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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Allowance for Credit Losses - Additional Information (Details) - ASU 2016-13
Dec. 31, 2020
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]  
Change in Accounting Principle, Accounting Standards Update, Adopted [true false] true
Change in Accounting Principle, Accounting Standards Update, Adoption Date Jan. 01, 2020