SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS (Details) - Allowance for Doubtful Accounts [Member] - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2019	[1]	Dec. 31, 2018		Dec. 31, 2017
Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning Balance		$ 2,672		$ 2,273		$ 1,792
Additions Charged to Cost and Expenses		4,858		4,603		3,672
Additions Charged to Other Accounts		0		0		0
Deductions	[2]	4,832		4,204		3,191
Ending Balance		$ 2,698		$ 2,672	[1]	$ 2,273

[1] Related to patient accounts receivable and accounts receivable-other.

[2] Uncollectible accounts written off, net of recoveries.