Condensed Consolidated Balance Sheets (Current Period Unaudited) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Current assets:
Cash	$ 13,268	$ 5,119
Accounts receivable, net	598	1,088
Inventory	330	179
Prepaid expenses and other current assets	295	399
Total current assets	14,491	6,785
Property and equipment, net	1,213	1,214
Deferred offering costs		47
Security deposits	43	43
Total assets	15,747	8,089
Current liabilities:
Accounts payable	384	255
Accrued liabilities	803	361
Note payable – related party	1,058
Amounts due to related party		1,045
Lease termination/abandonment payable - current portion	156	248
Other current liabilities	94	80
Total current liabilities	2,495	1,989
Other noncurrent liabilities	103	109
Commitments and contingencies
Stockholders’ equity:
Preferred stock, $0.01 par value, 5,000,000 shares authorized, no shares issued or outstanding at March 31, 2015 or December 31, 2014	0	0
Common stock, $0.01 par value, 50,000,000 shares authorized, 7,504,990 and 3,782,629 shares issued and outstanding at March 31, 2015 and December 31, 2014, respectively	75	38
Additional paid in capital	22,348	12,593
Accumulated deficit	(9,274)	(6,640)
Total stockholders’ equity	13,149	5,991
Total liabilities and stockholders’ equity	$ 15,747	$ 8,089