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SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS (Details) - Allowance for Credit Losses [Member] - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
 [1]
Dec. 31, 2019
Dec. 31, 2018
Movement in Valuation Allowances and Reserves [Roll Forward]      
Beginning Balance $ 2,698 $ 2,672 $ 2,273
Additions Charged to Cost and Expenses 4,623 4,858 4,603
Additions Charged to Other Accounts 0 0 0
Deductions [2] 5,313 4,832 4,204
Ending Balance $ 2,008 $ 2,698 [1] $ 2,672
[1] Related to patient accounts receivable and accounts receivable-other.
[2] Uncollectible accounts written off, net of recoveries.