Balance Sheets - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Current Assets:    
Cash and cash equivalents $ 14,871 $ 18,933
Accounts receivable 0 185
Prepaid expenses and other current assets 132 170
Total current assets 15,003 19,288
Property and equipment, net 63 56
Operating lease right-of-use asset 161 0
Security deposit 13 13
Total assets 15,240 19,357
Current liabilities:    
Accounts payable 315 348
Accrued expenses 145 224
Accrued payroll related expenses 819 984
Current operating lease liability 152 0
Deferred revenue 37 55
Total liabilities 1,468 1,611
Stockholders' equity:    
Preferred stock, $0.001 par value, authorized 2,500 shares: none issued and outstanding at December 31, 2019 and 2018 0 0
Common stock, $0.001 par value, authorized 47,500 shares; 17,117 shares issued and outstanding at December 31, 2019 and 15,034 issued and outstanding as of December 31, 2018 17 15
Additional paid-in capital 149,017 139,693
Accumulated deficit (135,262) (121,962)
Total stockholders' equity 13,772 17,746
Total liabilities and stockholders' equity $ 15,240 $ 19,357