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Income Taxes (Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Thousands | Jan. 31, 2018 | Jan. 31, 2017 | Oct. 31, 2016
--- | --- | --- | ---
Deferred tax assets |  |  |
Accrued vacation and sick leave | $ 1,015 | $ 1,211 |
Retirement plans | 3,756 | 6,900 |
Insurance reserves | 451 | 633 |
Warranty | 242 | 383 |
Net operating loss carryforwards | 4,722 | 7,627 |
Intangibles | 0 | 0 |
Inventory | 1,085 | 1,418 |
Other | 624 | 1,005 |
Total deferred tax assets | 11,895 | 19,177 |
Deferred tax liabilities |  |  |
Tax in excess of book depreciation | (811) | (1,556) |
Other | (66) | (98) |
Total deferred tax liabilities | (877) | (1,654) |
Valuation allowance | (925) | (515) | $ (17,962)
Net long term deferred tax asset | $ 10,093 | $ 17,008 |

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