Quarterly report pursuant to Section 13 or 15(d)

RECENT ACCOUNTING PRONOUNCEMENTS - Receivables and Allowance for Doubtful Accounts (Details)

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RECENT ACCOUNTING PRONOUNCEMENTS - Receivables and Allowance for Doubtful Accounts (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Accounts, Notes, Loans and Financing Receivable, Net [Roll Forward]    
Balance at December 31, 2017 $ 14,706  
Charged to costs and expenses 932 $ 61
Net (deductions) recoveries (2,115)  
Balance at March 31, 2018 $ 13,523