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US SEISMIC SYSTEMS, INC. (Details) (USD $) In Thousands, except Share data, unless otherwise specified	0 Months Ended	9 Months Ended		0 Months Ended
	Jul. 30, 2012	Sep. 30, 2012	Jun. 30, 2012	Nov. 01, 2012 Increased equity investment [Member]	Jul. 30, 2012 Increased equity investment [Member]
Subsequent Event [Line Items]
Preferred stock purchase USSI - April 2012		$ 2,250
Preferred stock purchase USSI	$ 2,500	$ 2,500		$ 2,500
Subsidiary or Equity Method Investee, Cumulative Percentage Ownership after All Transactions	93.60%	92.00%
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized			1,180,000
fully diluted ownership				85.10%	83.20%

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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