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SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS (Details) - Allowance for Doubtful Accounts [Member] - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
 [1]
Dec. 31, 2017
Dec. 31, 2016
Movement in Valuation Allowances and Reserves [Roll Forward]      
Beginning Balance $ 2,273 $ 1,792 $ 1,642
Additions Charged to Cost and Expenses 4,603 3,672 3,906
Additions Charged to Other Accounts 0 0 0
Deductions [2] 4,204 3,191 3,756
Ending Balance $ 2,672 $ 2,273 [1] $ 1,792
[1] Related to patient accounts receivable and accounts receivable-other.
[2] Uncollectible accounts written off, net of recoveries.