Reconciliation of Changes in Uncertain Tax Positions (Detail) $ in Thousands	12 Months Ended
Mar. 31, 2015 USD ($)
Reconciliation of Unrecognized Tax Benefits [Line Items]
Total amount of unrecognized tax benefits as of April 1, 2013	$ 121
Gross increases in unrecognized tax benefits as a result of tax positions taken during a prior period	223
Gross decreases in unrecognized tax benefits as a result of tax positions taken during a prior period	0
Gross increases in unrecognized tax benefits as a result of tax positions taken during the current period	257
Gross decreases in unrecognized tax benefits as a result of tax positions taken during the current period	0
Decreases in unrecognized tax benefits relating to settlements with taxing authorities	0
Reductions to unrecognized tax benefits as a result of lapse of statute of limitations	(121)
Total amount of unrecognized tax benefits as of March 31, 2015	$ 480

Reconciliation of Unrecognized Tax Benefits [Line Items]

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- Definition

Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 15A

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Unrecognized Tax Benefit

-URI http://asc.fasb.org/extlink&oid=6527854

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Amount of decrease in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

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Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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