CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) (USD $)	6 Months Ended
	Jun. 28, 2014	Jun. 29, 2013
Operating Activities
Net income	$ 3,196,388	$ 3,179,542
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	1,666,843	1,948,878
Loss on sale of equipment and other assets	84,785	11,394
Provision for doubtful accounts	51,330	40,410
Issuance of Common Stock for directors' fees	14,994	11,253
Changes in operating assets and liabilities:
Accounts receivable	(2,096,292)	(1,301,746)
Inventories	(120,992)	(387,175)
Prepaid expenses and other	378,211	(224,680)
Prepaid pension cost	579,764	1,327,949
Recoverable taxes receivable	0	750,000
Other assets	(96,529)	(51,997)
Accounts payable	1,137,942	454,402
Accrued compensation	(1,356,886)	(1,397,640)
Other accrued expenses	(297,302)	165,827
Net cash provided by operating activities	3,142,256	4,526,417
Investing Activities
Purchases of property, plant and equipment	(1,608,421)	(2,714,190)
Net cash used in investing activities	(1,608,421)	(2,714,190)
Financing Activities
Principal payments on long-term debt	(714,285)	(714,286)
Proceeds from sales of Common Stock	0	13,580
Dividends paid	(1,368,927)	(1,244,076)
Net cash used in financing activities	(2,083,212)	(1,944,782)
Effect of exchange rate changes on cash	(61,671)	(182,601)
Net change in cash and cash equivalents	(611,048)	(315,156)
Cash and cash equivalents at beginning of period	19,988,361	18,482,144
Cash and cash equivalents at end of period	$ 19,377,313	$ 18,166,988