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ALLOWANCE FOR DOUBTFUL ACCOUNTS (Tables)
 12 Months Ended
Dec. 31, 2017
Receivables [Abstract]  
Allowance for Credit Losses on Financing Receivables
Activity related to the Company's allowance for doubtful accounts is presented below:
 
Balance at Beginning of Period
 
Provision for Bad Debt
 
Deductions/ Write-Offs and Other Charges
 
Balance at End of Period
Year Ended December 31, 2017
 
 
 
 
 
 
 
Allowance for doubtful accounts
$
11,677

 
$
74,183

 
$
(72,440
)
 
$
13,420

 
 
 
 
 
 
 
 
Year Ended December 31, 2016
 
 
 
 
 
 
 
Allowance for doubtful accounts
$
1,051

 
$
53,249

 
$
(42,623
)
 
$
11,677