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CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($)
$ in Thousands
Mar. 31, 2017
Dec. 31, 2016
Current assets:    
Cash and cash equivalents $ 3,609 $ 6,627
Investments available for sale 6,129 9,249
Prepaid expenses and other current assets 868 588
Total current assets 10,606 16,464
Prepaid expenses, non-current 2,279 2,374
Property and equipment, net 24 33
Total assets 12,909 18,871
Current liabilities:    
Accounts payable and accrued liabilities 651 1,806
Accrued payroll and related expenses 150 1,522
Income tax liability 401 396
Deferred revenue, current portion 1,500 1,500
Total current liabilities 2,702 5,224
Deferred revenue, non-current portion 2,125 2,500
Total liabilities 4,827 7,724
Commitments and contingencies (Note 4)
Stockholders' equity:    
Preferred stock, par value $0.0001 per share Authorized: 10,000,000 shares at March 31, 2017 and December 31, 2016, Issued and outstanding: 0 shares at March 31, 2017 and December 31, 2016 0 0
Common stock, par value $0.0001 per share Authorized: 100,000,000 shares at March 31, 2017 and December 31, 2016, Issued and outstanding: 58,144,888 shares and 58,144,888 shares, at March 31, 2017 and December 31, 2016, respectively 6 6
Additional paid-in capital 170,224 169,391
Accumulated deficit (162,131) (158,238)
Accumulated other comprehensive loss (17) (12)
Total stockholders' equity 8,082 11,147
Total liabilities and stockholders' equity $ 12,909 $ 18,871