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Income Taxes - Additional Information (Detail) (USD $) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2014 | Dec. 31, 2013 | Mar. 31, 2014
Income Taxes [Line Items] |  |  |  |  |
Liability unrecognized tax benefits | $ 0 us-gaap_UnrecognizedTaxBenefits |  | $ 0 us-gaap_UnrecognizedTaxBenefits |  | $ 0 us-gaap_UnrecognizedTaxBenefits
Unrecognized tax benefits, interest expense on income taxes | 0 us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense | (15,000)us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense | 0 us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense | (11,000)us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense |
Penalties related to uncertain tax positions | $ 0 us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesExpense | $ 0 us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesExpense | $ 0 us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesExpense | $ 0 us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesExpense |
Earliest Tax Year [Member] | Federal Tax Jurisdictions [Member] |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |
Federal and State tax jurisdictions for tax period |  |  | 2013 |  |
Earliest Tax Year [Member] | State Tax Jurisdictions [Member] |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |
Federal and State tax jurisdictions for tax period |  |  | 2010 |  |
Earliest Tax Year [Member] | International Tax Jurisdictions [Member] |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |
Federal and State tax jurisdictions for tax period |  |  | 2012 |  |
Latest Tax Year [Member] | Federal Tax Jurisdictions [Member] |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |
Federal and State tax jurisdictions for tax period |  |  | 2014 |  |
Latest Tax Year [Member] | State Tax Jurisdictions [Member] |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |
Federal and State tax jurisdictions for tax period |  |  | 2014 |  |
Latest Tax Year [Member] | International Tax Jurisdictions [Member] |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |
Federal and State tax jurisdictions for tax period |  |  | 2014 |  |

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- Definition Tax year that remains open to examination under enacted tax laws, in CCYY format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 + Details
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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 -Glossary Unrecognized Tax Benefit -URI http://asc.fasb.org/extlink&oid=6527854 Reference 2: 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 + Details
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- Definition Amount of expense for penalties related to a tax position claimed or expected to be claimed in the tax return. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 + Details
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- Definition Amount of interest expense for an underpayment of income taxes. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 + Details
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