Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash flows from operating activities
Net earnings	$ 25,616	$ 5,694
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	21,362	6,592
Navitor investment R&D expense (see Note 5)	0	15,000
Other income from Navitor (see Note 5)	(12,888)	0
Amortization of deferred financing costs and debt discount	526	4,287
Realized gains from sales of marketable securities	0	(216)
Amortization of premium/discount on marketable securities	(360)	(1,706)
Change in fair value of contingent consideration	665	1,020
Other noncash adjustments, net	84	(1,202)
Share-based compensation expense	4,025	4,371
Deferred income tax benefit	(13,011)	(2,565)
Changes in operating assets and liabilities:
Accounts receivable	3,812	13,805
Inventories	(2,468)	(1,048)
Prepaid expenses and other assets	1,061	(368)
Accrued product returns and rebates	7,457	2,544
Accounts payable and other liabilities	(29,479)	(10,008)
Contingent consideration	2,100	0
Net cash provided by operating activities	4,302	36,200
Cash flows from investing activities
Purchases of marketable securities	(98,063)	(119,063)
Sales and maturities of marketable securities	28,927	49,579
Purchases of property and equipment and deferred legal fees paid	(851)	(1,961)
Net cash used in investing activities	(69,987)	(71,445)
Cash flows from financing activities
Payment of contingent consideration	(22,900)	0
Proceeds from issuance of common stock	866	2,247
Net cash (used in) provided by financing activities	(22,034)	2,247
Net change in cash and cash equivalents	(87,719)	(32,998)
Cash and cash equivalents at beginning of year	203,434	288,640
Cash and cash equivalents at end of period	115,715	255,642
Supplemental cash flow information
Cash paid for interest on convertible notes	1,258	1,258
Cash paid for income taxes	478	301
Cash paid for operating leases	2,949	1,834
Noncash investing and financing activities
Lease assets and tenant receivable obtained for new operating leases	27	1,432
Deferred legal fees and fixed assets included in accounts payable and accrued expenses	0	160
Capital Expenditures Incurred but Not yet Paid	$ 549	$ 0