Earnings Per Share and Stock Plans 2 of 2 (Details) - $ / shares	12 Months Ended
Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]
Unvested Opening Balance	153,386	126,570	118,853
Granted	38,585	34,695	49,221
Forfeited	(125,251)	(7,879)	(41,504)
Unvested Closing Balance	66,720	153,386	126,570
Unvested Opening Balance	$ 23.11	$ 19.42	$ 18.92
Granted	37.67	36.43	25.28
Unvested Closing Balance	32.36	23.11	19.42
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value	$ 22.67	$ 22.40	$ 24.94
Long Term Incentive Plans
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]
Unvested Opening Balance	230,197	336,789	370,256
Granted	151,351	116,942	136,935
Forfeited	(62,035)	(11,602)	(12,954)
Unvested Closing Balance	212,721	230,197	336,789
Unvested Opening Balance	$ 30.22	$ 22.62	$ 19.32
Granted	38.40	37.90	29.38
Vested	31.09	22.66	20.39
Unvested Closing Balance	$ 35.20	$ 30.22	$ 22.62
Stock Granted, Value, Share-based Compensation, Forfeited	106,792	211,932	157,448
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value	$ 31.61	$ 25.18	$ 17.99

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(3)
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Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

+ References

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-Publisher FASB
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-Topic 718
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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ References

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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No definition available.

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Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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