Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Current assets
Cash and cash equivalents	$ 6,461	$ 7,618
Restricted cash		4,098
Account receivable, net	767	334
Inventory	677	769
Debt issuance costs		526
Prepaid licenses	4,900	4,900
Prepaid expenses	452	819
Total current assets	13,257	19,064
Property and equipment, net	1,347	1,842
Other long-term assets	13	13
Prepaid licenses, net of current portion	1,954	5,629
Total assets	16,571	26,548
Current liabilities
Accounts payable	2,521	1,150
Accrued liabilities	855	780
Convertible notes payable		2,773
Derivative liability	1,369	491
Total current liabilities	4,745	5,194
Royalty liability, net	700	1,175
Long term liabilities	432	645
Long term debt		450
Total liabilities	5,877	7,464
Commitments and contingencies (Note 3)
Shareholders' equity
Common stock, $0.001 par value; 100,000,000 shares authorized, 45,043,730 shares issued and outstanding at September 30, 2016 and 32,170,778 shares issued and outstanding at December 31,2015	45	32
Additional paid-in capital	181,954	168,243
Accumulated deficit	(171,305)	(149,191)
Total shareholders' equity	10,694	19,084
Total liabilities and shareholders' equity	$ 16,571	$ 26,548

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.