Segment Reporting - Financial Information by Business Segment (Assets) (Detail) - USD ($) $ in Thousands	Oct. 31, 2016	Jan. 31, 2016
Segment Reporting Information [Line Items]
Total Assets	$ 104,342	$ 134,759
Operating Segments [Member] | Equipment Leasing [Member]
Segment Reporting Information [Line Items]
Total Assets	67,368	95,932
Operating Segments [Member] | Equipment Manufacturing and Sales [Member]
Segment Reporting Information [Line Items]
Total Assets	37,239	39,059
Eliminations [Member]
Segment Reporting Information [Line Items]
Total Assets	$ (265)	$ (232)