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Consolidated Balance Sheets - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Current assets:    
Cash and cash equivalents $ 112,279 $ 141,714
Marketable securities 558,245 509,199
Accounts receivable 126,575 57,406
Inventory 17,288 10,864
Other current assets 16,647 18,594
Total current assets 831,034 737,777
Marketable securities 299,654 216,028
Operating lease assets 74,364  
Restricted equity securities 55,868  
Property and equipment, net 41,914 33,869
Restricted cash 3,206 5,477
Total assets 1,306,040 993,151
Current liabilities:    
Accounts payable and accrued liabilities 141,285 86,377
Convertible senior notes 408,807  
Other current liabilities 15,195 1,856
Total current liabilities 565,287 88,233
Convertible senior notes 408,807 388,496
Noncurrent operating lease liabilities 86,756  
Other long-term liabilities 17,074 35,657
Total liabilities 669,117 512,386
Stockholders’ equity:    
Preferred stock, $0.001 par value; 5,000 shares authorized; no shares issued and outstanding
Common stock, $0.001 par value; 220,000 shares authorized; issued and outstanding shares were 92,272 and 90,797 at December 31, 2019 and 2018, respectively 92 91
Additional paid-in capital 1,768,118 1,660,361
Accumulated other comprehensive income (loss) 1,413 (1,932)
Accumulated deficit (1,132,700) (1,177,755)
Total stockholders’ equity 636,923 480,765
Total liabilities and stockholders’ equity $ 1,306,040 $ 993,151