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Note 7 - Indebtedness (Tables)

6 Months Ended

Sep. 30, 2023

Notes Tables

Convertible Debt [Table Text Block]

		September 30, 2023				March 31, 2023
Principal outstanding		$	172,500			$	172,500
Unamortized debt issuance costs			(1,767	)			(2,228	)
Net carrying value		$	170,733			$	170,272

Interest Expense on Convertible Debt [Table Text Block]

		Three Months Ended September 30,								Six Months Ended September 30,
		2023				2022				2023				2022
Coupon interest expense at 1.375%		$	593			$	593			$	1,186			$	1,186
Amortization of debt issuance costs			231				227				461				452
Total interest and amortization of debt issuance costs		$	824			$	820			$	1,647			$	1,638

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