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FAIR VALUE MEASUREMENTS - Cash, Cash Equivalents and Investments with Hierarchy (Details) - USD ($)
$ in Thousands
Sep. 30, 2023
Mar. 31, 2023
Sep. 30, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Cash and cash equivalents $ 144,030 $ 111,400 $ 100,512
Accumulated gross unrealized gain, before tax 0 59  
Accumulated gross unrealized loss, before tax (1) (28)  
Cash, cash equivalents and debt securities available-for-sale, amortized cost 149,758 138,926  
Cash, cash equivalents and debt securities available-for-sale 149,757 138,957  
Level 1      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Accumulated gross unrealized gain, before tax 0 4  
Accumulated gross unrealized loss, before tax 0 (1)  
Cash, cash equivalents and debt securities available-for-sale, amortized cost 135,398 106,362  
Cash, cash equivalents and debt securities available-for-sale 135,398 106,365  
Level 2      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Amortized Costs 14,360 32,564  
Accumulated gross unrealized gain, before tax 0 55  
Accumulated gross unrealized loss, before tax (1) (27)  
Debt securities, available-for-sale 14,359 32,592  
Cash and Cash Equivalents      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Cash, cash equivalents and debt securities available-for-sale 144,030 111,400  
Cash and Cash Equivalents | Level 1      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Cash, cash equivalents and debt securities available-for-sale 133,816 104,763  
Cash and Cash Equivalents | Level 2      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Debt securities, available-for-sale 10,214 6,637  
Restricted Cash (Current & Non-current)      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Cash, cash equivalents and debt securities available-for-sale 983 1,329  
Restricted Cash (Current & Non-current) | Level 1      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Cash, cash equivalents and debt securities available-for-sale 983 0  
Restricted Cash (Current & Non-current) | Level 2      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Debt securities, available-for-sale 0 1,329  
Short-Term Investments      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Debt securities, available-for-sale 4,744 26,228  
Short-Term Investments | Level 1      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Debt securities, available-for-sale 599 1,602  
Short-Term Investments | Level 2      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Debt securities, available-for-sale 4,145 24,626  
Cash      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Cash and cash equivalents 70,729 95,828  
Cash and cash equivalents, fair value disclosure 70,729 95,828  
Cash | Cash and Cash Equivalents      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Cash and cash equivalents 70,729 95,828  
Cash | Restricted Cash (Current & Non-current)      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Cash and cash equivalents 0 0  
Money market funds | Level 1      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Cash and cash equivalents 64,070 8,935  
Cash and cash equivalents, fair value disclosure 64,070 8,935  
Accumulated gross unrealized gain, before tax 0 0  
Accumulated gross unrealized loss, before tax 0 0  
Money market funds | Cash and Cash Equivalents | Level 1      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Cash and cash equivalents 63,087 8,935  
Money market funds | Restricted Cash (Current & Non-current) | Level 1      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Cash and cash equivalents 983 0  
Money market funds | Short-Term Investments | Level 1      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Debt securities, available-for-sale 0 0  
Treasury securities | Level 1      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Amortized Costs 599 1,599  
Accumulated gross unrealized gain, before tax 0 4  
Accumulated gross unrealized loss, before tax 0 (1)  
Debt securities, available-for-sale 599 1,602  
Treasury securities | Cash and Cash Equivalents | Level 1      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Debt securities, available-for-sale 0 0  
Treasury securities | Restricted Cash (Current & Non-current) | Level 1      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Debt securities, available-for-sale 0 0  
Treasury securities | Short-Term Investments | Level 1      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Debt securities, available-for-sale 599 1,602  
Term deposit | Level 2      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Cash and cash equivalents 10,214    
Cash and cash equivalents, fair value disclosure 10,214    
Accumulated gross unrealized gain, before tax 0    
Accumulated gross unrealized loss, before tax 0    
Term deposit | Cash and Cash Equivalents | Level 2      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Cash and cash equivalents 10,214    
Term deposit | Restricted Cash (Current & Non-current) | Level 2      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Cash and cash equivalents 0    
Term deposit | Short-Term Investments | Level 2      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Debt securities, available-for-sale 0    
Certificate of deposit | Level 2      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Cash and cash equivalents   1,329  
Cash and cash equivalents, fair value disclosure   1,329  
Accumulated gross unrealized gain, before tax   0  
Accumulated gross unrealized loss, before tax   0  
Certificate of deposit | Cash and Cash Equivalents | Level 2      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Cash and cash equivalents   0  
Certificate of deposit | Restricted Cash (Current & Non-current) | Level 2      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Cash and cash equivalents   1,329  
Certificate of deposit | Short-Term Investments | Level 2      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Debt securities, available-for-sale   0  
Commercial paper | Level 2      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Amortized Costs 4,146 8,610  
Accumulated gross unrealized gain, before tax 0 0  
Accumulated gross unrealized loss, before tax (1) (2)  
Debt securities, available-for-sale 4,145 8,608  
Commercial paper | Cash and Cash Equivalents | Level 2      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Debt securities, available-for-sale 0 6,637  
Commercial paper | Restricted Cash (Current & Non-current) | Level 2      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Debt securities, available-for-sale 0  
Commercial paper | Short-Term Investments | Level 2      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Debt securities, available-for-sale $ 4,145 1,971  
Corporate debt | Level 2      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Amortized Costs   22,625  
Accumulated gross unrealized gain, before tax   55  
Accumulated gross unrealized loss, before tax   (25)  
Debt securities, available-for-sale   22,655  
Corporate debt | Cash and Cash Equivalents | Level 2      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Debt securities, available-for-sale   0  
Corporate debt | Restricted Cash (Current & Non-current) | Level 2      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Debt securities, available-for-sale   0  
Corporate debt | Short-Term Investments | Level 2      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Debt securities, available-for-sale   $ 22,655