Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash flows from operating activities
Net earnings	$ 50,982	$ 96,182
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	19,888	12,621
Navitor investment R&D expense	15,000	0
Amortization of deferred financing costs and debt discount	13,037	12,351
Realized gains from sales of marketable securities	(221)	(3,636)
Amortization of premium/discount on marketable securities	(845)	(3,217)
Change in fair value of contingent consideration	(7,650)	200
Other noncash adjustments, net	(22)	794
Share-based compensation expense	13,874	13,440
Deferred income tax provision	(479)	(280)
Changes in operating assets and liabilities:
Accounts receivable	7,352	(26,840)
Inventories	(9,331)	(5,437)
Prepaid expenses and other assets	(13,351)	(11,734)
Accrued product returns and rebates	5,856	21,166
Accounts payable and other liabilities	(15,726)	856
Net cash provided by operating activities	78,364	106,466
Cash flows from investing activities
Purchases of marketable securities	(307,634)	(87,890)
Sales and maturities of marketable securities	152,546	319,421
Purchase of property and equipment and deferred legal fees paid	(2,005)	(3,375)
Acquisition of USWM, net of cash acquired	(950)	(297,200)
Investment in Navitor Pharmaceuticals, Inc.	0	(15,000)
Net cash used in investing activities	(158,043)	(84,044)
Cash flows from financing activities
Proceeds from issuance of common stock	5,520	1,546
Proceeds from governmental loan and grant	800	0
Payments on finance lease liability	0	(1,056)
Net cash provided by financing activities	6,320	490
Net change in cash and cash equivalents	(73,359)	22,912
Cash and cash equivalents at beginning of year	288,640	181,381
Cash and cash equivalents at end of period	215,281	204,293
Supplemental cash flow information
Cash paid for interest on convertible notes	1,887	2,516
Cash paid for income taxes	25,111	42,284
Cash paid for operating leases	7,613	5,152
Noncash investing and financing activities
Contingent consideration liability accrued in USWM Acquisition	0	115,900
Lease assets and tenant receivable obtained for new leases	4,120	25,225
Deferred legal fees and fixed assets included in accounts payable and accrued expenses	$ 186	$ 352