Condensed Consolidated Balance Sheets-Unaudited (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Current Assets:
Cash and cash equivalents	$ 6,097	$ 7,183
Restricted cash (Note E)	1,500	1,500
Accounts receivable, less allowances of $62 and $42, respectively	3,771	3,237
Inventories, net (Note C)	4,379	4,629
Deferred income taxes (Note K)	0	0
Prepaid expenses and other current assets	309	405
Total Current Assets	16,056	16,954
Property, Plant and Equipment
Land	633	633
Buildings and improvements	3,908	3,908
Machinery and equipment	16,111	15,980
Gross property, plant and equipment	20,652	20,521
Less: accumulated depreciation	(16,746)	(16,535)
Net property, plant, and equipment	3,906	3,986
Deferred income taxes, net (Note J)	0	0
Other assets, net	838	323
Total Assets	20,800	21,263
LIABILITIES AND STOCKHOLDERS' EQUITY
Note payable to bank (Note E)	1,395	1,181
Accounts payable	2,254	1,978
Accrued compensation and commissions expense	795	992
Other accrued expenses	324	357
Total Current Liabilities	4,768	4,508
Total Liabilities	4,768	4,508
Stockholders' Equity:
Common stock, $0.01 par value - 10,000,000 shares authorized; 2,674,448 shares issued and 2,594,784 shares outstanding at March 31, 2014 and December 31, 2013	27	27
Additional paid-in capital	28,683	28,593
Accumulated deficit	(12,147)	(11,338)
Treasury stock: 79,664 shares held in treasury at cost at March 31, 2014 and December 31, 2013, respectively	(572)	(572)
Accumulated other comprehensive income	41	45
Total Stockholders' Equity	16,032	16,755
Total Liabilities and Stockholders' Equity	$ 20,800	$ 21,263