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Condensed Consolidated Balance Sheets - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Current assets:    
Cash and cash equivalents $ 37,899 $ 39,884
Marketable securities available-for-sale 91,634 111,171
Accounts and other receivables, net 8,135 8,886
Inventories, net 48,099 41,332
Prepaid expenses and other current assets 8,380 7,380
Total current assets 194,147 208,653
Property and equipment, net 30,897 32,022
Intangible assets, net 202 2,500
Operating lease right-of-use assets 28,436 30,252
Goodwill 2,061 2,081
Restricted cash 212 216
Other assets 3,301 3,344
Total assets 259,256 279,068
Current liabilities:    
Accounts payable 4,557 9,278
Accrued research and development 3,253 4,120
Accrued liabilities 12,268 14,802
Warrant liability 6,250 14,860
Other current liabilities 2,951 9,987
Total current liabilities 29,279 53,047
Long-term debt, net 179,583 178,601
Long-term portion of lease liabilities 36,972 37,845
Other long-term liabilities 1,598 1,285
Total liabilities 247,432 270,778
Commitments and contingencies (Note 6)
Stockholders’ equity:    
Preferred stock value
Common stock: $0.001 par value; 139,000 shares authorized at March 31, 2020 and December 31, 2019; 87,599 and 83,871 shares issued and outstanding at March 31, 2020 and December 31, 2019, respectively 88 84
Additional paid-in capital 1,245,730 1,229,417
Accumulated other comprehensive loss (2,575) (2,387)
Accumulated deficit (1,231,419) (1,218,824)
Total stockholders’ equity 11,824 8,290
Total liabilities and stockholders’ equity 259,256 279,068
Series B Convertible Preferred Stock    
Stockholders’ equity:    
Preferred stock value