Consolidated Balance Sheets (USD $)	Mar. 31, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 427,885	$ 525,632
Accounts receivable, less allowance for doubtful accounts of approximately $158,000 in 2012 and $149,000 in 2011	1,791,640	1,754,959
Inventories, net	2,657,831	2,845,563
Prepaid expenses	319,406	330,403
Deferred income taxes	273,874	278,437
Total current assets	5,470,636	5,734,994
Property, plant and equipment:
Land	500	500
Buildings and leasehold improvements	802,114	754,922
Machinery and equipment	10,944,866	10,891,820
Total property, plant and equipment	11,747,480	11,647,242
Less allowance for depreciation and amortization	(8,298,592)	(8,087,988)
Net property, plant and equipment	3,448,888	3,559,254
Other noncurrent assets	47,268	47,259
Deferred income taxes	733,093	727,118
Total assets	9,699,885	10,068,625
Current liabilities:
Accounts payable	1,521,525	2,025,656
Commissions, salaries, wages, and taxes thereon	155,819	162,507
Income taxes payable	3,397	69,718
Revolving line of credit	800,000	700,000
Current portion of long-term debt	200,000	200,000
Other accrued expenses	717,471	491,188
Total current liabilities	3,398,212	3,649,069
Long-term liabilities:
Long-term debt, net of current portion	550,000	600,000
Pension and other benefits	2,051,754	2,051,054
Total long-term liabilities	2,601,754	2,651,054
Total liabilities	5,999,966	6,300,123
Commitments and contingencies (Note 11)
Stockholders' equity:
Common stock, $1.00 par value: Authorized shares - 4,000,000 Issued shares - 1,875,985 in 2012 and 1,871,999 in 2011; Outstanding shares - 1,683,985 in 2012 and 1,679,999 in 2011	1,875,985	1,871,999
Other capital	285,994	284,478
Retained earnings	4,915,881	5,001,097
Treasury stock at cost, 192,000 shares	(2,112,000)	(2,112,000)
Accumulated other comprehensive loss	(1,265,941)	(1,277,072)
Total stockholders' equity	3,699,919	3,768,502
Total liabilities and stockholders' equity	$ 9,699,885	$ 10,068,625