CONDENSED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Current assets:
Cash	$ 699	$ 11,826
Investment in securities held to maturity	2,949
Accounts receivable	7	10
Prepaid expenses	172	337
Inventory	394	57
Deposits	17	9
Total current assets	4,238	12,239
Property and equipment, net	1,559	631
Total assets	5,797	12,870
Current liabilities:
Short-term debt	174	45
Accounts payable	175	351
Accrued contract cancellation settlement		1,000
Accrued expenses	1,074	371
Notes payable, related parties	18	30
Total current liabilities	1,441	1,797
Notes payable, related parties		6
Long-term debt, net	637	138
Common stock warrant liability	4	69
Deferred rent	45	33
Total liabilities	2,127	2,043
Commitments and contingencies ( See note 15)
Stockholders' equity:
Common stock, $0.001 par value, 100,000,000 shares authorized, 10,363,189 and 10,157,292 shares issued and outstanding at September 30, 2017 and December 31, 2016, respectively	10	10
Additional paid-in capital	74,946	72,069
Stock subscribed, but not issued, consisting of -0- and 4,750 shares at September 30, 2017 and December 31, 2016, respectively		59
Accumulated deficit	(71,286)	(61,311)
Total stockholders' equity	3,670	10,827
Total liabilities and stockholders' equity	$ 5,797	$ 12,870