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Senior Debt - Summary of Debt (Parenthetical) (Detail) - Term Loan [Member] $ in Millions | 12 Months Ended
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Dec. 31, 2021 USD ($)
Debt Instrument [Line Items] |
Frequency of periodic payment | quarterly
Term loans, year of maturity | Sep. 30, 2026
Debt Instrument, Redemption, Through September 2023 [Member] |
Debt Instrument [Line Items] |
Outstanding borrowings, quarterly principal installments payable amount | $ 0.6
Debt Instrument, Redemption, Through September 2025 [Member] |
Debt Instrument [Line Items] |
Outstanding borrowings, quarterly principal installments payable amount | 0.8
Debt Instrument, Redemption, Thereafter [Member] |
Debt Instrument [Line Items] |
Outstanding borrowings, quarterly principal installments payable amount | $ 1.1

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