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Legal Contingencies (Details Textual) (USD $)
 1 Months Ended 1 Months Ended 1 Months Ended 3 Months Ended 1 Months Ended
Dec. 31, 2011
Jan. 31, 2009
Jul. 31, 2012
Jun. 30, 2012
Tampa Bay Nutraceutical Company [Member]
Jul. 31, 2012
Payment to parent company
Jul. 31, 2012
Amount of claim of indebt
Jul. 31, 2012
Amount Included in Cost of Revenue [Member]
Dec. 31, 2011
GPS [Member]
Oct. 31, 2009
GPS [Member]
Apr. 30, 2009
GPS [Member]
Jan. 31, 2009
GPS [Member]
Jul. 31, 2012
GPS [Member]
Mar. 31, 2008
GPS [Member]
Procurement and Construction Services Related to Nebraska Project [Member]
Dec. 31, 2011
Delta T Corporation [Member]
Feb. 28, 2010
Delta T Corporation [Member]
Apr. 30, 2009
Delta T Corporation [Member]
Sep. 30, 2007
Delta T Corporation [Member]
Legal Contingencies (Textual) [Abstract]                                  
GPS Mechanics Lien Nebraska Project                         $ 23,800,000        
Net sale proceeds held by Bankruptcy Court                 5,500,000                
Project close out agreement amount                     3,500,000            
Lien rights assigned to GPS                         21,200,000        
Arbitration award in favor of DCR                   6,800,000              
Lawsuit Filing Dates                           December, 2011   April, 2009  
Damages sought by TBN       42,000,000       6,100,000                  
Damages sought by DCR $6.1 million plus interest                                
Allegations by Tampa Bay                                 Tampa Bay alleges compensatory damages in excess of $42 million
Provisions for Loss                       0          
Assignment to GPS of first receipts of Delta-T   3,500,000                              
Amended amount of complaint filed against surety bonding company                             6,800,000    
Total payment made     $ 1,875,000   $ 275,000 $ 1,800,000 $ 1,600,000