Consolidated Balance Sheets (USD $)	Dec. 31, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 279,288	$ 413,353
Accounts receivable, less allowance for doubtful accounts of approximately $199,000 in 2013 and $162,000 in 2012	2,097,644	2,385,644
Inventories, net	2,738,813	2,671,616
Prepaid expenses	299,730	298,185
Deferred income taxes		287,417
Total current assets	5,415,475	6,056,215
Property, plant and equipment:
Land	0	500
Buildings and leasehold improvements	552,561	803,021
Machinery and equipment	12,089,799	11,292,235
	12,642,360	12,095,756
Less allowance for depreciation and amortization	(9,226,076)	(8,861,997)
	3,416,284	3,233,759
Other noncurrent assets	123,856	45,173
Deferred income taxes		628,351
Total assets	8,955,615	9,963,498
Current liabilities:
Accounts payable	2,496,331	1,856,023
Customer deposits	216,107	255,753
Commissions, salaries, wages, and taxes thereon	77,101	157,087
Income taxes payable	5,326	3,888
Revolving line of credit	1,580,611	1,300,000
Current portion of long-term debt	240,000	200,000
Note payable to a related party	200,000
Current portion of capital lease obligation	13,883
Accrued settlement, current portion	156,000
Other accrued expenses	660,771	690,584
Total current liabilities	5,646,130	4,463,335
Long-term liabilities:
Long-term debt, net of current portion	920,000	400,000
Capital lease obligation, net of current portion	59,768
Accrued settlement, net of current portion	130,000
Pension and other benefits	1,274,173	2,128,210
	2,383,941	2,528,210
Total liabilities	8,030,071	6,991,545
Stockholders’ equity:
Common stock, $1.00 par value: Authorized shares – 4,000,000; Issued shares – 1,879,319 in 2013 and 1,879,319 in 2012; Outstanding shares – 1,687,319 in 2013 and 1,687,319 in 2012	1,879,319	1,879,319
Other capital	271,381	288,395
Retained earnings	1,565,134	4,386,520
Treasury stock at cost, 192,000 shares	(2,112,000)	(2,112,000)
Accumulated other comprehensive loss	(978,290)	(1,470,281)
Total stockholders’ equity	925,544	2,971,953
Total liabilities and stockholders’ equity	8,955,615	9,963,498
Series C Preferred Stock [Member]
Stockholders’ equity:
Series C redeemable, convertible preferred stock, $1.00 par value: Liquidation preference of $5 per share; Authorized shares - 100,000; Issued and outstanding shares - 60,000 in 2013 and 0 in 2012	$ 300,000