Segment and Related Information - Financial information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Net revenue
Net revenues	$ 261,287	$ 237,470
Material costs	85,592	75,170
Personnel expenses	101,675	89,880
Depreciation & amortization	7,955	7,998
(Loss) income from operations	(2,545)	2,021
Patient Care
Net revenue
Net revenues	219,818	195,682
Material costs	70,976	59,922
Personnel expenses	86,409	75,754
Other expenses	40,696	36,141
Depreciation & amortization	4,744	4,815
(Loss) income from operations	16,993	19,050
Patient Care | Operating Segments
Net revenue
Net revenues	219,818	195,682
Material costs	59,918	51,617
(Loss) income from operations	16,993	19,050
Patient Care | Intersegment Eliminations
Net revenue
Net revenues	0	0
Material costs	11,058	8,305
Products & Services
Net revenue
Net revenues	96,144	88,835
Material costs	69,291	62,295
Personnel expenses	15,266	14,126
Other expenses	7,057	5,803
Depreciation & amortization	2,023	1,935
(Loss) income from operations	2,507	4,676
Products & Services | Operating Segments
Net revenue
Net revenues	41,469	41,788
Material costs	25,674	23,553
(Loss) income from operations	2,507	4,676
Products & Services | Intersegment Eliminations
Net revenue
Net revenues	54,675	47,047
Material costs	$ 43,617	$ 38,742