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Note 7 - Stockholders' Equity (Tables)

6 Months Ended

Sep. 30, 2019

Notes Tables

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

		Three Months Ended September 30,								Six Months Ended September 30,
		2019				2018				2019				2018
Stock-based compensation expense		$	1,182			$	990			$	2,050			$	1,729
Amount of income tax (benefit) recognized in earnings			(368	)			38				(908	)			(858	)
Stock-based compensation expense (benefit), net of tax		$	814			$	1,028			$	1,142			$	871

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				205.46				19				202.09
Awards forfeited or expired			(27	)			99.36				(2	)			156.14
Awards exercised or distributed			(40	)			84.54				(3	)			155.62
Outstanding as of September 30, 2019			316			$	104.89				45			$	180.13

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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Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value.

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