CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Statement of Comprehensive Income [Abstract]
Net Income (Loss)	$ 64,444	$ 56,853
OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX:
Unrealized gain (loss) on available-for-sale securities, net of tax of $317 and none, respectively	1,320	(2,666)
Amortization of prior service cost and actuarial loss for retirement plan included in net periodic pension costs, net of tax of ($2) and ($3), respectively	4	8
Change in cumulative foreign currency translation adjustment	25	(50)
TOTAL OTHER COMPREHENSIVE INCOME (LOSS)	1,349	(2,708)
COMPREHENSIVE INCOME	$ 65,793	$ 54,145