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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
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Jan. 31, 2020 | Jan. 31, 2019 | Jan. 31, 2018
Assets: |  |  |
Net operating loss carryforwards | $ 22,683 | $ 8,228 |
Stock awards | 2,367 | 2,188 |
Research and development credit carryforwards | 134 | 631 |
Purchased intangibles | 415 | 604 |
Accrued expenses and other | 994 | 758 |
Total Assets | 26,593 | 12,409 |
Liabilities: |  |  |
Purchased intangibles | (3,317) | (3,373) |
Construction contracts | (1,618) | (454) |
Property and equipment | (1,983) | (1,986) |
Other | (193) | (145) |
Total Liabilities | (7,111) | (5,958) |
Valuation Allowances | (11,588) | (5,194) |
Deferred tax assets | 7,894 | 1,257 |
Net operating losses | 9,500 |  |
NOL which may be carried forward indefinitely | 38,500 |  |
Income tax benefit | $ 7,053 | $ 4,651 | $ (40,279)
Utilization of operating loss carry forward | 80.00% |  |

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