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Segment Reporting - Financial Information by Business Segment (Revenues) (Detail) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jan. 31, 2016 | Oct. 31, 2015 | Jul. 31, 2015 | Apr. 30, 2015 | Jan. 31, 2015 | Oct. 31, 2014 | Jul. 31, 2014 | Apr. 30, 2014 | Jan. 31, 2016 | Jan. 31, 2015 | Jan. 31, 2014
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues | $ 11,442 | $ 15,681 | $ 7,554 | $ 17,142 | $ 14,963 | $ 22,906 | $ 19,545 | $ 25,732 | $ 51,819 | $ 83,146 | $ 92,108
Interest income (expense), net |  |  |  |  |  |  |  |  | (725) | (673) | (10)
Operating (loss) income |  |  |  |  |  |  |  |  | (26,760) | (6,745) | 5,805
Capital expenditures |  |  |  |  |  |  |  |  | 2,509 | 19,900 | 44,058
Depreciation and amortization expense |  |  |  |  |  |  |  |  | 32,111 | 36,986 | 31,037
Equipment Leasing [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 26,665 | 52,836 | 55,549
Interest income (expense), net |  |  |  |  |  |  |  |  | (486) | (548) | (6)
Operating (loss) income |  |  |  |  |  |  |  |  | (27,156) | (8,766) | 699
Capital expenditures |  |  |  |  |  |  |  |  | 2,283 | 15,874 | 43,663
Depreciation and amortization expense |  |  |  |  |  |  |  |  | 30,370 | 35,472 | 30,353
Equipment Manufacturing and Sales [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 25,350 | 30,872 | 36,893
Interest income (expense), net |  |  |  |  |  |  |  |  | (239) | (125) | (4)
Operating (loss) income |  |  |  |  |  |  |  |  | 279 | 2,178 | 5,055
Capital expenditures |  |  |  |  |  |  |  |  | 226 | 4,026 | 395
Depreciation and amortization expense |  |  |  |  |  |  |  |  | $ 1,741 | $ 1,514 | $ 684

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- Definition The aggregate net amount of depreciation, amortization, and accretion recognized during an accounting period. As a noncash item, the net amount is added back to net income when calculating cash provided by or used in operations using the indirect method. + 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 revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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