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Segment Reporting - Financial Information by Business Segment (Assets) (Detail) - USD ($) $ in Thousands | Jan. 31, 2017 | Jan. 31, 2016 | Jan. 31, 2015
--- | --- | --- | ---
Segment Reporting Information [Line Items] |  |  |
Fixed assets, net | $ 43,838 | $ 73,516 | $ 100,087
Intangible assets, net | 9,012 | 10,466 | 10,831
Goodwill | 3,997 | 4,155 | 5,594
Total Assets | 94,714 | 134,759 | 179,611
Equipment Leasing [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Fixed assets, net | 39,926 | 69,238 | 98,964
Intangible assets, net |  |  | 1,006
Total Assets | 57,544 | 95,932 | 148,985
Equipment Manufacturing and Sales [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Fixed assets, net | 4,036 | 4,278 | 1,123
Intangible assets, net | 9,012 | 10,466 | 9,825
Goodwill | 3,997 | 4,155 | 5,594
Total Assets | $ 37,294 | $ 39,059 | $ 30,982

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