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MERCHANDISE TRUSTS - Contractual Maturities of Debt Securities Held in Merchandise Trusts (Detail) - Variable Interest Entity, Primary Beneficiary - Merchandise Trusts - Fixed maturities - USD ($)
$ in Thousands
Jun. 30, 2020
Dec. 31, 2019
Investments Classified by Contractual Maturity Date [Line Items]    
Less than 1 year $ 19,858 $ 213
1 year through 5 years 16,045 624
6 years through 10 years 4,481 209
More than 10 years 12 13
U.S. governmental securities    
Investments Classified by Contractual Maturity Date [Line Items]    
Less than 1 year   112
1 year through 5 years 110 78
6 years through 10 years 179 193
More than 10 years 12 13
Corporate debt securities    
Investments Classified by Contractual Maturity Date [Line Items]    
Less than 1 year 3,824 101
1 year through 5 years 6,566 546
6 years through 10 years 4,302 $ 16
Other Debt Securities    
Investments Classified by Contractual Maturity Date [Line Items]    
Less than 1 year 16,034  
1 year through 5 years $ 9,369