Accounts Receivable, Net - Schedule of accounts receivable, net (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Accounts Receivable, net
Gross charges before estimates for implicit price concessions	$ 183,224	$ 177,804
Less estimates for implicit price concessions:
Payor disallowances	(37,211)	(39,343)
Patient non-payments	(7,890)	(7,042)
Accounts receivable, gross	138,123	131,419
Allowance for doubtful accounts	(2,011)	(2,823)
Accounts receivable, net	136,112	128,596
Patient Care
Accounts Receivable, net
Gross charges before estimates for implicit price concessions	161,888	156,504
Less estimates for implicit price concessions:
Payor disallowances	(37,211)	(39,343)
Patient non-payments	(7,890)	(7,042)
Accounts receivable, gross	116,787	110,119
Allowance for doubtful accounts	0	0
Accounts receivable, net	116,787	110,119
Products & Services
Accounts Receivable, net
Gross charges before estimates for implicit price concessions	21,336	21,300
Less estimates for implicit price concessions:
Payor disallowances	0	0
Patient non-payments	0	0
Accounts receivable, gross	21,336	21,300
Allowance for doubtful accounts	(2,011)	(2,823)
Accounts receivable, net	$ 19,325	$ 18,477