CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) (USD $)	3 Months Ended
	Mar. 30, 2013	Mar. 31, 2012
Operating Activities
Net income	$ 1,005,248	$ 2,045,608
Adjustments to reconcile net income to net cash provided (used) by operating activities:
Depreciation and amortization	949,554	817,557
Loss on sale of equipment and other assets	3,815	14,055
Provision for doubtful accounts	24,158	37,862
Issuance of Common Stock for directors' fees	4,614	6,154
Changes in operating assets and liabilities:
Accounts receivable	(77,541)	(1,982,498)
Inventories	(370,921)	(161,271)
Prepaid expenses and other	(307,029)	(374,207)
Prepaid pension cost	664,775	186,606
Recoverable taxes receivable	750,000	647,949
Other assets	(47,063)	(21,003)
Accounts payable	7,411	300,851
Accrued compensation	(2,037,828)	(1,102,499)
Other accrued expenses	136,841	1,638,442
Net cash provided by operating activities	706,034	2,053,606
Investing Activities
Purchases of property, plant and equipment	(1,256,623)	(1,537,971)
Net cash used in investing activities	(1,256,623)	(1,537,971)
Financing Activities
Principal payments on long-term debt	(357,143)	(178,571)
Principal payments on revolving credit loan	0	(3,000,000)
Proceeds from issuance of long-term debt	0	5,000,000
Dividends paid	(621,975)	(621,387)
Net cash (used in) provided by financing activities	(979,118)	1,200,042
Effect of exchange rate changes on cash	(60,494)	95,927
Net change in cash and cash equivalents	(1,590,201)	1,811,604
Cash and cash equivalents at beginning of period	18,482,144	11,147,297
Cash and cash equivalents at end of period	$ 16,891,943	$ 12,958,901