ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Accumulated Other Comprehensive Income (Loss)
Balance at beginning of period			$ 1,048,384,000
Other comprehensive income (loss)	$ 1,914,000	$ (3,225,000)	2,418,000	$ (3,971,000)
Balance at end of period	1,038,245,000		1,038,245,000
Tax benefit or provision on accumulated other comprehensive loss	0	0	0	0
Foreign Currency Translation Adjustment
Accumulated Other Comprehensive Income (Loss)
Balance at beginning of period	(713,000)	2,506,000	(1,172,000)	3,309,000
Other comprehensive income (loss)	1,835,000	(2,899,000)	2,294,000	(3,702,000)
Balance at end of period	1,122,000	(393,000)	1,122,000	(393,000)
Unrealized Gains on Available-For-Sale Debt Securities
Accumulated Other Comprehensive Income (Loss)
Balance at beginning of period	2,000		0
Other comprehensive income (loss)	(2,000)		0
Balance at end of period	0		0
Accumulated Other Comprehensive (Loss) Income
Accumulated Other Comprehensive Income (Loss)
Balance at beginning of period	(711,000)	2,506,000	(1,172,000)	3,309,000
Other comprehensive income (loss)	1,833,000	(2,899,000)	2,294,000	(3,702,000)
Balance at end of period	$ 1,122,000	$ (393,000)	$ 1,122,000	$ (393,000)