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2. ACCOUNTS RECEIVABLE (Tables)
 12 Months Ended
Dec. 31, 2014
Accounts Receivable Tables  
Changes in the allowance for doubtful accounts
    Year ended December 31,  
    2014     2013  
             
Balance at Beginning of Period   $ 14,740     $ 12,908  
Charged to costs and expenses     -       2,796  
Charged to other accounts     -       -  
Write-offs, net of recoveries     (2,796 )     (964 )
                 
Balance at End of Period   $ 11,944     $ 14,740