ACCUMULATED OTHER COMPREHENSIVE LOSS - Schedule of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
BALANCE		$ 1,099,914	$ 912,714	$ 811,449
Other comprehensive gain (loss) before reclassification		(2,254)	13,348	(21,578)
Plan amendment cost		0	(283)
Reclassification to net income	[1]	2,037	4,719	2,556
Other comprehensive loss		(217)	17,784	(19,022)
BALANCE		1,275,369	1,099,914	912,714
Unrealized gain (loss) on available-for-sale securities [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
BALANCE		(142)	91	191
Other comprehensive gain (loss) before reclassification		(7,745)	(233)	(100)
Plan amendment cost		0	0
Reclassification to net income	[1]	0	0	0
Other comprehensive loss		(7,745)	(233)	(100)
BALANCE		(7,887)	(142)	91
Net unrealized gain (loss) on retirement plan [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
BALANCE	[2]	(18,019)	(36,075)	(17,167)
Other comprehensive gain (loss) before reclassification	[2]	5,971	13,620	(21,464)
Plan amendment cost	[2]	0	(283)
Reclassification to net income	[1],[2]	(2,037)	4,719	2,556
Other comprehensive loss	[2]	8,008	18,056	(18,908)
BALANCE	[2]	(10,011)	(18,019)	(36,075)
Change in cumulative foreign currency translation adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
BALANCE		(74)	(35)	(21)
Other comprehensive gain (loss) before reclassification		(480)	(39)	(14)
Plan amendment cost		0	0
Reclassification to net income	[1]	0	0	0
Other comprehensive loss		(480)	(39)	(14)
BALANCE		(554)	(74)	(35)
Accumulated Other Comprehensive Loss [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
BALANCE		(18,235)	(36,019)	(16,997)
Other comprehensive loss		(217)	17,784	(19,022)
BALANCE		$ (18,452)	$ (18,235)	$ (36,019)

[1] The Company reclassified amortization of prior service cost, actuarial loss and plan amendment cost for its retirement plan from accumulated other comprehensive loss to net income of $2.0 million, $4.7 million and $2.6 million for the years ended December 31, 2022, 2021 and 2020, respectively.

[2] Refer to Note 17: Employee Retirement Plans