Quarterly report pursuant to Section 13 or 15(d)

GOODWILL AND PURCHASED INTANGIBLE ASSETS - Additional Information (Details)

v3.20.4
GOODWILL AND PURCHASED INTANGIBLE ASSETS - Additional Information (Details)
3 Months Ended 6 Months Ended 9 Months Ended
Jun. 30, 2020
USD ($)
Dec. 31, 2020
segment
reporting_unit
Mar. 31, 2020
USD ($)
Goodwill [Line Items]      
Number of reportable segments | segment   4  
Number of reporting units | reporting_unit   6  
Impairment of intangible assets     $ 0
Specialty Semiconductor Process      
Goodwill [Line Items]      
Goodwill impairment $ 144,200,000    
PCB and Display      
Goodwill [Line Items]      
Goodwill impairment $ 112,500,000