MONEY MARKET INVESTMENTS (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash and Cash Equivalents [Line Items]
Time deposits with other financial institutions	$ 300	$ 300
Other short-term investments	2,382	60,272
Money Market Funds At Carrying Value	$ 2,682	$ 60,572	$ 97,708
Weighted average interest rate, time deposits with other financial institutions	0.05%	0.45%
Other short-term investments [Member]
Cash and Cash Equivalents [Line Items]
Other short-term investments	$ 1,182	$ 1,181
Weighted average rate, other short-term investments	0.15%	0.11%
Overnight deposits with other financial institutions [Member]
Cash and Cash Equivalents [Line Items]
Other short-term investments	$ 1,200	$ 59,091
Weighted average rate, other short-term investments	0.07%	0.15%