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ESTIMATED FAIR VALUE OF FINANCIAL INSTRUMENTS
6 Months Ended
Jun. 30, 2017
Fair Value Disclosures [Abstract]  
ESTIMATED FAIR VALUE OF FINANCIAL INSTRUMENTS
ESTIMATED FAIR VALUE OF FINANCIAL INSTRUMENTS
Cash, cash equivalents, accounts receivable, accounts payable and accrued liabilities. These carrying amounts approximate fair value because of the short maturity of the instruments or because the carrying value is equal to the fair value of those instruments on the balance sheet date.
Term Loan Facility due 2021. Because the variable interest rates of these loans approximate current market rates, the fair values of the loans borrowed under this facility approximate their carrying values.