ACCUMULATED OTHER COMPREHENSIVE LOSS - Schedule of Accumulated Other Comprehensive Loss (Details) - USD ($)		3 Months Ended
		Mar. 31, 2024	Mar. 31, 2023
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
BALANCE		$ 1,447,226,000	$ 1,275,369,000
Reclassification to net income		8,000	253,000
Other comprehensive loss		(2,708,000)	2,975,000
BALANCE		1,484,900,000	1,299,465,000
Unrealized gain (loss) on available-for-sale securities [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
BALANCE		858,000	(7,887,000)
Other comprehensive gain (loss) before reclassification		(2,666,000)	2,627,000
Reclassification to net income	[1]	0	0
Other comprehensive loss		(2,666,000)	2,627,000
BALANCE		(1,808,000)	(5,260,000)
Net unrealized gain (loss) on retirement plan [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
BALANCE	[2]	(1,808,000)	(10,011,000)
Other comprehensive gain (loss) before reclassification	[2]	0	0
Reclassification to net income	[1],[2]	8,000	253,000
Other comprehensive loss	[2]	8,000	253,000
BALANCE	[2]	(1,800,000)	(9,758,000)
Change in cumulative foreign currency translation adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
BALANCE		(136,000)	(554,000)
Other comprehensive gain (loss) before reclassification		(50,000)	95,000
Reclassification to net income	[1]	0	0
Other comprehensive loss		(50,000)	95,000
BALANCE		(186,000)	(459,000)
Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
BALANCE		(1,086,000)	(18,452,000)
Other comprehensive gain (loss) before reclassification		(2,716,000)	2,722,000
Reclassification to net income	[1]	8,000	253,000
Other comprehensive loss		(2,708,000)	2,975,000
BALANCE		$ (3,794,000)	$ (15,477,000)

[1] The Company reclassified amortization of prior service cost and actuarial loss for its retirement plan from accumulated other comprehensive loss to net income of $8,000 and $253,000 for the three months ended March 31, 2024 and 2023, respectively.

[2] Refer to Note 17: Retirement Plan Benefit Liability.