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Consolidated Balance Sheets - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Current assets:    
Cash and cash equivalents $ 155,700 $ 171,223
Short-term investments 266,308 233,967
Accounts receivable, net ($12,088 and $10,930 from related parties) 16,299 17,401
Inventories 40,436 31,015
Prepaid expenses and other current assets 14,083 20,453
Total current assets 492,826 474,059
Restricted time deposits 2,072 2,072
Long-term investments 4,348 167,796
Property and equipment, net 20,605 28,277
Equity method investment in unconsolidated variable interest entity 5,061 3,825
Operating lease right-of-use assets 79,893 91,112
Other assets 5,282 6,680
Total assets 610,087 773,821
Current liabilities:    
Accounts payable 30,758 26,097
Accrued and other current liabilities ($63,886 and $4 to a related party) 219,773 172,599
Deferred revenue ($9,259 and $3,201 to related parties) 12,739 15,857
Operating lease liabilities, current 10,292 10,944
Total current liabilities 273,562 225,497
Product development obligations 16,917 17,613
Deferred revenue, net of current ($31,044 and $25,891 to a related party) 185,722 186,801
Operating lease liabilities, non-current 79,593 88,776
Liability related to sale of future revenues, non-current 49,333
Other long-term liabilities 6,440 26,021
Total liabilities 611,567 544,708
Commitments and Contingencies (Note 10)  
Stockholders' equity (deficit);    
Preferred stock, $0.01 par value; 125,000 shares authorized; no shares issued and outstanding at December 31, 2022 and 2021
Common stock, $0.01 par value; 225,000 shares authorized at December 31, 2022 and 2021; 94,166 and 92,881 shares issued and outstanding at December 31, 2022 and 2021 942 929
Additional paid-in capital 1,541,019 1,476,414
Accumulated other comprehensive loss (5,720) (4,163)
Accumulated deficit (1,557,688) (1,264,034)
Total stockholders' equity (deficit) (21,447) 209,146
Non-controlling interests 19,967 19,967
Total equity (deficit) (1,480) 229,113
Total liabilities, stockholders' equity (deficit) and non-controlling interests $ 610,087 $ 773,821