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PURCHASED INTANGIBLE ASSETS - Goodwill and Finite Lived Intangible Assets (Details) - USD ($) | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Jan. 31, 2016 | Dec. 04, 2015 | May. 29, 2015 | Jan. 31, 2015 | Jan. 31, 2014
Finite-Lived Intangible Assets |  |  |  |  |
Goodwill | $ 37,405,000 |  |  | $ 18,476,000 | $ 18,476,000
Goodwill allocated for income tax reporting purposes | $ 12,300,000 |  |  |  |
Period of amortization of goodwill for income tax purpose | 15 years |  |  |  |
Accumulated amortization | $ 2,510,000 |  |  | 1,979,000 | $ 1,736,000
Finite Lived Intangible Assets - Net Amount | 4,664,000 |  |  |  |
GPS |  |  |  |  |
Finite-Lived Intangible Assets |  |  |  |  |
Goodwill | 18,476,000 |  |  | 18,476,000 |
Roberts |  |  |  |  |
Finite-Lived Intangible Assets |  |  |  |  |
Goodwill | 14,880,000 | $ 14,880,000 |  |  |
APC |  |  |  |  |
Finite-Lived Intangible Assets |  |  |  |  |
Goodwill | 4,049,000 |  | $ 4,049,000 |  |
Trade Name | GPS |  |  |  |  |
Finite-Lived Intangible Assets |  |  |  |  |
Finite Lived Intangible Assets - Gross Carrying Amount | 3,643,000 |  |  |  |
Accumulated amortization | 2,222,000 |  |  |  |
Finite Lived Intangible Assets - Net Amount | $ 1,421,000 |  |  | $ 1,664,000 |
Trade Name | GPS | GPS |  |  |  |  |
Finite-Lived Intangible Assets |  |  |  |  |
Finite-Lived Intangible Assets - Estimated Useful Life | 15 years |  |  |  |
Process certifications | Roberts |  |  |  |  |
Finite-Lived Intangible Assets |  |  |  |  |
Finite-Lived Intangible Assets - Estimated Useful Life | 7 years |  |  |  |
Finite Lived Intangible Assets - Gross Carrying Amount | $ 1,897,000 |  |  |  |
Accumulated amortization | 45,000 |  |  |  |
Finite Lived Intangible Assets - Net Amount | $ 1,852,000 |  |  |  |
Customer Relationships | Roberts |  |  |  |  |
Finite-Lived Intangible Assets |  |  |  |  |
Finite-Lived Intangible Assets - Estimated Useful Life | 10 years |  |  |  |
Finite Lived Intangible Assets - Gross Carrying Amount | $ 916,000 |  |  |  |
Accumulated amortization | 15,000 |  |  |  |
Finite Lived Intangible Assets - Net Amount | $ 901,000 |  |  |  |
Customer Relationships | APC |  |  |  |  |
Finite-Lived Intangible Assets |  |  |  |  |
Finite-Lived Intangible Assets - Estimated Useful Life | 4 years |  |  |  |
Finite Lived Intangible Assets - Gross Carrying Amount | $ 430,000 |  |  |  |
Accumulated amortization | 59,000 |  |  |  |
Finite Lived Intangible Assets - Net Amount | 371,000 |  |  |  |
Other intangibles |  |  |  |  |
Finite-Lived Intangible Assets |  |  |  |  |
Finite Lived Intangible Assets - Gross Carrying Amount | 288,000 |  |  |  |
Accumulated amortization | 169,000 |  |  |  |
Finite Lived Intangible Assets - Net Amount | $ 119,000 |  |  |  |

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