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Income Taxes - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 6 Months Ended | 12 Months Ended | |||
|---|---|---|---|---|---|---|
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Sep. 30, 2013
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Sep. 30, 2012
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Sep. 30, 2013
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Sep. 30, 2012
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Mar. 31, 2013
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Mar. 31, 2012
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| Income Taxes [Line Items] | ||||||
| Percentage of tax credits claimed reduction | 30.00% | 40.00% | ||||
| Liability unrecognized tax benefits | $ 134 | $ 134 | $ 134 | |||
| Additional unrecognized tax benefit | 882 | |||||
| Interest uncertain tax positions | 2 | (387) | 4 | (325) | ||
| Penalties related to uncertain tax positions | $ 0 | $ 0 | $ 0 | $ 0 | ||
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Maximum [Member] | Federal Tax Jurisdictions [Member]
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| Income Taxes [Line Items] | ||||||
| Federal and State tax jurisdictions for tax period | 2012 | |||||
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Maximum [Member] | State Tax Jurisdictions [Member]
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| Income Taxes [Line Items] | ||||||
| Federal and State tax jurisdictions for tax period | 2012 | |||||
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Maximum [Member] | International Tax Jurisdictions [Member]
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| Income Taxes [Line Items] | ||||||
| Federal and State tax jurisdictions for tax period | 2012 | |||||
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Minimum [Member] | Federal Tax Jurisdictions [Member]
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| Income Taxes [Line Items] | ||||||
| Federal and State tax jurisdictions for tax period | 2011 | |||||
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Minimum [Member] | State Tax Jurisdictions [Member]
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| Income Taxes [Line Items] | ||||||
| Federal and State tax jurisdictions for tax period | 2008 | |||||
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Minimum [Member] | International Tax Jurisdictions [Member]
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| Income Taxes [Line Items] | ||||||
| Federal and State tax jurisdictions for tax period | 2010 | |||||