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Fair Value Measurements - Nonrecurring (Details) - USD ($) | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Mar. 31, 2022 | Dec. 31, 2021 | Mar. 31, 2021 | Dec. 31, 2020
Assets and liabilities measured at fair value |  |  |  |
Valuation allowance | $ 11,600,000 |  |  |
Carrying value of other real estate owned | 2,374,000 | $ 2,356,000 | $ 2,163,000 | $ 2,474,000
OREO Valuation allowance | 1,179,000 | 1,179,000 | $ 1,649,000 | $ 1,643,000
Impaired Loans [Member] |  |  |  |
Assets and liabilities measured at fair value |  |  |  |
Valuation allowance |  | 18,500,000 |  |
Impaired Loans [Member] | Reported Value Measurement [Member] |  |  |  |
Assets and liabilities measured at fair value |  |  |  |
Increase (decrease) of specific allocations within the provision for loan losses |  | 2,700,000 |  |
Fair Value, Measurements, Nonrecurring [Member] |  |  |  |
Assets and liabilities measured at fair value |  |  |  |
Total | 24,364,000 | 15,494,000 |  |
Fair Value, Measurements, Nonrecurring [Member] | Impaired Loans [Member] |  |  |  |
Assets and liabilities measured at fair value |  |  |  |
Total | 21,990,000 | 13,138,000 |  |
Valuation allowance | 11,600,000 | 5,400,000 |  |
Increase (decrease) of specific allocations within the provision for loan losses | 6,200,000 |  |  |
Fair Value, Measurements, Nonrecurring [Member] | Impaired Loans [Member] | Reported Value Measurement [Member] |  |  |  |
Assets and liabilities measured at fair value |  |  |  |
Total | 33,600,000 |  |  |
Fair Value, Measurements, Nonrecurring [Member] | Other Real Estate Owned [Member] |  |  |  |
Assets and liabilities measured at fair value |  |  |  |
Total | 2,374,000 | 2,356,000 |  |
Carrying value of other real estate owned | 2,400,000 | 2,400,000 |  |
Outstanding balance | 3,700,000 | 3,700,000 |  |
OREO Valuation allowance | 1,200,000 | 1,200,000 |  |
OREO participations | 131,000 | 131,000 |  |
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |
Assets and liabilities measured at fair value |  |  |  |
Total | 24,364,000 | 15,494,000 |  |
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member] | Impaired Loans [Member] |  |  |  |
Assets and liabilities measured at fair value |  |  |  |
Total | 21,990,000 | 13,138,000 |  |
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member] | Other Real Estate Owned [Member] |  |  |  |
Assets and liabilities measured at fair value |  |  |  |
Total | $ 2,374,000 | $ 2,356,000 |  |

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