Quarterly report pursuant to Section 13 or 15(d)

EQUITY, LONG-TERM INCENTIVE COMPENSATION PLANS AND NON-CONTROLLING INTEREST - Non-controlling Interest (Details)

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EQUITY, LONG-TERM INCENTIVE COMPENSATION PLANS AND NON-CONTROLLING INTEREST - Non-controlling Interest (Details) - USD ($)
$ in Thousands
1 Months Ended 9 Months Ended
Feb. 28, 2021
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Noncontrolling Interest [Line Items]        
Proceeds from sale of business   $ 16,833 $ 0  
Gain (loss) from sale of business   $ 4,422 $ 0  
Disposal Group, Disposed of by Sale, Not Discontinued Operations | PixCell        
Noncontrolling Interest [Line Items]        
Proceeds from sale of business $ 20,200      
Gain (loss) from sale of business $ 4,400      
Orbograph        
Noncontrolling Interest [Line Items]        
Non-controlling interest, ownership   94.00%    
OLTS        
Noncontrolling Interest [Line Items]        
Non-controlling interest, ownership   97.00%    
PixCell        
Noncontrolling Interest [Line Items]        
Non-controlling interest, ownership       52.00%