Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Operating activities
Net income	$ 223,281	$ 147,252
Adjustments to reconcile net income to net cash flows from operating activities:
Depreciation, amortization and accretion	45,028	36,048
Impairment of long-lived assets	138,050	0
Asset retirement obligation acceleration	0	1,229
Amortization of debt related costs	3,227	737
Changes in fair value of contingent assets and liabilities	(9,475)	25,400
Provision for excess and obsolete inventory	5,251	4,980
Stock-based compensation	36,335	21,138
Gain on sale of RELISTOR licensed intangible asset associated with net sales royalties	(51,789)	0
Deferred taxes	(57,649)	14,461
Long-term indemnification receivable	3,929	668
Long-term income tax payable and other long-term liabilities	(2,744)	(538)
Other	3,118	3,188
(Decreases) increases in cash from operating assets and liabilities:
Accounts receivable	(43,044)	(112,031)
Inventory	(25,995)	(4,666)
Other current assets	2,496	314
Other long-term assets	0	(533)
Accounts payable	12,150	8,409
Accrued expenses and other liabilities	(89,196)	30,374
Net cash provided by operating activities	192,973	176,429
Investing activities
Capital expenditures	(34,486)	(13,623)
Proceeds from sale of assets, net	97,839	1,800
Acquisition of assets, net	(45,345)	0
Net cash provided by (used in) investing activities	18,008	(11,823)
Financing activities
Payments on long-term debt and other borrowings	(685)	(7,891)
Contingent value rights settlement	(3,700)	0
Proceeds from stock option exercises	3,462	7,538
Proceeds from issuance of common stock	1,933	1,375
Payments for minimum statutory tax withholding related to net share settlement of equity awards	(13,621)	(7,171)
Net cash used in financing activities	(12,612)	(6,149)
Effect of foreign exchange rates on cash, cash equivalents and restricted cash	139	(266)
Net increase in cash, cash equivalents and restricted cash	198,508	158,191
Cash, cash equivalents and restricted cash, beginning of period	417,241	100,651
Cash, cash equivalents and restricted cash, end of period	615,749	258,842
Reconciliation to amounts within the condensed consolidated balance sheets
Cash and cash equivalents	614,131	257,259
Restricted cash included in other long-term assets	1,618	1,583
Cash, cash equivalents and restricted cash at end of period	615,749	258,842
Schedule of non-cash investing and financing activities
Additions of property, plant and equipment included in liabilities	8,573	2,303
Right-of-use asset obtained in exchange for operating lease liabilities	$ 29,625	$ 0