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FAIR VALUE MEASUREMENTS
 3 Months Ended
Jun. 30, 2025
Fair Value Disclosures [Abstract]  
FAIR VALUE MEASUREMENTS
NOTE 6 – FAIR VALUE MEASUREMENTS
The fair value hierarchy has three levels based on the reliability of the inputs used to determine fair value. Level 1 refers to fair values determined based on quoted prices in active markets for identical assets. Level 2 refers to fair values estimated using significant other observable inputs, and Level 3 includes fair values estimated using significant non-observable inputs. The following tables present the Company's financial assets and liabilities measured on a recurring basis using the fair value hierarchy at June 30, 2025 and March 31, 2025 (in thousands):
Fair Value Measurements at
 June 30, 2025
 Level 1Level 2Level 3Total
ASSETS:
Cash and cash equivalents$458,997 $30,575 $— $489,572 
U.S. government and municipal obligations6,934 — — 6,934 
Commercial paper— 18,525 — 18,525 
Corporate bonds996 — 996 
Certificates of deposit— 1,263 — 1,263 
Equity investment in Napatech15,241 — — 15,241 
Derivative financial instruments318 — 318 
Agency bonds10,974 — 10,974 
$481,172 $62,651 $— $543,823 
LIABILITIES:
Derivative financial instruments$— $(28)$— $(28)
$— $(28)$— $(28)
Fair Value Measurements at
 March 31, 2025
 Level 1Level 2Level 3Total
ASSETS:
Cash and cash equivalents$434,121 $23,294 $— $457,415 
U.S. government and municipal obligations3,008 2,410 — 5,418 
Commercial paper— 17,358 — 17,358 
Certificates of deposit— 505 — 505 
Equity investment in Napatech11,781 — — 11,781 
Derivative financial instruments— 197 — 197 
$448,910 $43,764 $— $492,674 
LIABILITIES:
Derivative financial instruments$— $(55)$— $(55)
$— $(55)$— $(55)
This hierarchy requires the Company to use observable market data, when available, and to minimize the use of unobservable inputs when determining fair value. On a recurring basis, the Company measures certain financial assets and liabilities at fair value, including marketable securities and derivative financial instruments.
The Company's Level 1 investments are classified as such because they are valued using quoted market prices or alternative pricing sources with reasonable levels of price transparency.
The Company's Level 2 investments are classified as such because they are valued using observable inputs other than Level 1 quoted prices that are observable for the asset or liability, either directly or indirectly, including quoted prices for similar assets or liabilities in active markets, or quoted prices for identical or similar assets in markets that are not active.