Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Current assets
Cash	$ 7,333	$ 21,749
Accounts receivable	3	116
Inventory	302	430
Prepaid expenses and other current assets	392	242
Total current assets	8,030	22,537
Property and equipment, net	727	775
Intangible assets	1,494	32
Other assets	126	63
Total assets	10,377	23,407
Current liabilities
Accounts payable	399	736
Due to related parties	18	55
Note payable, current portion	490
Other current liabilities	582	569
Total current liabilities	1,489	1,360
Note payable, net of current portion	369
Deferred rent	80	22
Total liabilities	1,938	1,382
Commitments and contingencies (note 13)
Shareholders' equity
Ordinary Shares $0.001 par value, 350,000,000 shares authorized; 13,420,927 and 13,335,477 shares issued and outstanding at December 31, 2016 and 2015, respectively	13	13
Deferred Ordinary Shares € 1.00 (US$1.35) par value, 39,994 shares authorized, issued and outstanding at December 31, 2016 and 2015	54	54
Preferred Shares $0.001 par value, 50,000,000 shares authorized; -0- shares issued and outstanding at December 31, 2016 and 2015
Additional paid-in capital	79,676	77,505
Accumulated deficit	(71,304)	(55,547)
Total shareholders' equity	8,439	22,025
Total liabilities and shareholders’ equity	$ 10,377	$ 23,407