Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Financial Assets:
Available-for-sale securities	$ 577,820	$ 564,839	$ 564,839
Other investments, at cost	1,879	1,785
Financial liabilities:
Non-interest bearing demand	467,265	444,688
Interest bearing demand deposits and money market accounts	658,932	619,057
Savings	150,849	143,765
Time deposits	153,702	153,781
Fair Value, Inputs, Level 1 [Member]
Financial Assets:
Cash and short term investments	100,792	69,022
Available-for-sale securities	36,371	39,829
Other investments, at cost
Loans held for sale
Net loans receivable
Accrued interest	3,838	3,927
Financial liabilities:
Non-interest bearing demand
Interest bearing demand deposits and money market accounts
Savings
Time deposits
Total deposits
Federal Home Loan Bank Advances
Short term borrowings
Junior subordinated debentures
Accrued interest payable	334	404
Fair Value, Inputs, Level 2 [Member]
Financial Assets:
Cash and short term investments
Available-for-sale securities	541,449	525,010
Other investments, at cost
Loans held for sale	12,095	7,120
Net loans receivable
Accrued interest
Financial liabilities:
Non-interest bearing demand	467,265	444,688
Interest bearing demand deposits and money market accounts	658,932	619,057
Savings	150,849	143,765
Time deposits	153,871	154,030
Total deposits	1,430,917	1,361,540
Federal Home Loan Bank Advances
Short term borrowings	68,060	54,216
Junior subordinated debentures	15,653	15,015
Accrued interest payable
Fair Value, Inputs, Level 3 [Member]
Financial Assets:
Cash and short term investments
Available-for-sale securities
Other investments, at cost	1,879	1,785
Loans held for sale
Net loans receivable	836,206	851,822
Accrued interest
Financial liabilities:
Non-interest bearing demand
Interest bearing demand deposits and money market accounts
Savings
Time deposits
Total deposits
Federal Home Loan Bank Advances
Short term borrowings
Junior subordinated debentures
Accrued interest payable
Reported Value Measurement [Member]
Financial Assets:
Cash and short term investments	100,792	69,022
Available-for-sale securities	577,820	564,839
Other investments, at cost	1,879	1,785
Loans held for sale	12,095	7,120
Net loans receivable	864,734	852,523
Accrued interest	3,838	3,927
Financial liabilities:
Non-interest bearing demand	467,265	444,688
Interest bearing demand deposits and money market accounts	658,932	619,057
Savings	150,849	143,765
Time deposits	153,702	153,781
Total deposits	1,430,748	1,361,291
Federal Home Loan Bank Advances
Short term borrowings	68,060	54,216
Junior subordinated debentures	14,964	14,964
Accrued interest payable	334	404
Estimate of Fair Value Measurement [Member]
Financial Assets:
Cash and short term investments	100,792	69,022
Available-for-sale securities	577,820	564,839
Other investments, at cost	1,879	1,785
Loans held for sale	12,095	7,120
Net loans receivable	836,206	851,822
Accrued interest	3,838	3,927
Financial liabilities:
Non-interest bearing demand	467,265	444,688
Interest bearing demand deposits and money market accounts	658,932	619,057
Savings	150,849	143,765
Time deposits	153,871	154,030
Total deposits	1,430,917	1,361,540
Federal Home Loan Bank Advances
Short term borrowings	68,060	54,216
Junior subordinated debentures	15,653	15,015
Accrued interest payable	$ 334	$ 404

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Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Fair value portion of deposit liabilities held by the entity, including, but not limited to, foreign and domestic, interest and noninterest bearing, demand deposits, saving deposits, negotiable orders of withdrawal (NOW) and time deposits.

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Amount of deposits in accounts that offer many of the same services as checking accounts although transactions may be somewhat more limited, share some of the characteristics of a money market fund and are insured by the Federal government, also known as money market accounts. Also includes amount of deposits in interest-bearing transaction accounts at banks or savings and loans, that are restricted in regard to ownership and can usually only be held by individuals, nonprofit entities and governments. Negotiable order of withdrawal accounts differ from money market demand accounts as they typically have higher reserve requirements and no limit on the number of checks that can be written.

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Amount of interest bearing deposits with no stated maturity, which may include passbook and statement savings accounts and money-market deposit accounts (MMDAs).

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Fair value of subordinated debt obligations including, but not limited to, subordinated loan, subordinated bond, subordinated debenture or junior debt.

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-Publisher FASB
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Fair value portion of borrowing from Federal Home Loan Bank (FHLBank).

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Amount of interest payable on debt, including, but not limited to, trade payables.

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Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable.

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-Publisher FASB
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-Topic 210
-SubTopic 10
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Fair value portion of loans held-for-sale including, but not limited to, mortgage loans and finance receivables.

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Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Amount of domestic noninterest-bearing deposits held by the entity, which may include demand deposits, checking, brokered and retail deposits.

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This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents the amount of short-term debt existing as of the balance sheet date.

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Amount of time deposit liabilities, including certificates of deposit.

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