Segment and Related Information - Financial Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Net revenue
Net revenues	$ 280,819	$ 233,434	$ 518,289	$ 467,173
Material costs	89,271	69,972	164,441	147,213
Personnel expenses	97,549	73,822	187,429	163,007
Depreciation & amortization	8,007	8,879	16,005	17,710
Segment income from operations	20,094	38,861	22,115	29,688
Patient Care
Net revenue
Net revenues	236,787	195,859	432,469	386,042
Material costs	71,717	55,236	131,639	114,913
Personnel expenses	83,198	63,576	158,952	139,921
Other expenses	37,445	13,601	73,586	51,749
Depreciation & amortization	4,787	4,827	9,602	9,303
Segment income from operations	39,640	58,619	58,690	70,156
Patient Care | Operating segments
Net revenue
Net revenues	236,787	195,859	432,469	386,042
Material costs	62,631	50,489	114,290	103,613
Patient Care | Intersegments
Net revenue
Material costs	9,086	4,747	17,349	11,300
Products and Services
Net revenue
Net revenues	98,932	80,441	187,725	170,019
Material costs	72,454	57,602	134,707	121,188
Personnel expenses	14,351	10,246	28,477	23,086
Other expenses	6,763	4,337	12,566	12,657
Depreciation & amortization	1,963	2,498	3,898	5,250
Segment income from operations	3,401	5,758	8,077	7,838
Products and Services | Operating segments
Net revenue
Net revenues	44,032	37,575	85,820	81,131
Material costs	26,640	19,483	50,151	43,600
Products and Services | Intersegments
Net revenue
Net revenues	54,900	42,866	101,905	88,888
Material costs	$ 45,814	$ 38,119	$ 84,556	$ 77,588