BASIS OF PRESENTATION (Tables)

6 Months Ended

Jun. 30, 2017

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Accounts Receivable Aging

The following table sets forth the aging of our net accounts receivable (net of allowance for contractual adjustments, and prior to allowance for doubtful accounts), aged based on date of service and categorized based on the three primary overall types of accounts receivable characteristics (in thousands):

	June 30, 2017							December 31, 2016
	0 - 180 days		Over 180 days		Total			0 - 180 days		Over 180 days		Total
Government	$	18,714	$	7,512	$	26,226		$	19,891	$	8,278	$	28,169
Commercial	84,190		23,589		107,779			97,744		19,848		117,592
Patient	5,195		9,540		14,735			3,955		6,825		10,780
Gross accounts receivable	$	108,099	$	40,641	148,740			$	121,590	$	34,951	156,541
Allowance for doubtful accounts					(45,651		)					(44,730		)
Net accounts receivable					$	103,089						$	111,811