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Pending Coherent Acquisition (Details)
$ / shares in Units, $ in Millions
3 Months Ended
Mar. 31, 2021
USD ($)
$ / shares
shares
Mar. 25, 2021
USD ($)
Dec. 31, 2021
USD ($)
d
$ / shares
shares
Jun. 30, 2020
$ / shares
Business Acquisition [Line Items]        
Common stock, no par value $ 0     $ 0
Series B-1 Convertible Preferred Stock        
Business Acquisition [Line Items]        
Preferred stock, dividend rate, percentage   5.00%    
Preferred stock, default on payment obligation, dividend rate, percentage   14.00%    
Series B-1 Convertible Preferred Stock | Investment Agreement, BCPE Watson (DE) SPV, LP        
Business Acquisition [Line Items]        
Sale of stock, shares issued (in shares) | shares 75,000      
Sale of stock, price per share (in usd per share) $ 10,000      
Aggregate purchase price of stock sold | $ $ 750.0      
Preferred stock, par value (in usd per share) $ 0      
Series B-2 Convertible Preferred Stock        
Business Acquisition [Line Items]        
Preferred stock, dividend rate, percentage   5.00%    
Preferred stock, default on payment obligation, dividend rate, percentage   14.00%    
Series B-2 Convertible Preferred Stock | Over-Allotment Option II        
Business Acquisition [Line Items]        
Sale of stock, shares issued (in shares) | shares 35,000      
Aggregate purchase price of stock sold | $ $ 350.0      
Scenario Forecast | Subsequent Event | Series B-2 Convertible Preferred Stock | Investment Agreement, BCPE Watson (DE) SPV, LP        
Business Acquisition [Line Items]        
Sale of stock, shares issued (in shares) | shares     105,000  
Aggregate purchase price of stock sold | $     $ 1,050.0  
Preferred stock, par value (in usd per share)     $ 0  
Coherent Inc. | Debt Financing Under Commitment Letter        
Business Acquisition [Line Items]        
Debt financing commitment | $   $ 5,125.0    
Coherent Inc. | Scenario Forecast | Subsequent Event        
Business Acquisition [Line Items]        
Common stock, par value (in usd per share)     0.01  
Business combination, cash consideration paid per acquiree share     $ 220.00  
Number of shares to be received (in shares) | shares     0.91  
Common stock, no par value     $ 0  
Business combination, weighted average price of share, trading day period ending prior to closing | d     10  
Business combination, qualifying termination, of acquiree, holder of converted restricted stock units, year one, acceleration vesting percentage     100.00%  
Business combination, qualifying termination, of acquiree, holder of converted restricted stock units, year two, acceleration vesting percentage     50.00%