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Consolidated Balance Sheets - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Current assets:    
Cash and cash equivalents $ 13,414 $ 75,180
Short-term investments 37,724 55,986
Accounts receivable, net 1,960
Inventory 5,340
Prepaid expenses and other current assets 3,705 3,585
Total current assets 62,143 134,751
Property and equipment, net 5,076 3,049
Other assets 263 45
Total assets 67,482 137,845
Current liabilities:    
Accounts payable 6,814 3,300
Accrued clinical liabilities 13,207 5,231
Accrued payroll and employee liabilities 8,414 4,828
Other accrued liabilities 6,288 4,154
Deferred revenue 1,099
Convertible notes payable to related parties, net of discount 2,911 2,222
Total current liabilities 38,733 19,735
Notes Payable, Related Parties, Noncurrent 50,000
Total liabilities 88,733 19,735
Commitments and contingencies (see Note 5)
Stockholders' equity (deficit):    
Preferred stock, $0.01 par value: 2,500 shares authorized; no shares issued or outstanding at December 31, 2016 and 2015 0 0
Common stock, $0.01 par value: 75,000 shares authorized; 39,355 and 36,106 shares issued and outstanding at December 31, 2016 and 2015, respectively 394 361
Additional paid-in capital 564,343 530,617
Accumulated other comprehensive loss (17) (40)
Accumulated deficit (585,971) (412,828)
Total stockholders' equity (deficit) (21,251) 118,110
Total liabilities and stockholders' equity (deficit) $ 67,482 $ 137,845