Tax Receivable Agreements (Aggregate Payments Due Under Tax Receivable Agreements (Details) $ in Thousands	Mar. 31, 2021 USD ($)
Related Party Transaction [Line Items]
2022	$ 21,412
2023	46,901
2024	37,399
2025	73,822
2026	123,169
Thereafter	152,885
Gross expected payments	455,588
Less: Amounts representing discount	(101,943)
Total tax receivable agreement obligation	353,645
Less: Current portion due (included in accrued expenses)	(21,412)
Tax receivable agreement long-term obligation	332,233
Related Party Tax Receivable Agreements [Member]
Related Party Transaction [Line Items]
2022	10,766
2023	11,392
2024	10,626
2025	37,213
2026	46,623
Thereafter	63,323
Gross expected payments	179,943
Less: Amounts representing discount	(66,026)
Total tax receivable agreement obligation	113,917
Less: Current portion due (included in accrued expenses)	(10,766)
Tax receivable agreement long-term obligation	103,151
McKesson Tax Receivable Agreement [Member]
Related Party Transaction [Line Items]
2022	189
2023	24,748
2024	16,478
2025	20,052
2026	57,196
Thereafter	39,785
Gross expected payments	158,448
Total tax receivable agreement obligation	158,448
Less: Current portion due (included in accrued expenses)	(189)
Tax receivable agreement long-term obligation	158,259
Other Tax Receivable Agreements [Member]
Related Party Transaction [Line Items]
2022	10,457
2023	10,761
2024	10,295
2025	16,557
2026	19,350
Thereafter	49,777
Gross expected payments	117,197
Less: Amounts representing discount	(35,917)
Total tax receivable agreement obligation	81,280
Less: Current portion due (included in accrued expenses)	(10,457)
Tax receivable agreement long-term obligation	$ 70,823