Note 11 - Fair Value of Financial Instrument - Fair Value and Carrying Value of Long-term Debt (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Mar. 31, 2024
Carrying value	$ 369,878	$ 604,786
Estimated fair value	$ 364,276	$ 599,408

Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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+ Details

- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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+ Details