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PROPERTY, PLANT AND EQUIPMENT - Depreciation Expense and Cost of Maintenance and Repairs (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
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Jul. 31, 2016 | Jul. 31, 2015 | Jul. 31, 2016 | Jul. 31, 2015
Property, Plant and Equipment |  |  |  |
Depreciation expense | $ 484 | $ 140 | $ 918 | $ 258
Costs of Revenues |  |  |  |
Property, Plant and Equipment |  |  |  |
Rent expense | $ 2,600 | $ 3,800 | $ 5,700 | $ 8,400

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- Definition The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585 + Details
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- Definition Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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