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INCOME TAXES - Schedule of Tax Effects of Temporary Differences that Gave Rise to Deferred Tax Assets (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Jan. 31, 2021 | Jan. 31, 2020 | Jan. 31, 2019
Assets: |  |  |
Net operating loss carryforwards | $ 14,192 | $ 22,683 |
Stock awards | 2,549 | 2,367 |
Research and development credit carryforwards | 102 | 134 |
Purchased intangibles | 234 | 415 |
Lease liabilities | 775 | 528 |
Accrued expenses and other | 1,422 | 991 |
Total Assets | 19,274 | 27,118 |
Liabilities: |  |  |
Purchased intangibles | (3,513) | (3,317) |
Construction contracts | (968) | (1,618) |
Property and equipment | (1,801) | (1,983) |
Right-of-use assets | (770) | (525) |
Other | (176) | (193) |
Total Liabilities | (7,228) | (7,636) |
Valuation allowances | (11,797) | (11,588) |
Deferred tax assets | 249 | 7,894 |
Net operating losses | 6,300 |  |
Income tax (expense) benefits (Note 13) | $ (1,074) | $ 7,053 | $ 4,651

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