INCOME TAXES - Schedule of Tax Effects of Temporary Differences that Gave Rise to Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands |
Apr. 30, 2017 |
Jan. 31, 2017 |
|---|---|---|
| Assets: | ||
| Net operating loss ("NOL") carryforwards | $ 3,478 | $ 3,487 |
| Stock options | 1,935 | 1,594 |
| Purchased intangibles | 1,508 | 1,592 |
| Accrued expenses and other | 1,713 | 2,052 |
| Total Assets | 8,634 | 8,725 |
| Liabilities: | ||
| Purchased intangibles | (4,508) | (4,428) |
| Construction contracts | (3,002) | (2,862) |
| Property and equipment and other | (2,336) | (2,389) |
| Total Liabilities | (9,846) | (9,679) |
| Net deferred tax liabilities | $ (1,212) | $ (954) |