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SUMMARY OF PRINCIPAL ACCOUNTING POLICIES (Additional Information) (Details) - USD ($)
 12 Months Ended
Jan. 01, 2021
Jan. 01, 2020
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Restricted cash          
Restricted cash     $ 200,000 $ 41,800,000  
Inventories          
Inventory write-down     0 1,956,000 $ 327,000
Property, Plant and Equipment          
Interest expense capitalized     0 300,000 6,600,000
Prepaid land use rights          
Lease expense     800,000 700,000 600,000
Impairment of long-lived assets          
Long-lived asset impairment     0 0 0
Revenue recognition          
Accounts Receivable, Net, Current     0 0  
Government subsidies          
Unrestricted cash government subsidies     1,100,000 500,000 5,600,000
Government grants related to fixed assets     0 400,000 0
Foreign currency translation          
Aggregate amount of cash and cash equivalents and restricted cash denominated in RMB     1,002,000,000.0 117,500,000  
Allocated Share-based Compensation Expense     10,077,000 17,908,000 17,897,000
Contract with customer, liability     293,619,000 41,048,000  
Contract with customer, liability, revenue recognized $ 37,800,000 $ 33,000,000.0      
Shipping and Handling [Member]          
Shipping and handling          
Cost of Goods and Services Sold     $ 8,300,000 $ 8,600,000 $ 6,300,000