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Condensed Consolidated Balance Sheets - USD ($)
$ in Thousands
Jun. 30, 2017
Dec. 31, 2016
Current assets:    
Cash and cash equivalents $ 37,675 $ 24,289
Marketable securities available-for-sale 89,286 57,126
Accounts and other receivables 810 1,342
Prepaid expenses and other current assets 4,434 6,842
Total current assets 132,205 89,599
Property and equipment, net 16,751 17,174
Goodwill 2,140 1,971
Restricted cash 619 602
Other assets 253 334
Total assets 151,968 109,680
Current liabilities:    
Accounts payable 681 3,796
Accrued research and development 3,223 5,048
Accrued liabilities 7,184 11,192
Total current liabilities 11,088 20,036
Other long-term liabilities 353 443
Total liabilities 11,441 20,479
Commitments and contingencies (Note 4)
Stockholders’ equity:    
Preferred stock: $0.001 par value; 5,000 shares authorized at June 30, 2017 and December 31, 2016; no shares issued and outstanding at June 30, 2017 and December 31, 2016
Common stock: $0.001 par value; 139,000 and 69,500 shares authorized at June 30, 2017 and December 31, 2016, respectively; 54,748 and 38,599 shares issued and outstanding at June 30, 2017 and December 31, 2016, respectively 55 39
Additional paid-in capital 1,000,177 904,957
Accumulated other comprehensive loss (1,929) (3,624)
Accumulated deficit (857,776) (812,171)
Total stockholders’ equity 140,527 89,201
Total liabilities and stockholders’ equity $ 151,968 $ 109,680