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Condensed Consolidated Balance Sheets - USD ($)
$ in Thousands
Jun. 30, 2018
Dec. 31, 2017
Current assets:    
Cash and cash equivalents $ 28,726 $ 26,584
Marketable securities available-for-sale 187,317 165,270
Accounts and other receivables 1,304 854
Inventories 5,112 312
Intangible assets, net   1,306
Prepaid expenses and other current assets 3,883 3,697
Total current assets 226,342 198,023
Property and equipment, net 16,240 16,619
Intangible assets, net 16,364  
Goodwill 2,189 2,244
Restricted cash 624 629
Other assets 2,104 1,270
Total assets 263,863 218,785
Current liabilities:    
Accounts payable 3,314 4,539
Accrued research and development 4,121 4,359
Accrued liabilities 11,087 9,695
Other current liabilities 7,000  
Total current liabilities 25,522 18,593
Long-term debt, net 99,771  
Other long-term liabilities 7,257 643
Total liabilities 132,550 19,236
Commitments and contingencies (Note 6)
Stockholders’ equity:    
Preferred stock: $0.001 par value; 5,000 shares authorized at June 30, 2018 and December 31, 2017; no shares issued and outstanding at June 30, 2018 and December 31, 2017
Common stock: $0.001 par value; 139,000 shares authorized at June 30, 2018 and December 31, 2017; 62,608 and 61,533 shares issued and outstanding at June 30, 2018 and December 31, 2017, respectively 63 62
Additional paid-in capital 1,118,487 1,107,693
Accumulated other comprehensive loss (1,510) (881)
Accumulated deficit (985,727) (907,325)
Total stockholders’ equity 131,313 199,549
Total liabilities and stockholders’ equity $ 263,863 $ 218,785