Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 814	$ 737
Prepaid expenses and other current assets	485	813
Total current assets	1,299	1,550
Property and equipment, net		19
Restricted cash	71	101
Total assets	1,370	1,670
Current liabilities:
Accounts payable	2,856	3,330
Accrued expenses	3,129	3,307
Advance notes	807
Term loans payable		18,018
Notes payable to vendors	1,471
Total current liabilities	8,263	24,655
Convertible notes	1,217
Notes payable to vendors		1,351
Total liabilities	9,480	26,006
Stockholders' deficit:
Common stock, $0.001 par value: 225,000,000 and 85,000,000 shares authorized at December 31, 2018 and December 31, 2017, respectively; 109,872,526 and 14,946,712 shares issued and outstanding at December 31, 2018 and December 31, 2017, respectively	110	15
Additional paid-in capital	266,381	238,246
Accumulated deficit	(274,601)	(262,597)
Total stockholders' deficit	(8,110)	(24,336)
Total liabilities and stockholders' deficit	$ 1,370	$ 1,670