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REDEEMABLE NONCONTROLLING INTERESTS (Details Textuals) (USD $)
1 Months Ended 1 Months Ended
Jul. 31, 2011
Oct. 31, 2010
Apr. 30, 2011
Electronic Technologies Group [Member]
Jul. 31, 2011
Electronic Technologies Group [Member]
Feb. 28, 2011
Aerospace Holdings Corp. [Member]
Jul. 31, 2011
Aerospace Holdings Corp. [Member]
Business Acquisition [Line Items]            
Management's estimate of the aggregate redemption amount of all put rights $ 53,979,000 $ 55,048,000        
Estimated Redemption Amount of equity interest redeemable at fair value 31,000,000          
Acquisition of interest in the subsidiary 80.10%          
Estimated Redemption Amount of equity interest redeemable based on a multiple of future earnings $ 23,000,000          
Percentage of additional equity interest acquired in one of our subsidiaries     2.60%   8.00%  
Percentage of company total ownership interest       95.90%   80.00%