Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Operating Activities
Net income	$ 158,246	$ 153,295
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	24,762	23,607
Loss on disposal of property and equipment	171	79
Deferred income taxes	14,021	11,296
Amortization of debt origination costs	2,613	2,811
Stock-based compensation costs	9,756	7,331
Loss on extinguishment of debt	0	2,122
Non-cash operating lease cost	4,697	5,034
Other	447	0
Changes in operating assets and liabilities, net of effects from acquisition:
Accounts receivable	(17,078)	(21,848)
Inventories	(38,587)	14,650
Prepaid expenses and other current assets	(596)	(5,622)
Accounts payable	8,892	(6,079)
Accrued liabilities	8,345	15,053
Operating lease liabilities	(4,941)	(4,807)
Other	(19)	(126)
Net cash provided by operating activities	170,729	196,796
Investing Activities
Purchases of property, plant and equipment	(5,226)	(6,481)
Acquisition of Akorn	0	(246,914)
Other	0	177
Net cash used in investing activities	(5,226)	(253,218)
Financing Activities
Term loan repayments	(55,000)	(545,000)
Proceeds from refinancing of Term Loan	0	597,000
Borrowings under revolving credit agreement	20,000	85,000
Repayments under revolving credit agreement	(20,000)	(85,000)
Payments of debt costs	0	(6,111)
Payments of finance leases	(2,058)	(2,145)
Proceeds from exercise of stock options	7,173	5,718
Fair value of shares surrendered as payment of tax withholding	(5,466)	(2,916)
Repurchase of common stock	(50,000)	0
Net cash (used in) provided by financing activities	(105,351)	46,546
Effects of exchange rate changes on cash and cash equivalents	(979)	(1,408)
Increase (decrease) in cash and cash equivalents	59,173	(11,284)
Cash and cash equivalents - beginning of period	27,185	32,302
Cash and cash equivalents - end of period	86,358	21,018
Supplemental Cash Flow Information [Abstract]
Interest paid	36,716	36,279
Income taxes paid	$ 27,632	$ 42,977