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Note 6 - Stock-based Compensation (Tables)

6 Months Ended

Sep. 30, 2018

Notes Tables

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]

		Three Months Ended September 30,								Six Months Ended September 30,
		2018				2017				2018				2017
Stock-based compensation expense		$	990			$	445			$	1,729			$	985
Amount of income tax expense (benefit) recognized in earnings			38				(108	)			(858	)			(120	)
Stock-based compensation, net of tax		$	1,028			$	337			$	871			$	865
Benefit to earnings per share
Basic		$	0.27			$	0.09			$	0.23			$	0.23
Diluted			0.25				0.09				0.22				0.22

Share-based Compensation, Activity [Table Text Block]

		Stock Options								Non-Vested Stock Awards
		Number of Shares				Weighted- Average Exercise Price per Share				Number of Shares				Weighted- Average Grant Date Fair Value
Outstanding at March 31, 2018			458			$	86.38				9			$	125.68
Awards granted			25				143.36				27				168.82
Awards forfeited or expired			(25	)			96.51				--				142.20
Awards exercised or vested			(52	)			68.98				(2	)			151.18
Outstanding as of September 30, 2018			406			$	91.53				34			$	161.30
Exercisable at September 30, 2018			157

X

- Definition

Tabular disclosure of the allocation of equity-based compensation costs to a given line item on the balance sheet and income statement for the period. This may include the reporting line for the costs and the amount capitalized and expensed.

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- Definition

Tabular disclosure for share-based compensation 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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