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US SEISMIC SYSTEMS, INC. (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended
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Mar. 31, 2013
US SEISMIC SYSTEMS, INC. [Abstract] |
Preferred stock purchase USSI | $ 2,500
Subsidiary or Equity Method Investee, Cumulative Percentage Ownership after All Transactions | 95.00%
Preferred share purchase - USSI - future | $ 2,500
Cumulative Percentage Ownership after All Future Transactions | 95.60%
fully diluted ownership | 87.90%

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- Definition Fully diluted ownership + References No definition available. + Details
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- Definition USSI preferred stock purchase + References No definition available. + Details
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- Details
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- Definition Percentage of subsidiary's or equity method investee's stock owned by parent immediately after all stock transactions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section H + Details
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