Segment Reporting - Financial Information by Business Segment (Revenues) (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2016	Jul. 31, 2015	Jul. 31, 2016	Jul. 31, 2015
Segment Reporting Information [Line Items]
Revenues	$ 8,663	$ 7,554	$ 20,394	$ 24,696
Operating (loss) income	(8,315)	(8,804)	(14,646)	(9,761)
(Loss) income before taxes	(9,091)	(8,645)	(15,235)	(9,037)
Operating Segments [Member] | Equipment Leasing [Member]
Segment Reporting Information [Line Items]
Revenues	2,909	4,811	7,452	16,347
Operating (loss) income	(7,077)	(7,200)	(12,746)	(7,232)
(Loss) income before taxes	(7,552)	(7,152)	(12,335)	(6,483)
Operating Segments [Member] | Equipment Manufacturing and Sales [Member]
Segment Reporting Information [Line Items]
Revenues	5,758	2,787	12,978	8,462
Operating (loss) income	(421)	(740)	(219)	(698)
(Loss) income before taxes	(734)	(629)	(1,186)	(723)
Eliminations [Member]
Segment Reporting Information [Line Items]
Revenues	(4)	(44)	(36)	(113)
Operating (loss) income	15	33	21	46
(Loss) income before taxes	27	33	(12)	46
Corporate Expenses [Member]
Segment Reporting Information [Line Items]
Operating (loss) income	(832)	(897)	(1,702)	(1,877)
(Loss) income before taxes	$ (832)	$ (897)	$ (1,702)	$ (1,877)