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GOODWILL AND INTANGIBLE ASSETS - Summary of Intangible Amortization Expense Estimated (Detail)
$ in Thousands
Sep. 30, 2021
USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]  
Fiscal year ending December 31, 2021 $ 3,694
Fiscal year ending December 31, 2022 14,007
Fiscal year ending December 31, 2023 12,970
Fiscal year ending December 31, 2024 12,634
Fiscal year ending December 31, 2025 11,945
Thereafter $ 37,658