Condensed Consolidated Balance Sheets (Unaudited) (USD $)	Jun. 30, 2011		Dec. 31, 2010
Current Assets:
Cash and cash equivalents	$ 1,265,387		$ 725,524
Certificates of deposit	5,220,000		6,380,000
Accounts receivable, net	5,046,474	[1]	4,017,081	[1]
Inventories, net	4,895,737		4,310,154
Deferred tax assets	388,191		394,191
Prepaid income taxes			72,249
Other current assets	291,186		280,768
Total current assets	17,106,975		16,179,967
Property, Plant and Equipment:
Land	923,587		936,312
Land improvements	314,563		314,563
Buildings and improvements	6,021,895		6,354,014
Production equipment and other	28,110,112		28,019,687
Property, Plant and Equipment Gross	35,370,157		35,624,576
Less accumulated depreciation	27,865,877		28,145,698
Net property, plant and equipment	7,504,280		7,478,878
Total assets	24,611,255		23,658,845
Current Liabilities:
Accounts payable	1,008,502		748,781
Accrued wages and salaries	619,181		405,604
Other accrued expenses	368,520		312,123
Unearned revenue and customer deposits	94,742		84,698
Total current liabilities	2,090,945		1,551,206
Deferred income taxes	685,275		745,275
Total liabilities	2,776,220		2,296,481
Commitments and contingencies (Note 3)
Shareholders' Equity:
Preferred stock		[2]		[2]
Common stock	1,138,096	[3]	1,138,096	[3]
Additional paid-in capital	447,134		447,134
Retained earnings	24,171,903		23,699,232
Treasury stock	(3,922,098)	[4]	(3,922,098)	[4]
Total shareholders' equity	21,835,035		21,362,364
Total liabilities and shareholders' equity	$ 24,611,255		$ 23,658,845

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

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

[3] $1.00 par value, 4,000,000 shares authorized, 1,138,096 shares issued, 966,132 shares outstanding.

[4] At cost, 171,964 shares.