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Note 6 - Indebtedness - Interest Expense on the Notes (Details) - The Notes [Member] - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Coupon interest expense at 1.375%	$ 593	$ 593
Amortization of debt discounts and issuance costs	221	1,326
Total	$ 814	$ 1,919

X

- Definition

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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