Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 1,286	$ 3,806
Restricted cash	30	30
Prepaid expenses and other current assets	556	530
Total current assets	1,872	4,366
Property and equipment, net	60	63
Total assets	1,932	4,429
Current liabilities:
Accounts payable	467	1,050
Accrued expenses	987	1,645
Short term debt to related party, net of debt discount	4,986	4,960
Derivative liabilities	883	51
Total current liabilities	7,323	7,706
Long term debt to related party, net of discount	326	168
Total liabilities	7,649	7,874
Commitments (Note 11)
Stockholders’ deficit:
Preferred stock, $0.01 par value – 500,000 shares authorized; no shares issued and outstanding at March 31, 2019 and December 31, 2018
Common stock, $0.01 par value – 50,000,000 shares authorized at March 31, 2019 and December 31, 2018; and 19,277,545 shares issued and outstanding at March 31, 2019 and December 31, 2018	193	193
Additional paid-in capital	263,580	263,521
Accumulated deficit	(269,490)	(267,159)
Total stockholders’ deficit	(5,717)	(3,445)
Total liabilities and stockholders’ deficit	$ 1,932	$ 4,429