Condensed Consolidated Balance Sheets-Unaudited - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Current Assets:
Cash and cash equivalents	$ 5,576	$ 5,553
Accounts receivable, less allowance of $34 at March 31, 2016 and December 31, 2015	2,544	2,606
Inventories, net (Note C)	3,550	3,546
Prepaid expenses and other current assets	359	247
Total Current Assets	12,029	11,952
Property, Plant and Equipment
Land	633	633
Buildings and improvements	3,938	3,938
Machinery and equipment	16,681	16,633
Gross property, plant and equipment	21,252	21,204
Less: accumulated depreciation	(18,229)	(18,039)
Net property, plant, and equipment	3,023	3,165
Intangible assets, net (Note D)	461	475
Other assets, net	208	211
Total Assets	15,721	15,803
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable	1,104	987
Accrued compensation and commissions expense	721	769
Accrued warranty expense	105	126
Other accrued expenses	209	194
Total Current Liabilities	2,139	2,076
Stockholders' Equity:
Common stock, $0.01 par value - 10,000,000 shares authorized; 2,745,098 shares issued and 2,665,434 shares outanding at March 31, 2016 and December 31, 2015	27	27
Additional paid-in capital	29,090	29,106
Accumulated deficit	(15,000)	(14,874)
Treasury stock: 79,664 shares held in treasury at cost at March 31, 2016 and December 31, 2015	(572)	(572)
Accumulated other comprehensive income	37	40
Total Stockholders' Equity	13,582	13,727
Total Liabilities and Stockholders' Equity	$ 15,721	$ 15,803