Segment Reporting - Financial Information by Business Segment (Revenues) (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2016	Oct. 31, 2015
Segment Reporting Information [Line Items]
Revenues	$ 8,057	$ 15,681	$ 28,451	$ 40,377
Operating (loss) income	(7,734)	(5,978)	(22,380)	(15,739)
(Loss) income before taxes	(7,558)	(6,559)	(22,793)	(15,596)
Operating Segments [Member] \| Equipment Leasing [Member]
Segment Reporting Information [Line Items]
Revenues	2,806	5,711	10,258	22,058
Operating (loss) income	(6,341)	(7,582)	(19,087)	(14,815)
(Loss) income before taxes	(6,292)	(8,033)	(18,627)	(14,517)
Operating Segments [Member] \| Equipment Manufacturing and Sales [Member]
Segment Reporting Information [Line Items]
Revenues	5,251	10,127	18,229	18,589
Operating (loss) income	(647)	2,470	(867)	1,772
(Loss) income before taxes	(513)	2,340	(1,699)	1,617
Eliminations [Member]
Segment Reporting Information [Line Items]
Revenues		(157)	(36)	(270)
Operating (loss) income	(58)	(74)	(36)	(28)
(Loss) income before taxes	(65)	(74)	(77)	(28)
Corporate Expenses [Member]
Segment Reporting Information [Line Items]
Operating (loss) income	(688)	(792)	(2,390)	(2,668)
(Loss) income before taxes	$ (688)	$ (792)	$ (2,390)	$ (2,668)

Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 940
-SubTopic 20
-Section 25
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=68072869&loc=d3e41242-110953

Reference 2: 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(10))
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04(15))
-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(8))
-URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913

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The net result for the period of deducting operating expenses from operating revenues.

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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=63488584&loc=d3e20235-122688

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