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Note 6 - Indebtedness (Tables)

9 Months Ended

Dec. 31, 2019

Notes Tables

Convertible Debt [Table Text Block]

		December 31, 2019				March 31, 2019
Principal outstanding		$	172,500			$	--
Unamortized debt discount			(29,348	)			--
Unamortized debt issuance costs			(4,185	)			--
Net carrying value		$	138,967			$	--

		December 31, 2019				March 31, 2019
Amount allocated to conversion option		$	31,073			$	--
Less: allocated issuance costs and deferred taxes			(9,427	)			--
Equity component, net		$	21,646			$	--

Interest Expense on Convertible Debt [Table Text Block]

		Three Months Ended December 31,								Nine Months Ended December 31,
		2019				2018				2019				2018
Coupon interest expense at 1.375%		$	593			$	--			$	909			$	--
Amortization of debt discounts and issuance costs			1,295				--				2,002				--
Total		$	1,888			$	--			$	2,911			$	--

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