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CONCENTRATION OF RISK	12 Months Ended
CONCENTRATION OF RISK	Dec. 31, 2017
Risks and Uncertainties [Abstract]
Concentration of Risk	CONCENTRATION OF RISK Customer and Credit Concentration Risk The Company provides trade credit to its customers in the normal course of business. One commercial payor, United Healthcare, accounted for approximately 18%, 24% and 26% of revenue during the years ended December 31, 2017, 2016 and 2015, respectively. Medicare accounted for 7%, 8% and 7% of revenue during the years ended December 31, 2017, 2016 and 2015, respectively.