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Related Party Transactions (Details) (USD $)
 6 Months Ended 1 Months Ended 6 Months Ended 12 Months Ended 6 Months Ended 6 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Mar. 31, 2012
Golsen Group [Member]
Jan. 31, 2012
Golsen Group [Member]
Mar. 31, 2011
Golsen Group [Member]
Jun. 30, 2011
Golsen Group [Member]
Dec. 31, 2010
Golsen Group [Member]
Jun. 30, 2011
Golsen Group [Member]
Debentures [Member]
Dec. 31, 2010
Golsen Group [Member]
Debentures [Member]
Jun. 30, 2012
Landmark [Member]
Jun. 30, 2011
Landmark [Member]
Jun. 30, 2012
LLC [Member]
Jun. 30, 2012
Texas Real Estate [Member]
Sep. 30, 2011
Texas Real Estate [Member]
Landmark [Member]
Jun. 30, 2012
Put Option [Member]
Texas Real Estate [Member]
Landmark [Member]
Jun. 30, 2012
Warrant [Member]
Texas Real Estate [Member]
Landmark [Member]
Feb. 07, 2012
Warrant [Member]
Texas Real Estate [Member]
Landmark [Member]
Related Party Transactions (Textual) [Abstract]                                  
Interest paid relating to the debentures       $ 137,500                          
Interest Accrued             137,500                    
Dividends on preferred stocks 300,000 305,000 300,000   300,000                        
Amount of Debentures sold by a related party to a third party         3,000,000                        
Interest expense relating to the debentures           55,000                      
Debentures held by Golsen Group               2,000,000 5,000,000                
Purchase price                     2,250,000     2,500,000      
Percentage of return on purchase price                   10.00%     10.00%        
Put option exercise period                             May exercise during the sixth year following the purchase of the Texas Real Estate    
Maximum number of shares available to purchase under warrants                               1,000,000  
Purchase price per share of Landmark stock under the warrant                               $ 1.00  
Landmark's 12 month average closing price per common stock share                                 $ 0.11
Amount of contribution to a LLC                       1,000,000          
Loan made by a related party                       2,000,000          
Principal amount of membership interest of the LLC sold for a promissory note                       $ 1,100,000