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Loans Receivable and Allowance for Loan Losses (Narrative) (Details)	3 Months Ended		12 Months Ended
	Mar. 31, 2022 USD ($) loan	Mar. 31, 2021 USD ($) loan	Dec. 31, 2021 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans, interest income lost	$ 246,000		$ 1,300,000
Loans Receivable >90 Days and Accruing	0		3,124,000
Loans acquired with deteriorated credit quality, fair value	$ 665,000		668,000
Troubled debt restructurings, number | loan	1	1
Troubled debt restructurings, amount	$ 115,388	$ 96,532
Troubled debt restructurings, subsequent default, amount	0	$ 127,449
Troubled debt restructuring, subsequent default, number | loan		1
Loans Receivable within 90 Days	9,232,000		14,889,000
Loans receivable, gross	2,432,369,000	$ 2,333,263,000	2,343,937,000
Less Than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable within 90 Days	3,300,000		3,800,000
Doubtful [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	0		0
Loss [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 0		$ 0

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Fair value at acquisition of acquired loans accounted for as debt securities with evidence of deterioration of credit quality.

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Number of financing receivables that have been modified by troubled debt restructurings.

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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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Reflects the amount of additional interest income that would have been recorded if impaired or nonperforming loans were instead current, in compliance with their original terms, and outstanding throughout the reporting period or since origination (if held for part of the period).

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