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Condensed Consolidated Balance Sheets - USD ($)
$ in Thousands
Mar. 31, 2018
Dec. 31, 2017
Current assets:    
Cash and cash equivalents $ 36,067 $ 26,584
Marketable securities available-for-sale 214,713 165,270
Accounts and other receivables 763 854
Inventories 550 312
Intangible assets, net   1,306
Prepaid expenses and other current assets 3,303 3,697
Total current assets 255,396 198,023
Property and equipment, net 17,064 16,619
Intangible assets, net 18,662  
Goodwill 2,309 2,244
Restricted cash 635 629
Other assets 1,267 1,270
Total assets 295,333 218,785
Current liabilities:    
Accounts payable 2,279 4,539
Accrued research and development 4,443 4,359
Accrued liabilities 9,820 9,695
Other current liabilities 7,000  
Total current liabilities 23,542 18,593
Long-term debt, net 99,232  
Other long-term liabilities 6,672 643
Total liabilities 129,446 19,236
Commitments and contingencies (Note 6)
Stockholders’ equity:    
Preferred stock: $0.001 par value; 5,000 shares authorized at March 31, 2018 and December 31, 2017; no shares issued and outstanding at March 31, 2018 and December 31, 2017
Common stock: $0.001 par value; 139,000 shares authorized at March 31, 2018 and December 31, 2017; 62,254 and 61,533 shares issued and outstanding at March 31, 2018 and December 31, 2017, respectively 62 62
Additional paid-in capital 1,112,321 1,107,693
Accumulated other comprehensive loss (213) (881)
Accumulated deficit (946,283) (907,325)
Total stockholders’ equity 165,887 199,549
Total liabilities and stockholders’ equity $ 295,333 $ 218,785