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INCOME TAXES - Additional Information (Details) - USD ($)
$ in Thousands
 12 Months Ended
Oct. 30, 2018
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Jan. 13, 2022
Income Taxes [Line Items]            
Long-term asset   $ 135,710 $ 103,341      
Withholding and interest for licencing and royalty payments $ 13,200          
Withholding and interest for licencing and royalty payments period 3 years          
Current income tax expense   $ 25,212 $ 19,262 $ 16,514    
State and foreign income tax returns subject to examination period minimum (in years)   3 years 3 years      
State and foreign income tax returns subject to examination period maximum (in years)   4 years        
Subsequent Event [Member]            
Income Taxes [Line Items]            
Estimated settlement amounts due (refunds) from withholding taxes           $ 13,200
Reduction of Korean Withholding Taxes [Member]            
Income Taxes [Line Items]            
Reduction of deferred tax asset for foreign tax credits and R&D   $ (20,700) $ (20,700)      
Korean Government [Member]            
Income Taxes [Line Items]            
Estimated settlement amounts due (refunds) from withholding taxes   36,900 36,900      
U.S.Federal Government [Member]            
Income Taxes [Line Items]            
Estimated settlement amounts due (refunds) from withholding taxes   16,200 16,200      
South Korea [Member]            
Income Taxes [Line Items]            
Current income tax expense   14,900 14,900 $ 14,900 $ 14,900  
Allocation of Withholding to Non-Korean Patents [Member]            
Income Taxes [Line Items]            
Long-term asset   53,200 40,100      
Allocation of Withholding to Non-Korean Patents [Member] | U.S.Federal Government [Member]            
Income Taxes [Line Items]            
Estimated settlement amounts due (refunds) from withholding taxes   $ 31,600 $ 32,700