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Note 7 - Stockholders' Equity (Tables)

9 Months Ended

Dec. 31, 2019

Notes Tables

Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]

		Three Months Ended December 31,								Nine Months Ended December 31,
		2019				2018				2019				2018
Stock-based compensation expense		$	3,260			$	695			$	5,310			$	2,424
Amount of income tax (benefit) recognized in earnings			(78	)			(160	)			(986	)			(1,018	)
Stock-based compensation expense, net of tax		$	3,182			$	535			$	4,324			$	1,406

Share-based Payment Arrangement, Option, Activity [Table Text Block]

		Stock Options								Restricted Stock Units
		Shares Subject to Options				Weighted- Average Exercise Price per Share				Number of Shares				Weighted- Average Grant Date Fair Value per Share
Outstanding at March 31, 2019			354			$	94.04				31			$	162.23
Awards granted			29				205.87				28				213.33
Awards forfeited or expired			(28	)			99.69				(2	)			160.55
Awards exercised or distributed			(42	)			85.35				(5	)			168.58
Outstanding as of December 31, 2019			313			$	105.03				52			$	189.17

X

- Definition

Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement.

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