INCOME TAXES - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Deferred tax assets:
Net operating loss carryforwards	$ 124,640	$ 101,771
Inventory	12,272	8,385
Warranty	6,844	6,347
Employee benefits and related costs	8,001	8,352
Prepaid royalties	410	1,006
Interest limitation	33,608	28,834
Lease liability	30,323	5,138
Intangible assets	12,463	4,732
Foreign Tax Credit	0	2,318
Other	8,296	7,401
Deferred tax assets	236,857	174,284
Deferred tax liabilities:
Fixed assets	(30,765)	(13,939)
Lease assets	(28,958)	(5,181)
Pension	(7,677)	(6,060)
Other	(3,529)	(7,292)
Deferred tax liabilities	(70,929)	(32,472)
Subtotal	165,928	141,812
Valuation allowance	(161,351)	(106,496)
Net deferred tax asset	$ 4,577	$ 35,316