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Income Taxes - Company's Deferred Taxes (Detail) (USD $) In Thousands, unless otherwise specified | Jan. 31, 2014 | Jan. 31, 2013
--- | --- | ---
Deferred tax assets: |  |
Net operating losses | $ 2,592 | $ 1,246
Tax credit carry forwards | 3,470 | 3,449
Stock option book expense | 2,689 | 2,605
Allowance for doubtful accounts | 1,704 | 1,752
Allowance for inventory obsolescence | 94 | 192
Accruals not yet deductible for tax purposes | 620 | 692
Other | 679 | 675
Gross deferred tax assets | 11,848 | 10,611
Valuation allowance |  |
Deferred tax assets | 11,848 | 10,611
Deferred tax liabilities: |  |
Fixed assets | (2,172) | (1,841)
Intangible assets | (435) | (595)
Foreign branch taxes | (1,140) | (1,626)
Other |  | (411)
Deferred tax liabilities | (3,747) | (4,473)
Total deferred tax assets, net | $ 8,101 | $ 6,138

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