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5. Notes Payable (Tables)
9 Months Ended
Feb. 28, 2014
Notes Payable
    February 28,     May 31,  
    2014     2013  
Term note payable to International Bank of Commerce, interest rate of 4.5%, monthly principal and interest payments of $171,760, maturing January 31, 2019   $ 9,060,440     $ -  
                 
Revolving note payable to International Bank of Commerce, prime rate of interest plus 0.5% but not less than 4%, due January 31, 2016     725,000       -  
                 
Mortgage note payable by GRE to International Bank of Commerce, interest rate of 4.5%, monthly principal and interest payments of $26,115, due January 31, 2019     3,398,228       -  
                 
Note payable to The F&M Bank & Trust Company, prime rate of interest but not less than 4.5%, paid February 3, 2014       -         4,593,650  
                 
Note payable by GRE to The F&M Bank & Trust Company, prime rate of interest but not less than 4.75%, paid February 3, 2014     -       3,366,108  
                 
Capitalized lease payable, 5% interest     -       381,727  
                 
Note payable to Robert Rosene, 7.5% interest, due January 15, 2015     2,066,000       2,066,000  
                 
Note payable to Warren Kruger, 7.5% interest     -       527,716  
                 
Other note payable     44,826       66,979  
      15,294,494       11,002,180  
Less: Current portion     (3,956,067 )     (1,344,160 )
Long-term debt   $ 11,338,427     $ 9,658,020