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	Mar. 31, 2022	Dec. 31, 2021
Investments, Unrealized Loss Position [Line Items]
Less than 12 months Unrealized Losses	$ 4,376	$ 6,463
12 Months or more Unrealized Losses	2,005	1
Total Unrealized Losses	6,381	6,464
Less than 12 months Fair Value	53,353	46,643
12 Months or more Fair Value	1,893	918
Total Fair Value	55,246	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	303	15
Total Unrealized Losses	303	15
Less than 12 months Fair Value	5,359	890
12 Months or more Fair Value	2
Total Fair Value	5,361	890
Mutual funds - equity securities
Investments, Unrealized Loss Position [Line Items]
Less than 12 months Fair Value	1
Total Fair Value	1
Other investment funds
Investments, Unrealized Loss Position [Line Items]
Less than 12 months Unrealized Losses	3,908	4,398
Total Unrealized Losses	3,908	4,398
Less than 12 months Fair Value	47,530	42,645
Total Fair Value	47,530	42,645
Equity securities
Investments, Unrealized Loss Position [Line Items]
Less than 12 months Unrealized Losses	165	2,050
12 Months or more Unrealized Losses	2,005	1
Total Unrealized Losses	2,170	2,051
Less than 12 months Fair Value	463	3,108
12 Months or more Fair Value	1,891	1
Total Fair Value	$ 2,354	$ 3,109