CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Current assets:
Cash	$ 2,941	$ 7,456
Accounts receivable	42	21
Inventory	0	75
Prepaid expenses	291	330
Other current assets	212	0
Total current assets	3,486	7,882
Property, plant and equipment, net	1,065	1,074
Total non-current assets	1,065	1,074
Total assets	4,551	8,956
Current liabilities:
Accounts payable	962	357
Accrued and other current liabilities	1,210	297
Warrant liability	605	0
Total current liabilities	2,777	654
Total liabilities	2,777	654
Commitments and contingencies (note 8)
Stockholders' equity:
Preferred stock	0	0
Common stock, par value $0.01 per share, 60,000,000 and 30,000,000 shares authorized, respectively; 17,108,968 and 14,101,395 issued and outstanding, respectively	171	141
Additional paid-in capital	37,921	32,908
Accumulated deficit	(36,318)	(24,739)
Accumulated other comprehensive loss	0	(8)
Total stockholders' equity	1,774	8,302
Total liabilities and stockholders' equity	4,551	8,956
Series B Preferred Stock [Member]
Stockholders' equity:
Preferred stock	$ 0	$ 0

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.