RELATED PARTY BALANCES AND TRANSACTIONS (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025	Dec. 31, 2025
Related Party Transaction [Line Items]
Purchases of materials	$ 24,968	$ 22,283	$ 45,111	$ 32,999
Service fee charged by	158,301	110,911	282,326	200,708
Ninebell
Related Party Transaction [Line Items]
Purchases of materials	21,071	18,201	37,772	27,013
Shengyi
Related Party Transaction [Line Items]
Purchases of materials	3,897	4,082	7,339	5,986
Related Party
Related Party Transaction [Line Items]
Advances to related parties	163		163		$ 2,500
Accounts payable	29,799		29,799		32,060
Service fee charged by	19,569	16,518	32,052	25,917
Related Party | Ninebell
Related Party Transaction [Line Items]
Advances to related parties	163		163		163
Accounts payable	15,938		15,938		20,353
Related Party | Ninebell | Rental Fee Charged
Related Party Transaction [Line Items]
Rental fee charged to	47	0	47	0
Related Party | Shengyi
Related Party Transaction [Line Items]
Advances to related parties	0		0		2,337
Accounts payable	13,861		13,861		$ 11,707
Service fee charged by	$ 266	$ 1,626	$ 316	$ 1,899