Accounts Receivable, Net (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2018	Dec. 31, 2017
Accounts Receivable, net
Gross charges before estimates for implicit price concessions	$ 229,683	$ 177,804
Less estimates for implicit price concessions:
Payor disallowances	(58,094)	(39,343)
Patient non-payments	(9,589)	(7,042)
Accounts receivable, gross	162,000	131,419
Allowance for doubtful accounts	(2,641)	(2,823)	$ (2,272)	$ (14,065)
Accounts receivable, net	159,359	128,596
Increase in allowance for doubtful accounts	300
Patient Care
Accounts Receivable, net
Gross charges before estimates for implicit price concessions	202,132	156,504
Less estimates for implicit price concessions:
Payor disallowances	(58,094)	(39,343)
Patient non-payments	(9,589)	(7,042)
Accounts receivable, gross	134,449	110,119
Accounts receivable, net	134,449	110,119
Products & Services
Accounts Receivable, net
Gross charges before estimates for implicit price concessions	27,551	21,300
Less estimates for implicit price concessions:
Accounts receivable, gross	27,551	21,300
Allowance for doubtful accounts	(2,641)	(2,823)
Accounts receivable, net	$ 24,910	$ 18,477