Balance Sheets - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Current assets:    
Cash and cash equivalents $ 12,092 $ 15,101
Marketable securities 46,184 91,640
Income tax receivable 852 384
Other receivables 87 80
Prepaid expenses 1,530 1,729
Restricted cash, current 700  
Total current assets 61,445 108,934
Property and equipment, net 1,614 1,263
Restricted cash 769 700
Total assets 63,828 110,897
Current liabilities:    
Accounts payable and accrued expenses 11,533 5,268
Total current liabilities 11,533 5,268
Deferred lease obligation 1,570 585
Commitments and contingencies (Note 19)
Stockholders' equity:    
Preferred stock; $0.001 par value; 5,000,000 shares authorized at December 31, 2016 and December 31, 2015; zero shares issued and outstanding at December 31, 2016 and December 31, 2015
Common stock; $0.001 par value; 100,000,000 shares authorized at December 31, 2016 and December 31, 2015; 27,296,863 shares and 27,254,863 shares issued and outstanding at December 31, 2016 and December 31, 2015, respectively 27 27
Additional paid-in capital 212,866 209,943
Accumulated deficit (162,171) (104,891)
Accumulated other comprehensive income (loss) 3 (35)
Total stockholders' equity 50,725 105,044
Total liabilities and stockholders' equity $ 63,828 $ 110,897