Income Taxes - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended
Dec. 31, 2014
Income Tax Disclosure [Abstract]
Alternative Minimum Tax Credit	$ 517
Valuation allowance	1,051
Increase in valuation allowance	786
Federal and state research and experimental tax credit	5,020
Liability relating to uncertain tax positions	212
Unrecognized Tax Benefits	$ 0us-gaap_UnrecognizedTaxBenefits

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible alternative minimum tax credit carryforwards.

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-Glossary Alternative Minimum Tax

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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to tax credits. Including, but not limited to, research credit, foreign tax credit, investment tax credit, and other tax credits.

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The current portion of the amount recognized for uncertain tax positions as of the balance sheet date.

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

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Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset.

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