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Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
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Other Commitments [Line Items] |  |
Outstanding loan commitments | $ 475,100 | $ 126,000
Future commitments outstanding related to investments | 8,300 |
SBIC [Member] |  |
Other Commitments [Line Items] |  |
Future commitments outstanding related to investments | 11,400 |
Other Liabilities [Member] |  |
Other Commitments [Line Items] |  |
Reserves for unfunded commitments to borrowers | 962 | 0
Performance Stand-by Letters of Credit [Member] |  |
Other Commitments [Line Items] |  |
Outstanding performance stand-by letters of credit | 655 | 0
Financial Stand-by Letters of Credit [Member] |  |
Other Commitments [Line Items] |  |
Outstanding performance stand-by letters of credit | $ 4,500 | $ 6,100

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