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Income Taxes - Additional Information (Detail) (USD $)
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3 Months Ended | 9 Months Ended | ||
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Oct. 31, 2013
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Oct. 31, 2012
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Oct. 31, 2013
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Oct. 31, 2012
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| Income Tax Disclosure [Abstract] | ||||
| Income tax expense (benefit) | $ (423,000) | $ (882,000) | $ (784,000) | $ (766,000) |
| Effective income tax rate, continuing operations | 15.00% | |||
| Effective income tax rate reconciliation, at federal statutory income tax rate | 35.00% | |||
| Tax benefit recognized | $ 500,000 | |||
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- Definition
Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Percentage of domestic federal statutory tax rate applicable to pretax income (loss). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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