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Accounting and Reporting Changes - Schedule of Effects of Retrospective Application of Provision in Condensed Consolidated Balance Sheet (Detail) - USD ($) $ in Thousands | Dec. 31, 2015 | Mar. 31, 2015
--- | --- | ---
Income Taxes [Line Items] |  |
Other assets | $ 186 | $ 146
Long-term deferred income tax liability | $ (6,784) | (5,876)
Scenario, Previously Reported [Member] |  |
Income Taxes [Line Items] |  |
Current deferred income tax asset |  | 647
Other assets |  | 150
Current deferred income tax liability |  | (164)
Long-term deferred income tax liability |  | (6,363)
Reclassification [Member] |  |
Income Taxes [Line Items] |  |
Current deferred income tax asset |  | (647)
Other assets |  | (4)
Current deferred income tax liability |  | 164
Long-term deferred income tax liability |  | $ 487

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