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Borrowings - Long-term Debt (Details) - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2021 | Dec. 31, 2020 | Mar. 31, 2022 | Dec. 31, 2021
Long-term debt |  |  |  |
Long-term debt |  |  | $ 42,881 | $ 46,056
FHLB advances |  |  |  |
Long-term debt |  |  |  |
Notes payable original maturity term | 5 years | 5 years |  |
Interest rate (as a percent) |  |  | 3.04% | 3.04%
Notes payable, FHLB, original maturity of 5 years, collateralized by FHLB deposits, residential and commercial real estate loans and FHLB stock |  |  |  |
Long-term debt |  |  |  |
Long-term debt |  |  | $ 3,881 | $ 4,056
Term Loan |  |  |  |
Long-term debt |  |  |  |
Long-term debt |  |  | $ 39,000 | $ 42,000

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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1B -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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