Condensed Consolidated Balance Sheets (Unaudited) (USD $)	Sep. 30, 2011		Dec. 31, 2010
Current Assets:
Cash and cash equivalents	$ 409,452		$ 725,524
Certificates of deposit	6,320,000		6,380,000
Accounts receivable, net	5,335,805	[1]	4,017,081	[2]
Inventories, net	4,828,937		4,310,154
Deferred tax assets	391,191		394,191
Prepaid income taxes			72,249
Other current assets	378,481		280,768
Total current assets	17,663,866		16,179,967
Property, Plant and Equipment:
Land	923,587		936,312
Land improvements	314,563		314,563
Buildings and improvements	6,052,385		6,354,014
Production equipment and other	28,330,274		28,019,687
Property, Plant and Equipment Gross	35,620,809		35,624,576
Less accumulated depreciation	28,084,871		28,145,698
Net property, plant and equipment	7,535,938		7,478,878
Total assets	25,199,804		23,658,845
Current Liabilities:
Accounts payable	1,105,464		748,781
Accrued wages and salaries	794,651		405,604
Other accrued expenses	477,061		312,123
Unearned revenue and customer deposits	98,613		84,698
Total current liabilities	2,475,789		1,551,206
Deferred income taxes	687,275		745,275
Total liabilities	3,163,064		2,296,481
Commitments and contingencies (Note 3)
Shareholders' Equity:
Preferred stock		[3]		[3]
Common stock	1,138,096	[4]	1,138,096	[4]
Additional paid-in capital	447,134		447,134
Retained earnings	24,373,608		23,699,232
Treasury stock	(3,922,098)	[5]	(3,922,098)	[5]
Total shareholders' equity	22,036,740		21,362,364
Total liabilities and shareholders' equity	$ 25,199,804		$ 23,658,845

[1] Net of allowance of $132,000.

[2] Net of allowance of $135,000.

[3] No par value, 500,000 shares authorized, none outstanding.

[4] $1.00 par value, 4,000,000 shares authorized, 1,138,096 shares issued, 966,132 shares outstanding.

[5] At cost, 171,964 shares.