Consolidated Balance Sheets (USD $)	Dec. 29, 2012	Dec. 31, 2011
Current Assets
Cash and cash equivalents	$ 18,482,144	$ 11,147,297
Accounts receivable, less allowances of $487,000 in 2012 and $423,000 in 2011	18,368,774	18,633,088
Inventories:
Raw materials and component parts	8,473,007	11,863,199
Work in process	6,160,578	6,425,914
Finished goods	14,751,195	11,504,321
Inventories	29,384,780	29,793,434
Prepaid expenses and other assets	3,365,904	3,313,186
Recoverable income taxes receivable	1,158,632	647,950
Deferred income taxes	1,064,202	1,332,663
Total Current Assets	71,824,436	64,867,618
Property, Plant and Equipment
Land	1,152,970	1,152,804
Buildings	14,490,407	14,181,502
Machinery and equipment	42,486,647	39,528,714
Accumulated depreciation	(32,469,281)	(30,228,924)
Net Property, Plant and Equipment	25,660,743	24,634,096
Other Assets
Goodwill	13,933,599	13,905,209
Trademarks	170,512	152,446
Patents, technology and other intangibles net of accumulated amortization	1,653,957	1,770,008
Deferred income taxes	2,610,903	1,370,597
Total Other Assets	18,368,971	17,198,260
TOTAL ASSETS	115,854,150	106,699,974
Current Liabilities
Accounts payable	7,607,658	8,412,245
Accrued compensation	3,453,709	2,999,478
Other accrued expenses	2,414,135	1,060,143
Current portion of long-term debt	1,428,571	3,714,286
Total Current Liabilities	14,904,073	16,186,152
Other long-term liabilities	607,463	655,001
Long-term debt, less current portion	6,071,428	3,035,714
Accrued postretirement benefits	2,507,726	1,853,157
Accrued pension cost	20,181,361	15,811,622
Commitments and contingencies (See Note 3)
Shareholders' Equity
Voting Preferred Stock, no par value: Authorized and unissued: 1,000,000 shares
Nonvoting Preferred Stock, no par value: Authorized and unissued: 1,000,000 shares
Common Stock, no par value: Authorized: 50,000,000 shares Issued: 8,914,478 shares in 2012 and 8,908,607 shares in 2011	28,585,498	28,499,779
Treasury Stock: 2,694,729 shares in 2012 and 2011	(19,105,723)	(19,105,723)
Retained earnings	78,717,589	73,200,362
Accumulated other comprehensive income (loss):
Foreign currency translation	2,640,478	2,107,187
Unrecognized net pension and postretirement benefit costs, net of taxes	(19,255,743)	(15,543,277)
Accumulated other comprehensive loss	(16,615,265)	(13,436,090)
Total Shareholders' Equity	71,582,099	69,158,328
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 115,854,150	$ 106,699,974