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Note 6 - Indebtedness (Tables)

6 Months Ended

Sep. 30, 2019

Notes Tables

Convertible Debt [Table Text Block]

		September 30, 2019				March 31, 2019
Principal outstanding		$	172,500			$	--
Unamortized debt discount			(30,476	)			--
Unamortized debt issuance costs			(4,342	)			--
Net carrying value		$	137,682			$	--

		September 30, 2019				March 31, 2019
Amount allocated to conversion option		$	31,073			$	--
Less: allocated issuance costs and taxes			(9,427	)			--
Equity component, net		$	21,646			$	--

Interest Expense on Convertible Debt [Table Text Block]

		Three Months Ended September 30,								Six Months Ended September 30,
		2019				2018				2019				2018
Coupon interest expense at 1.375%		$	316			$	--			$	316			$	--
Amortization of debt discounts and issuance costs			707				--				707				--
Total		$	1,023			$	--			$	1,023			$	--

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