Revenue Recognition (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenue Recognition
Net revenues	$ 1,120,488	$ 1,001,150	$ 1,098,046
Patient Care
Revenue Recognition
Net revenues	943,328	831,603	905,691
Patient Care | Operating Segments
Revenue Recognition
Net revenues	943,328	831,603	905,691
Patient Care | Operating Segments | Medicare
Revenue Recognition
Net revenues	296,327	268,226	289,099
Patient Care | Operating Segments | Medicaid
Revenue Recognition
Net revenues	166,411	135,134	143,438
Patient Care | Operating Segments | Commercial Insurance / Managed Care (excluding Medicare and Medicaid Managed Care)
Revenue Recognition
Net revenues	327,836	296,738	323,499
Patient Care | Operating Segments | Veterans Administration
Revenue Recognition
Net revenues	89,358	76,769	89,035
Patient Care | Operating Segments | Private Pay
Revenue Recognition
Net revenues	63,396	54,736	60,620
Products & Services
Revenue Recognition
Net revenues	397,952	359,151	395,851
Products & Services | Operating Segments
Revenue Recognition
Net revenues	177,160	169,547	192,355
Products & Services | Operating Segments | Distribution services, net of intersegment revenue eliminations
Revenue Recognition
Net revenues	133,636	124,045	143,400
Products & Services | Operating Segments | Therapeutic solutions
Revenue Recognition
Net revenues	$ 43,524	$ 45,502	$ 48,955