SUPPLEMENTAL STOCKHOLDERS’ EQUITY INFORMATION - Changes in Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Other comprehensive income before reclassifications, before tax	$ 3,509
Amounts reclassified from accumulated other comprehensive loss, before tax	4,405
Income tax expense	2,080
Net current-period other comprehensive income, net of tax	5,834
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	(2,762)
Other comprehensive income before reclassifications, before tax	2,488
Amounts reclassified from accumulated other comprehensive loss, before tax	0
Income tax expense	654
Net current-period other comprehensive income, net of tax	1,834
Balance, end of period	(928)
Funded Status of Benefit Plans
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	(363,874)
Other comprehensive income before reclassifications, before tax	0
Amounts reclassified from accumulated other comprehensive loss, before tax	4,405
Income tax expense	1,158
Net current-period other comprehensive income, net of tax	3,247
Balance, end of period	(360,627)
Net Unrealized Gain/(Loss) on Available-For-Sale Securities
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	830
Other comprehensive income before reclassifications, before tax	1,021
Amounts reclassified from accumulated other comprehensive loss, before tax	0
Income tax expense	268
Net current-period other comprehensive income, net of tax	753
Balance, end of period	1,583
Total Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	(365,806)
Net current-period other comprehensive income, net of tax	5,834	$ 503
Balance, end of period	$ (359,972)