Condensed Consolidated Statements of Earnings (unaudited) - Scenario, Unspecified [Domain] - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Net sales	$ 5,443,000	$ 6,178,000	$ 10,048,000	$ 13,252,000
Cost of sales	4,138,000	5,028,000	7,722,000	10,761,000
Gross margin	1,305,000	1,150,000	2,326,000	2,491,000
Selling & administrative expenses	1,130,000	1,195,000	2,141,000	2,499,000
Operating earnings (loss)	175,000	(45,000)	185,000	(8,000)
Interest expense	0	15,000	0	31,000
Other income, net	(2,000)	(7,000)	(1,000)	(13,000)
Income tax expense	0	0	4,000	38,000
Earnings (loss) from continuing operations	177,000	(53,000)	182,000	(64,000)
Discontinued Operations:
Earnings from discontinued operations	14,000	279,000	88,000	361,000
Discontinued operations, net of income taxes	14,000	279,000	88,000	361,000
Net income	$ 191,000	$ 226,000	$ 270,000	$ 297,000
Basic and Diluted earnings per share:
Continuing operations (in dollars per share)	$ 0.02	$ 0	$ 0.02	$ 0
Discontinued operations (in dollars per share)	0	0.02	0	0.03
Net income per share (in dollars per share)	$ 0.02	$ 0.02	$ 0.02	$ 0.03
Basic and diluted average common shares outstanding (in shares)	11,680,395	11,771,286	11,680,395	11,751,673