Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Current Assets:
Cash and cash equivalents (Note A)	$ 5,553	$ 5,192
Accounts receivable, less allowances of $34 and $43, respectively (Note A)	2,606	3,266
Inventories, net (Notes A and B)	3,546	4,198
Prepaid expenses and other current assets	247	278
Total Current Assets	11,952	12,934
Property, Plant and Equipment (Note A)
Land	633	633
Buildings and improvements	3,938	3,922
Machinery and equipment	16,633	16,314
Gross property, plant and equipment	21,204	20,869
Less: accumulated depreciation	(18,039)	(17,322)
Net property, plant, and equipment	3,165	3,547
Intangible assets, net (Note A)	475	528
Other assets, net	211	253
Total Assets	15,803	17,262
Current Liabilities:
Accounts payable	987	1,719
Accrued compensation and commissions expense	769	681
Accrued warranty expense	126	242
Other accrued expenses	194	383
Total Current Liabilities	2,076	3,025
Stockholders' Equity:
Common stock, $0.01 par value - 10,000,000 shares authorized; 2,745,098 shares issued and 2,665,434 shares outstanding at December 31, 2015, and 2,696,201 shares issued and 2,616,485 shares outstanding at December 31, 2014	27	27
Additional paid-in capital	29,106	28,901
Accumulated deficit	(14,874)	(14,163)
Treasury stock, 79,664 and 79,716 shares held in treasury at cost at December 31, 2015 and 2014, respectively	(572)	(572)
Accumulated other comprehensive income	40	44
Total Stockholders' Equity	13,727	14,237
Total Liabilities and Stockholders' Equity	$ 15,803	$ 17,262