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Seismic Equipment Lease Pool and Property and Equipment (Tables) | 12 Months Ended
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Jan. 31, 2013
Seismic Equipment Lease Pool and Property and Equipment [Abstract] |
Schedule of seismic equipment lease pool and property and equipment |
|  | As of January 31, |
|  | 2013 |  |  | 2012 |
Recording channels |  | $ | 126,600 |  |  | $ | 110,730 |
Other peripheral equipment |  |  | 114,795 |  |  |  | 112,763 |
Cost of seismic equipment lease pool |  |  | 241,395 |  |  |  | 223,493 |
Land and buildings |  |  | 366 |  |  |  | 366 |
Furniture and fixtures |  |  | 8,899 |  |  |  | 8,020 |
Autos and trucks |  |  | 748 |  |  |  | 680 |
Cost of property and equipment |  |  | 10,013 |  |  |  | 9,066 |
Cost of seismic equipment lease pool and property and equipment |  |  | 251,408 |  |  |  | 232,559 |
Less accumulated depreciation |  |  | (131,800 | ) |  |  | (112,182 | )
Net book value of seismic equipment lease pool and property and equipment |  | $ | 119,608 |  |  | $ | 120,377 |
Location of seismic equipment lease pool and property and equipment |
|  | As of January 31, |
|  | 2013 |  |  | 2012 |
Location of seismic equipment lease pool and property and equipment (in thousands): |  |  |  |  |  |  |  |
United States |  | $ | 40,908 |  |  | $ | 65,922 |
Canada |  |  | 22,639 |  |  |  | 23,856 |
Latin America |  |  | 23,109 |  |  |  | 21,963 |
Australia |  |  | 7,973 |  |  |  | 2,553 |
Russia |  |  | 3,708 |  |  |  | 2,323 |
Singapore |  |  | 9,433 |  |  |  | 3,352 |
United Kingdom |  |  | 329 |  |  |  | 232 |
Europe |  |  | 11,509 |  |  |  | 176 |
Net book value of seismic equipment lease pool and property and equipment |  | $ | 119,608 |  |  | $ | 120,377 |

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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 the useful life and salvage value of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 13 -Subparagraph b -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 5 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: 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 4: 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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