Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 2,756	$ 1,547
Accounts receivable, net of allowance for doubtful accounts of $83 and $90, respectively	3,091	3,011
Inventories	426	141
Prepaid expenses and other current assets	396	281
Total current assets	6,669	4,980
Property and equipment:
Furniture and fixtures	493	486
Leasehold improvements	430	426
Equipment	3,849	3,561
Property and equipment, Gross	4,772	4,473
Accumulated depreciation	4,349	4,102
Property and equipment, Net	423	371
Intangible assets, net	3,396	2,795
Deferred income taxes	63	58
TOTAL ASSETS	10,551	8,204
Current liabilities:
Accounts payable	827	256
Warranty	987	1,223
Accrued compensation	214	193
Other current liabilities	648	323
Total current liabilities	2,676	1,995
TOTAL LIABILITIES	2,676	1,995
Shareholders' equity:
Preferred stock, $0.01 par value; 5,000,000 shares authorized, none issued or outstanding	0	0
Common stock, $0.01 par value; 20,000,000 shares authorized, 5,189,518 and 5,094,473 issued and outstanding at September 30, 2017 and December 31, 2016, respectively	51	50
Additional paid-in capital	24,283	24,055
Accumulated other comprehensive loss	(316)	(363)
Accumulated deficit	(16,143)	(17,533)
Total shareholders' equity	7,875	6,209
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 10,551	$ 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.