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Consolidated Balance Sheets - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Current assets:    
Cash and cash equivalents $ 49,348 $ 26,584
Marketable securities available-for-sale 96,188 165,270
Accounts and other receivables, net 3,704 854
Inventories, net 19,022 312
Intangible assets, net   1,306
Prepaid expenses and other current assets 6,102 3,697
Total current assets 174,364 198,023
Property and equipment, net 17,064 16,619
Intangible assets, net 11,717  
Goodwill 2,144 2,244
Restricted cash 619 629
Other assets 4,976 1,270
Total assets 210,884 218,785
Current liabilities:    
Accounts payable 5,278 4,539
Accrued research and development 9,714 4,359
Accrued liabilities 16,041 9,695
Other current liabilities 7,000  
Total current liabilities 38,033 18,593
Long term debt, net 100,871  
Other long-term liabilities 8,915 643
Total liabilities 147,819 19,236
Commitments and contingencies (Note 9)
Stockholders’ equity:    
Preferred stock: $0.001 par value; 5,000 shares authorized at December 31, 2018 and December 31, 2017; no shares issued and outstanding at December 31, 2018 and December 31, 2017
Common stock: $0.001 par value; 139,000 shares authorized at December 31, 2018 and 2017; 62,862 and 61,533 shares issued and outstanding at December 31, 2018 and 2017, respectively 63 62
Additional paid-in capital 1,131,241 1,107,693
Accumulated other comprehensive loss (2,015) (881)
Accumulated deficit (1,066,224) (907,325)
Total stockholders’ equity 63,065 199,549
Total liabilities and stockholders’ equity $ 210,884 $ 218,785