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INCOME TAXES - Schedule of Tax Effects of Temporary Differences that Gave Rise to Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Jan. 31, 2019 | Jan. 31, 2018 | Jan. 31, 2017
Assets: |  |  |
Net operating loss carryforwards | $ 3,034 | $ 2,635 |
Stock awards | 2,188 | 2,042 |
Research and development credit carryforwards | 631 |  |
Purchased intangibles | 604 | 864 |
Accrued expenses and other | 758 | 862 |
Total Assets | 7,215 | 6,403 |
Liabilities: |  |  |
Purchased intangibles | (3,373) | (3,664) |
Construction contracts | (454) | (1,896) |
Property and equipment and other | (2,131) | (1,683) |
Total Liabilities | (5,958) | (7,243) |
Net deferred tax assets | 1,257 |  |
Net deferred tax liabilities |  | (840) |
Net operating losses | 9,500 |  |
Income tax benefit (expense) | 4,651 | $ (40,279) | $ (37,106)
Republic of Ireland |  |  |
Liabilities: |  |  |
Net operating losses | 3,000 |  |
Income tax benefit (expense) | $ 400 |  |

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- Definition Amount of deferred tax liability attributable to taxable temporary differences. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(15)(b)(2)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(15)(2)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(26)(a)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(26)(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319 + Details
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