CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 23,430	$ 47,619
Short-term investments	299,781	363,567
Accounts receivable, net	64,336	56,847
Inventory	32,996	26,487
Income taxes receivable	6,378	2,217
Other current assets	5,161	3,822
Total current assets	432,082	500,559
Deferred income taxes, net	26,728	24,320
Intangible assets, net	562,372	595,330
Goodwill	190,183	189,662
Commercial license and other economic rights, net	10,748	10,979
Property and equipment, net	18,702	14,434
Operating lease right-of-use assets	12,951	6,892
Financing lease right-of-use assets	16,795	15,842
Other assets	3,095	4,267
Total assets	1,273,656	1,362,285
Current liabilities:
Accounts payable	7,233	3,784
Accrued liabilities	12,237	18,530
Current contingent liabilities	2,594	39,884
Deferred revenue	12,007	29,435
Current operating lease liabilities	2,181	1,885
Current financing lease liabilities	45	6,593
Total current liabilities	36,297	100,111
2023 convertible senior notes, net	316,889	442,293
Long-term contingent liabilities	6,782	9,249
Deferred income taxes, net	63,026	64,598
Long-term operating lease liabilities	11,467	5,643
Other long-term liabilities	27,129	30,866
Total liabilities	461,590	652,760
Commitments and contingencies
Stockholders' equity:
Preferred stock, $0.001 par value; 5,000 shares authorized; zero issued and outstanding at September 30, 2021 and December 31, 2020	0	0
Common stock, $0.001 par value; 60,000 shares authorized; 16,707 and 16,080 shares issued and outstanding at September 30, 2021 and December 31, 2020, respectively	17	16
Additional paid-in capital	358,418	318,358
Accumulated other comprehensive loss	(875)	(801)
Retained earnings	454,506	391,952
Total stockholders' equity	812,066	709,525
Total liabilities and stockholders' equity	$ 1,273,656	$ 1,362,285