Note 4 - Marketable Securities - Schedule of Contractual Maturity (Details) $ in Thousands	Mar. 31, 2025 USD ($)
Due in one year or less, amortized cost	$ 74,754
Due in one year or less, fair value	74,697
Due after one year through five years, amortized cost	173,099
Due after one year through five years, fair value	173,193
Due after ten years, amortized cost	3,588
Due after ten years, fair value	3,588
Total marketable securities, amortized cost	251,441
Total marketable securities, fair value	$ 251,478

Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in second through fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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