Intangible Assets - Amortization (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Mar. 31, 2025
Amortization related to intangible assets
Amortization in cost of sales - product	$ 14,502	$ 14,942	$ 28,867	$ 30,195
Future amortization expense of intangible assets
2026 (six months)	28,663		28,663
2027	56,879		56,879
2028	54,552		54,552
2029	51,708		51,708
2030	44,337		44,337
2031	43,608		43,608
Thereafter	544,768		544,768
Total	824,515		824,515		$ 851,347
Depreciation and amortization
Amortization related to intangible assets
Amortization in cost of sales - product	13,295	13,854	26,463	28,099
Cost of sales - product
Amortization related to intangible assets
Amortization in cost of sales - product	0	37	0	37
Interest expense
Amortization related to intangible assets
Amortization in cost of sales - product	1,146	990	2,281	1,936
Operating expenses
Amortization related to intangible assets
Amortization in cost of sales - product	$ 61	$ 61	$ 123	$ 123