Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 6,373	$ 6,009
Restricted cash	5	5
Accounts receivable, net	1,636	1,726
Inventories	1,351	1,268
Prepaid expenses and other current assets	321	377
Total current assets	9,686	9,385
Property, plant and equipment, net	289	310
Deferred income taxes	630	675
Intangibles, net	60	44
Other assets	59	57
Total assets	10,724	10,471
Current liabilities:
Accounts payable	239	324
Accrued liabilities	313	334
Accrued income taxes	141	104
Deferred revenue, current	29	111
Total current liabilities	722	873
Total liabilities	722	873
Commitments and contingencies (see note 9)
Stockholders' equity:
Common stock, $0.001 par value: 30,000 shares authorized, 7,328 and 7,326 shares issued and outstanding at March 31, 2017 and December 31, 2016, respectively	7	7
Additional paid-in-capital	60,399	60,370
Accumulated other comprehensive (loss) income	(60)	(71)
Accumulated deficit	(50,344)	(50,708)
Total stockholders' equity	10,002	9,598
Total liabilities and stockholders' equity	$ 10,724	$ 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.