Condensed Consolidated Balance Sheets-Unaudited - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Current Assets:
Cash and cash equivalents	$ 5,941	$ 5,192
Accounts receivable, less allowances of $38 and $43, respectively	2,201	3,266
Inventories, net (Note C)	3,747	4,198
Prepaid expenses and other current assets	217	278
Total Current Assets	12,106	12,934
Property, Plant and Equipment
Land	633	633
Buildings and improvements	3,928	3,922
Machinery and equipment	16,590	16,314
Gross property, plant and equipment	21,151	20,869
Less: accumulated depreciation	(17,841)	(17,322)
Net property, plant, and equipment	3,310	3,547
Intangible assets, net (Note D)	488	528
Other assets, net	213	253
Total Assets	16,117	17,262
Current Liabilities:
Accounts payable	1,021	1,719
Accrued compensation and commissions expense	814	681
Accrued warranty expense	146	242
Other accrued expenses	337	383
Total Current Liabilities	2,318	3,025
Stockholders' Equity:
Common stock, $0.01 par value - 10,000,000 shares authorized; 2,732,443 shares issued and 2,652,779 shares outanding at September 30, 2015 and 2,696,201 shares issued and 2,616,485 shares outstanding at December 31, 2014	27	27
Additional paid-in capital	29,042	28,901
Accumulated deficit	(14,737)	(14,163)
Treasury stock: 79,664 and 79,716 shares held in treasury at cost at September 30, 2015 and December 31, 2014, respectively	(572)	(572)
Accumulated other comprehensive income	39	44
Total Stockholders' Equity	13,799	14,237
Total Liabilities and Stockholders' Equity	$ 16,117	$ 17,262