Valuation Accounts (Tables)

9 Months Ended

Sep. 30, 2018

Revenue Recognition And Valuation Accounts [Abstract]

Schedule of Allowance for Contractual Discounts and Estimated Uncompensated Care as a Percentage of Gross Segment Accounts Receivable

The allowance for contractual discounts and estimated uncompensated care (expressed as a percentage of gross segment accounts receivable) as of the dates listed below was as follows: 

	September 30, 2018	December 31, 2017
Allowance for Contractual Discounts	48%	53%
Allowance for Uncompensated Care	26%	24%