CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Current assets:
Cash	$ 8,100	$ 7,456
Accounts receivable	40	21
Inventory	47	75
Prepaid expenses	156	330
Total current assets	8,343	7,882
Property, plant and equipment, net	1,076	1,074
Total assets	9,419	8,956
Current liabilities:
Accounts payable	596	357
Accrued and other current liabilities	405	297
Warrant liability	942	0
Total current liabilities	1,943	654
Total liabilities	1,943	654
Stockholders’ equity:
Preferred stock	0	0
Common stock, $0.01 par value; 30,000,000 shares authorized and 17,097,420 and 14,101,395 shares issued and outstanding, respectively	171	141
Additional paid-in capital	37,236	32,908
Accumulated deficit	(29,923)	(24,739)
Accumulated other comprehensive loss	(8)	(8)
Total stockholders’ equity	7,476	8,302
Total liabilities and stockholders’ equity	9,419	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).

Name:	us-gaap_AccountsPayableCurrent
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.