Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Current Assets:
Cash and cash equivalents	$ 2,778	$ 5,553
Marketable securities	2,770	56
Accounts receivable, net of allowances of $31 and $34, respectively	3,504	2,606
Inventories, net	3,638	3,546
Prepaid expenses and other current assets	200	191
Total Current Assets	12,890	11,952
Property, Plant and Equipment
Land	633	633
Buildings and improvements	3,966	3,938
Machinery and equipment	16,849	16,633
Gross property, plant and equipment	21,448	21,204
Less: accumulated depreciation	(18,737)	(18,039)
Net property, plant, and equipment	2,711	3,165
Deferred income taxes, net	214	0
Intangible assets, net	628	475
Other assets	203	211
Total Assets	16,646	15,803
Current Liabilities:
Accounts payable	1,525	987
Accrued compensation and commissions expense	942	769
Other accrued expenses	288	320
Total Current Liabilities	2,755	2,076
Stockholders' Equity
Common stock, $0.01 par value - 10,000,000 shares authorized; 2,757,050 shares issued and 2,675,466 shares outstanding at December 31, 2016, and 2,745,098 shares issued and 2,665,434 shares outstanding at December 31, 2015	27	27
Additional paid-in capital	29,173	29,106
Accumulated deficit	(14,726)	(14,874)
Treasury stock, 81,584 and 79,664 shares held in treasury at cost at December 31, 2016 and 2015, respectively	(580)	(572)
Accumulated other comprehensive (loss) income	(3)	40
Total Stockholders' Equity	13,891	13,727
Total Liabilities and Stockholders' Equity	$ 16,646	$ 15,803