CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 8,701	$ 9,949
Restricted cash	660	719
Trade accounts receivable, net of allowance of $147 and $204	5,143	4,857
Inventories, net	6,709	6,526
Prepaid expenses and other current assets	522	496
Total current assets	21,735	22,547
Property and equipment, net	6,338	6,408
Brand name and trademark	1,510	1,510
Purchased technology and license rights, net	189	179
Goodwill	185	185
Deposits	91	92
Other assets	64	67
Total assets	30,112	30,988
Current liabilities:
Accounts payable	2,097	1,583
Accrued severance and related	948	1,242
Accrued payroll	198	447
Current portion of mortgage note payable	239	239
Accrued and other liabilities	2,212	2,462
Total current liabilities	5,694	5,973
Mortgage note payable, net of current portion	2,395	2,455
Note payable	140	140
Deferred tax liability	368	368
Derivative liabilities	46	20
Total liabilities	8,643	8,956
STOCKHOLDERS' EQUITY
Common stock, $0.001 par value; 75,000,000 shares authorized; 33,021,170 issued and 32,878,091 outstanding as of March 31, 2018 and December 31, 2017	33	33
Additional paid-in capital	50,867	50,495
Accumulated deficit	(29,431)	(28,496)
Total stockholders' equity	21,469	22,032
Total liabilities and stockholders' equity	$ 30,112	$ 30,988

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.