ 11,532,000	16,638,000	10,966,000	14,149,000
Impaired Financing Receivable, Interest Income, Accrual Method	53,000		$ 33,000	78,000	63,000
Other real estate owned	$ 0			$ 0		1,188,000
Mortgage loans in process of foreclosure, number of loans | loan	2			2
Mortgage loans in process of foreclosure, amount	$ 200,000			$ 200,000		1,000,000
Number of contracts classified as TDRs | security			1
Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	350,000			350,000		644,000
Loans with a specific valuation allowance - Unpaid Principal Balance	350,000			350,000		677,000
Loans with a specific valuation allowance	350,000			350,000		450,000
Loans without a specific valuation allowance - Average Balance	0		$ 259,000	0	259,000
Loans without a specific valuation allowance - Interest Income	0		0	0	9,000
Loans with a specific valuation allowance - Average Balance	390,000		839,000	508,000	677,000
Loans with a specific valuation allowance - Interest Income	0		0	0	0
Owner-occupied commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans without a specific valuation allowance - Recorded Balance	1,661,000			1,661,000		3,345,000
Loans without a specific valuation allowance - Unpaid Principal Balance	1,779,000			1,779,000		3,466,000
Loans without a specific valuation allowance	0			0		0
Loans without a specific valuation allowance - Average Balance	2,461,000		3,994,000	2,884,000	3,307,000
Loans without a specific valuation allowance - Interest Income	0		0	0	0
Loans with a specific valuation allowance - Average Balance	0		1,420,000	0	473,000
Loans with a specific valuation allowance - Interest Income	0		0	0	0
Single tenant lease financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	0			0		1,100,000
Loans with a specific valuation allowance - Unpaid Principal Balance	0			0		1,123,000
Loans with a specific valuation allowance	0			0		95,000
Loans without a specific valuation allowance - Average Balance	0		148,000	0	100,000
Loans without a specific valuation allowance - Interest Income	0		0	0	5,000
Loans with a specific valuation allowance - Average Balance	546,000		5,430,000	820,000	4,984,000
Loans with a specific valuation allowance - Interest Income	0		0	0	0
Healthcare finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	891,000			891,000		926,000
Loans with a specific valuation allowance - Unpaid Principal Balance	891,000			891,000		926,000
Loans with a specific valuation allowance	523,000			523,000		523,000
Loans without a specific valuation allowance - Average Balance	0		0	0	336,000
Loans without a specific valuation allowance - Interest Income	0		0	0	0
Loans with a specific valuation allowance - Average Balance	901,000		979,000	909,000	815,000
Loans with a specific valuation allowance - Interest Income	28,000		24,000	45,000	36,000
Small business lending
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans without a specific valuation allowance - Recorded Balance	854,000			854,000		959,000
Loans without a specific valuation allowance - Unpaid Principal Balance	1,078,000			1,078,000		1,193,000
Loans without a specific valuation allowance	0			0		0
Impaired Financing Receivable, with Related Allowance, Recorded Investment	1,842,000			1,842,000		1,025,000
Loans with a specific valuation allowance - Unpaid Principal Balance	1,842,000			1,842,000		1,025,000
Loans with a specific valuation allowance	678,000			678,000		393,000
Loans without a specific valuation allowance - Average Balance	867,000		1,123,000	848,000	970,000
Loans without a specific valuation allowance - Interest Income	0			0	0
Loans with a specific valuation allowance - Average Balance	1,674,000		0	1,504,000	0
Loans with a specific valuation allowance - Interest Income	0		0	0	0
Residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans without a specific valuation allowance - Recorded Balance	3,626,000			3,626,000		2,918,000
Loans without a specific valuation allowance - Unpaid Principal Balance	3,779,000			3,779,000		3,063,000
Loans without a specific valuation allowance	0			0		0
Loans without a specific valuation allowance - Average Balance	3,667,000		2,410,000	3,470,000	2,192,000
Loans without a specific valuation allowance - Interest Income	25,000		9,000	$ 33,000	13,000
Number of contracts classified as TDRs | loan				1
Financing receivable, troubled debt restructuring	700,000			$ 700,000
Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans without a specific valuation allowance - Recorded Balance	14,000			14,000		14,000
Loans without a specific valuation allowance - Unpaid Principal Balance	15,000			15,000		15,000
Loans without a specific valuation allowance	0			0		0
Loans without a specific valuation allowance - Average Balance	15,000		15,000	14,000	13,000
Loans without a specific valuation allowance - Interest Income	0		0	0	0
Other consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans without a specific valuation allowance - Recorded Balance	4,000			4,000		9,000
Loans without a specific valuation allowance - Unpaid Principal Balance	31,000			31,000		44,000
Loans without a specific valuation allowance	0			0		$ 0
Loans without a specific valuation allowance - Average Balance	9,000		21,000	9,000	23,000
Loans without a specific valuation allowance - Interest Income	$ 0		$ 0	$ 0	$ 0