Revenue Recognition (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenue Recognition
Net revenues	$ 312,033	$ 280,819	$ 573,320	$ 518,289
Patient Care
Revenue Recognition
Net revenues	265,670	236,787	485,488	432,469
Patient Care | Operating Segments
Revenue Recognition
Net revenues	265,670	236,787	485,488	432,469
Patient Care | Medicare | Operating Segments
Revenue Recognition
Net revenues	83,013	74,248	148,867	131,583
Patient Care | Medicaid | Operating Segments
Revenue Recognition
Net revenues	49,334	43,688	88,606	77,736
Patient Care | Commercial insurance / managed care (excluding Medicare and Medicaid managed care) | Operating Segments
Revenue Recognition
Net revenues	88,801	79,769	166,144	149,432
Patient Care | VA | Operating Segments
Revenue Recognition
Net revenues	25,393	21,633	46,442	41,397
Patient Care | Private Pay | Operating Segments
Revenue Recognition
Net revenues	19,129	17,449	35,429	32,321
Products & Services
Revenue Recognition
Net revenues	109,796	98,932	205,940	187,725
Products & Services | Operating Segments
Revenue Recognition
Net revenues	46,363	44,032	87,832	85,820
Products & Services | Distribution services, net of intersegment revenue eliminations | Operating Segments
Revenue Recognition
Net revenues	35,978	33,275	67,368	63,935
Products & Services | Therapeutic solutions | Operating Segments
Revenue Recognition
Net revenues	$ 10,385	$ 10,757	$ 20,464	$ 21,885