Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 2,656	$ 1,547
Accounts receivable, net of allowance for doubtful accounts of $139 and $90, respectively	2,302	3,011
Inventories	273	141
Prepaid expenses and other current assets	347	281
Total current assets	5,578	4,980
Property and equipment:
Furniture and fixtures	491	486
Leasehold improvements	426	426
Equipment	3,702	3,561
Property and equipment, Gross	4,619	4,473
Accumulated depreciation	4,253	4,102
Property and equipment, Net	366	371
Intangible assets, net	3,181	2,795
Deferred income taxes	60	58
TOTAL ASSETS	9,185	8,204
Current liabilities:
Accounts payable	634	256
Warranty	1,072	1,223
Accrued compensation	183	193
Other current liabilities	382	323
Total current liabilities	2,271	1,995
TOTAL LIABILITIES	2,271	1,995
Shareholders' equity
Preferred stock, $.01 par value; 5,000,000 shares authorized, none issued or outstanding	0	0
Common stock, $0.01 par value; 20,000,000 shares authorized, 5,168,381 and 5,094,473 issued and outstanding at June 30, 2017 and December 31, 2016, respectively.	51	50
Additional paid-in capital	24,207	24,055
Accumulated other comprehensive loss	(332)	(363)
Accumulated deficit	(17,012)	(17,533)
Total shareholders' equity	6,914	6,209
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 9,185	$ 8,204

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.