Consolidated Statements of Cash Flows (USD $)	12 Months Ended
	Jan. 03, 2015	Dec. 28, 2013	Dec. 29, 2012
Operating Activities
Net income	$ 7,661,476	$ 6,901,921	$ 8,625,800
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	3,486,302	3,825,286	3,439,800
(Gain)/loss on sale of equipment and other assets	69,258	116,327	(1,500)
Provision for doubtful accounts	37,601	106,485	147,313
Deferred income taxes	229,226	531,023	1,101,701
Issuance of Common Stock for directors' fees	29,994	22,504	24,609
Changes in operating assets and liabilities:
Accounts receivable	(207,631)	1,776,744	307,524
Inventories	(2,825,155)	(1,400,893)	586,576
Prepaid expenses and other	593,075	308,653	(24,741)
Prepaid pension cost	(309,034)	(111,945)	(865,831)
Recoverable taxes receivable	(380,000)	1,158,632	(510,683)
Other assets	(156,164)	(76,426)	(124,598)
Accounts payable	998,502	(253,994)	(889,663)
Accrued compensation	185,724	(626,385)	439,537
Other accrued expenses	(65,990)	(960,896)	1,389,988
Net cash provided by operating activities	9,347,184	11,317,036	13,645,832
Investing Activities
Purchases of property, plant and equipment	(3,633,165)	(5,523,742)	(4,216,970)
Proceeds from sale of equipment and other assets	22,500	2,839	44,184
Business acquisitions	(5,034,289)	0	0
Net cash used in investing activities	(8,644,954)	(5,520,903)	(4,172,786)
Financing Activities
Principal payments on long-term debt	(1,785,714)	(1,428,571)	(1,250,000)
Proceeds from issuance of long-term debt	0	0	5,000,000
Principal payments on revolving credit loan	0	0	(3,000,000)
Proceeds from sales of Common Stock	271,600	13,580	61,110
Tax benefit from disqualifying disposition of incentive stock options and exercise of non-qualified stock options	8,882	0	0
Dividends paid	(2,987,480)	(2,612,839)	(3,108,577)
Net cash used in financing activities	(4,492,712)	(4,027,830)	(2,297,467)
Effect of exchange rate changes on cash	(363,435)	(262,086)	159,268
Net change in cash and cash equivalents	(4,153,917)	1,506,217	7,334,847
Cash and cash equivalents at beginning of year	19,988,361	18,482,144	11,147,297
Cash and cash equivalents at end of year	$ 15,834,444	$ 19,988,361	$ 18,482,144