Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Current assets
Cash and cash equivalents	$ 7,798	$ 6,009
Restricted cash	5	5
Accounts receivable, net	1,386	1,726
Inventories	1,256	1,268
Prepaid expenses and other current assets	183	377
Total current assets	10,628	9,385
Property, plant and equipment, net	320	310
Intangibles, net	68	44
Deferred income taxes	527	675
Other assets	59	57
Total assets	11,602	10,471
Current liabilities
Accounts payable	143	324
Accrued liabilities	320	334
Accrued income taxes	74	104
Deferred revenue, current		111
Total current liabilities	537	873
Total liabilities	537	873
Commitments and contingencies (see note 9)
Stockholders' equity:
Common stock, $0.001 par value: 30,000 shares authorized, 7,336 and 7,326 shares issued and outstanding at September 30, 2017 and December 31, 2016, respectively	7	7
Additional paid-in-capital	60,497	60,370
Accumulated other comprehensive (loss) income	4	(71)
Accumulated deficit	(49,443)	(50,708)
Total stockholders' equity	11,065	9,598
Total liabilities and stockholders' equity	$ 11,602	$ 10,471

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.