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Subsequent Events (Details) - $ / shares					12 Months Ended
	May. 09, 2016	Aug. 04, 2015	Jul. 01, 2015	May. 11, 2015	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2014
Subsequent Event [Line Items]
Options granted, shares					208,200	317,900	227,700
Options granted, weighted-average exercise price (in USD per share)					$ 42.13	$ 33.54	$ 29.94
Subsequent Event
Subsequent Event [Line Items]
Options granted, shares	236,116
Restricted Stock Units (RSUs)
Subsequent Event [Line Items]
Restricted common stock units granted in period, shares		2,075	2,841	185,904
Award vesting period		1 year	3 years
Restricted Stock Units (RSUs) | Subsequent Event
Subsequent Event [Line Items]
Restricted common stock units granted in period, shares	51,266
Award vesting period	3 years
Stock Options
Subsequent Event [Line Items]
Restricted common stock units granted in period, shares			13,861
Options granted, shares				186,302
Award vesting period			3 years	3 years
Award vesting rights, percentage			33.30%	33.30%
Expiration period			10 years
Options granted, weighted-average exercise price (in USD per share)			$ 46.58	$ 41.44
Stock Options | Subsequent Event
Subsequent Event [Line Items]
Award vesting period	3 years
Award vesting rights, percentage	33.30%
Expiration period	10 years
Options granted, weighted-average exercise price (in USD per share)	$ 57.18

X

- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

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).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Gross number of share options (or share units) granted during the period.

+ References

No definition available.

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- Definition

Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

+ References

No definition available.

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- Definition

Percentage of vesting of share-based compensation awards.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(2)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

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