MERCHANDISE TRUSTS - Aging of Unrealized Losses on Investments in Fixed Maturities and Equity Securities Held in Merchandise Trusts (Detail) - Variable Interest Entity, Primary Beneficiary - Merchandise Trusts - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Investments, Unrealized Loss Position [Line Items]
Less than 12 months Unrealized Losses	$ 5,218	$ 6,463
12 Months or more Unrealized Losses	2,006	1
Total Unrealized Losses	7,224	6,464
Less than 12 months Fair Value	49,918	46,643
12 Months or more Fair Value	1,893	918
Total Fair Value	51,811	47,561
Fixed maturities
Investments, Unrealized Loss Position [Line Items]
12 Months or more Fair Value		917
Total Fair Value		917
Fixed maturities | U.S. governmental securities
Investments, Unrealized Loss Position [Line Items]
12 Months or more Fair Value		297
Total Fair Value		297
Fixed maturities | Corporate debt securities
Investments, Unrealized Loss Position [Line Items]
12 Months or more Fair Value		620
Total Fair Value		620
Mutual funds - debt securities
Investments, Unrealized Loss Position [Line Items]
Less than 12 months Unrealized Losses	646	15
12 Months or more Unrealized Losses	1
Total Unrealized Losses	647	15
Less than 12 months Fair Value	5,448	890
12 Months or more Fair Value	2
Total Fair Value	5,450	890
Mutual funds - equity securities
Investments, Unrealized Loss Position [Line Items]
Less than 12 months Unrealized Losses	7
Total Unrealized Losses	7
Less than 12 months Fair Value	55
Total Fair Value	55
Other investment funds
Investments, Unrealized Loss Position [Line Items]
Less than 12 months Unrealized Losses	4,530	4,398
Total Unrealized Losses	4,530	4,398
Less than 12 months Fair Value	44,033	42,645
Total Fair Value	44,033	42,645
Equity securities
Investments, Unrealized Loss Position [Line Items]
Less than 12 months Unrealized Losses	35	2,050
12 Months or more Unrealized Losses	2,005	1
Total Unrealized Losses	2,040	2,051
Less than 12 months Fair Value	382	3,108
12 Months or more Fair Value	1,891	1
Total Fair Value	$ 2,273	$ 3,109