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Note 6 - Indebtedness - Interest Expense on the Notes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Term Loan [Member]
Interest expense (7.2% and 8.4% as of September 30, 2025 and 2024, respectively)	$ 1,305	$ 1,662	$ 2,597	$ 3,101
Amortization of debt issuance costs	38	38	75	73
Total interest and amortization of debt issuance costs	1,343	1,700	2,672	3,174
Coupon interest expense at 1.375%	1,305	1,662	2,597	3,101
Amortization of debt issuance costs	38	38	75	73
The Notes [Member]
Interest expense (7.2% and 8.4% as of September 30, 2025 and 2024, respectively)	168	335	503	702
Amortization of debt issuance costs	68	133	203	278
Total interest and amortization of debt issuance costs	236	468	706	980
Coupon interest expense at 1.375%	168	335	503	702
Amortization of debt issuance costs	$ 68	$ 133	$ 203	$ 278

X

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Amount of amortization expense attributable to debt discount (premium) and debt issuance costs.

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Amount of the cost of borrowed funds accounted for as interest expense for debt.

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