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Seismic Equipment Lease Pool and Property and Equipment (Tables) | 12 Months Ended
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Jan. 31, 2018
Property, Plant and Equipment [Abstract] |
Schedule of Seismic Equipment Lease Pool and Property and Equipment | Seismic equipment lease pool and property and equipment consisted of the following (in thousands)
| As of January 31,
| 2018 |  | 2017
Recording channels | $ | 89,397 |  |  | $ | 126,081 |
Other peripheral equipment | 84,877 |  |  | 92,920 |
Cost of seismic equipment lease pool | 174,274 |  |  | 219,001 |
Land and buildings | 3,380 |  |  | 3,379 |
Furniture and fixtures | 10,222 |  |  | 9,462 |
Autos and trucks | 722 |  |  | 675 |
Cost of property and equipment | 14,324 |  |  | 13,516 |
Cost of seismic equipment lease pool and property and equipment | 188,598 |  |  | 232,517 |
Less accumulated depreciation | (165,698 | ) |  | (188,679 | )
Net book value of seismic equipment lease pool and property and equipment | $ | 22,900 |  |  | $ | 43,838 |
Location of Seismic Equipment Lease Pool and Property and Equipment | Location of seismic equipment lease pool and property and equipment (in thousands):
| As of January 31,
| 2018 |  | 2017
United States | $ | 4,973 |  |  | $ | 16,510 |
Europe | 6,557 |  |  | 7,730 |
Canada | 2,134 |  |  | 8,525 |
Latin America | 2,390 |  |  | 2,317 |
Singapore | 4,793 |  |  | 5,321 |
Australia | 737 |  |  | 1,462 |
Russia | 1,316 |  |  | 1,973 |
Net book value of seismic equipment lease pool and property and equipment | $ | 22,900 |  |  | $ | 43,838 |

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- Definition Schedule of property plant and equipment by geographic area. + References No definition available. + Details
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- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(13)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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