FAIR VALUE OF FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS - Schedule of Fair Value Measurements within the Fair Value Hierarchy (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Mar. 31, 2026
Fair value of assets and liabilities
Cash and Cash Equivalents	$ 363,523	$ 379,547
Short-Term Investments	7,500	7,500
Other Current Assets	19,067	17,055
Total assets	390,090	404,102
Cash
Fair value of assets and liabilities
Other Current Assets	0	0
Cash
Fair value of assets and liabilities
Short-Term Investments	0	0
Cash
Fair value of assets and liabilities
Cash and Cash Equivalents	34,697	34,042
Total assets	34,697	34,042
Level 1: \| Money market funds
Fair value of assets and liabilities
Other Current Assets	0	0
Level 1: \| Assets of non-qualified retirement plan
Fair value of assets and liabilities
Other Current Assets	18,920	16,870
Level 1: \| Certificates of deposit
Fair value of assets and liabilities
Other Current Assets	0	0
Level 1: \| Equity securities
Fair value of assets and liabilities
Other Current Assets	147	185
Level 1: \| Money market funds
Fair value of assets and liabilities
Short-Term Investments	0	0
Level 1: \| Assets of non-qualified retirement plan
Fair value of assets and liabilities
Short-Term Investments	0	0
Level 1: \| Certificates of deposit
Fair value of assets and liabilities
Short-Term Investments	7,500	7,500
Level 1: \| Equity securities
Fair value of assets and liabilities
Short-Term Investments	0	0
Level 1: \| Money market funds
Fair value of assets and liabilities
Cash and Cash Equivalents	328,826	345,505
Total assets	328,826	345,505
Level 1: \| Assets of non-qualified retirement plan
Fair value of assets and liabilities
Cash and Cash Equivalents	0	0
Total assets	18,920	16,870
Level 1: \| Certificates of deposit
Fair value of assets and liabilities
Cash and Cash Equivalents	0	0
Total assets	7,500	7,500
Level 1: \| Equity securities
Fair value of assets and liabilities
Cash and Cash Equivalents	0	0
Total assets	$ 147	$ 185