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CONTINGENCIES (Details) |  |  | 1 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Mar. 04, 2016 USD ($) | Feb. 01, 2016 USD ($) project | May. 31, 2015 USD ($) | Mar. 31, 2008 USD ($) | Jan. 31, 2016 USD ($) | Jan. 31, 2015 USD ($)
Loss Contingencies |  |  |  |  |  |
Payment received from proceeds deposited with bankruptcy court |  |  |  |  | $ 1,600,000 |
Aggregate amount self insurance liability reserved |  |  |  |  | $ 1,299,000 |
PPS Engineers, Inc. claims lawsuit | Pending Litigation |  |  |  |  |  |
Loss Contingencies |  |  |  |  |  |
Amount of damages sought by plaintiff |  | $ 749,000 |  |  |  |
Number of significant project locations involved in the lawsuit | project |  | 1 |  |  |  |
Damages sought against bond of the project |  | $ 1,569,000 |  |  |  |
Counter claim amount sought | $ 2,473,000 |  |  |  |  |
GPS |  |  |  |  |  |
Loss Contingencies |  |  |  |  |  |
GPS mechanics lien against Nebraska project |  |  |  | $ 23,800,000 |  |
Net proceeds held by the bankruptcy court |  |  |  |  |  | $ 5,500,000
Payment received from proceeds deposited with bankruptcy court |  |  | $ 1,600,000 |  |  |

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