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INCOME TAXES - Narrative (Details) - USD ($)
12 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Mar. 31, 2021
Mar. 31, 2020
Income Tax Contingency [Line Items]        
Provision for (benefit from) income taxes $ 2,807,000 $ (387,000) $ 843,000  
Deferred tax benefit 0 1,253,000 0  
Undistributed earnings (losses) of foreign subsidiaries 2,700,000 12,900,000 15,300,000  
Deferred tax assets, valuation allowance 360,274,000 349,093,000    
Operating loss carryforwards 1,199,100,000      
Operating loss carryforwards, subject to expiration 361,000,000      
Operating loss carryforward, indefinitely 838,100,000      
Unrecognized tax benefits 10,113,000 9,850,000 7,053,000 $ 6,115,000
Accrued penalties and interest 100,000 200,000 $ 0  
Domestic Tax Authority        
Income Tax Contingency [Line Items]        
Research tax credit carryforwards 18,500,000      
State and Local Jurisdiction        
Income Tax Contingency [Line Items]        
Operating loss carryforwards 978,700,000      
Research tax credit carryforwards $ 21,800,000      
Fuze        
Income Tax Contingency [Line Items]        
Deferred tax benefit   $ 1,200,000