Segment Reporting - Financial Information by Business Segment (Assets) (Detail) - USD ($) $ in Thousands	Jul. 31, 2016	Jan. 31, 2016
Segment Reporting Information [Line Items]
Total Assets	$ 113,851	$ 134,759
Operating Segments [Member] | Equipment Leasing [Member]
Segment Reporting Information [Line Items]
Total Assets	76,570	95,932
Operating Segments [Member] | Equipment Manufacturing and Sales [Member]
Segment Reporting Information [Line Items]
Total Assets	37,578	39,059
Eliminations [Member]
Segment Reporting Information [Line Items]
Total Assets	$ (297)	$ (232)