CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 7,875	$ 9,949
Restricted cash	660	719
Trade accounts receivable, net of allowance of $180 and $204	5,592	4,857
Inventories, net	7,533	6,526
Prepaid expenses and other current assets	568	496
Total current assets	22,228	22,547
Property and equipment, net	6,314	6,408
Brand name and trademark	1,510	1,510
Purchased technology and license rights, net	235	179
Goodwill	185	185
Deposits	115	92
Other assets	67	67
Total assets	30,654	30,988
Current liabilities:
Accounts payable	2,745	1,583
Accrued severance and related	439	1,242
Accrued payroll	394	447
Current portion of mortgage note payable	239	239
Accrued and other liabilities	2,420	2,462
Total current liabilities	6,237	5,973
Mortgage note payable, net of current portion	2,335	2,455
Note payable	140	140
Deferred tax liability	368	368
Derivative liabilities	0	20
Total liabilities	9,080	8,956
STOCKHOLDERS’ EQUITY
Common stock, $0.001 par value; 75,000,000 shares authorized; 33,055,131 issued and 32,912,556 outstanding as of June 30, 2018 and 75,000,000 shares authorized; 33,021,170 issued and 32,878,091 outstanding as of December 31, 2017, respectively	33	33
Additional paid-in capital	51,244	50,495
Accumulated deficit	(29,703)	(28,496)
Total stockholders’ equity	21,574	22,032
Total liabilities and stockholders’ equity	$ 30,654	$ 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).

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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.