Consolidated Balance Sheets (Current Period Unaudited) - USD ($)	Sep. 30, 2018	Dec. 31, 2017
CURRENT ASSETS
Cash and cash equivalents	$ 16,537,259	$ 24,404,368
Accounts receivable	41,491	19,384
Inventory, net		246,374
Vendor deposits	86,250	715,603
Prepaid expenses	470,525	300,169
Security deposit	4,064	4,064
TOTAL CURRENT ASSETS	17,139,589	25,689,962
NON-CURRENT ASSETS
Property and equipment, net	1,449,969	1,029,875
Goodwill	2,061,022	2,061,022
Security deposit	67,714	67,714
TOTAL ASSETS	20,718,294	28,848,573
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable and accrued liabilities	750,502	852,155
Accrued bonus and severance	755,074	849,703
Accrued interest	56,458	54,219
Current portion of term loan, net of discount and fees	1,952,258
Other current liabilities	26,545	59,614
TOTAL CURRENT LIABILITIES	3,540,837	1,815,691
NON-CURRENT LIABILITIES
Accrued interest	253,920	89,717
Term loan, net of discount and fees	5,175,032	6,942,151
Warrant liability	8,224,992	15,242,915
Other liabilities	124,370	141,707
TOTAL LIABILITIES	17,319,151	24,232,181
Commitments and contingencies (Note 7)
STOCKHOLDERS' EQUITY
Preferred stock; $0.001 par value; 10,000,000 shares authorized; none issued and outstanding
Common stock; $0.001 par value; 100,000,000 shares authorized; 8,738,163 and 8,722,823 shares issued and outstanding	8,739	8,723
Additional paid-in capital	72,772,537	71,939,917
Accumulated deficit	(69,382,133)	(67,332,248)
TOTAL STOCKHOLDERS' EQUITY	3,399,143	4,616,392
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 20,718,294	$ 28,848,573