Income Taxes - Reconciliation of the Financial Statement Recognition and Measurement of Uncertain Tax Positions During the Current Fiscal Year (Detail)	12 Months Ended
Mar. 31, 2017 USD ($)
Income Tax Disclosure [Abstract]
Balance as of March 31, 2016	$ 1,830,000
Additions based on tax positions related to the current year	355,000
Additions for tax positions of prior years	0
Reductions for tax positions related to the current year	(177,000)
Reductions for tax positions of prior years	(124,000)
Balance as of March 31, 2017	$ 1,884,000

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- Definition

Amount of unrecognized tax benefits.

+ 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=65882285&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 tax positions taken in prior period tax returns.

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Amount of increase 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 increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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