FAIR VALUE MEASUREMENTS - Narrative (Details) - USD ($) $ in Thousands, shares in Millions		1 Months Ended		12 Months Ended
	Mar. 31, 2023	Apr. 30, 2023	Feb. 28, 2023	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Change in fair value of derivative instrument				$ 206	$ (1,380)	$ 0
Fair Value, Liability, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]				Other Nonoperating Income (Expense)	Other Nonoperating Income (Expense)
Collection of contingent consideration				$ 0	$ 0	837
Disposal Group, Disposed of by Sale | Handheld Network Test Tools Business
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collection of contingent consideration						$ 800
Foreign exchange forward contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Change in fair value of derivative instrument				200	$ (1,400)
Foreign exchange forward contracts | Napatech
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Number of shares acquired (in shares)	6.2	6.2	6.2		6.2
Payment for common stock	$ 7,500	$ 6,200	$ 7,500		$ 7,500
Change in fair value of derivative instrument				$ 200	$ (1,400)