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 | |