Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2011

Significant Accounting Policies [Abstract]

Schedule Of Estimated Useful Life Of Property Plant And Equipment

Furniture & Fixtures	2 to 10 Years
Machinery & Equipment	2 to 10 Years
Leasehold Improvements	3 to 15 Years
Vehicles, Tooling and Desktop PCs	2 to 5 Years

Allowance For Doubtful Accounts

	YEARS ENDED
(THOUSANDS OF DOLLARS)	DECEMBER 31, 2011			JANUARY 1, 2011			JANUARY 2, 2010
Allowance for Doubtful Accounts - Beginning of Year	$	1,069		$	1,129		$	1,068
Charged to bad debt expense		68			139			691
Deductions		(117	)		(199	)		(630	)
Allowance for Doubtful Accounts - End of Year	$	1,020		$	1,069		$	1,129

Schedule Of Retrospective Impact On Consolidated Balance Sheet

(THOUSANDS OF DOLLARS)	YEAR ENDED JANUARY 1, 2011
	Originally Reported		Adjusted		Change
Consolidated Balance Sheet:
Inventories	$	31,320	$	34,548	$	3,228
Deferred income taxes		5,590		4,456		(1,134	)
Total Current Assets		90,519		92,613		2,094
Total Assets		144,626		146,720		2,094
Retained earnings		81,114		83,208		2,094
Total Shareholders' Equity		72,465		74,559		2,094
Total Liabilities and Shareholders' Equity		144,626		146,720		2,094

Schedule Of Retrospective Impact On Consolidated Statements Of Income

	YEAR ENDED JANUARY 1, 2011							YEAR ENDED JANUARY 2, 2010
	Originally Reported		Adjusted		Change			Originally Reported			Adjusted			Change
Consolidated Statements of Income:
Cost of Goods Sold	$	69,836	$	70,090	$	254		$	65,046		$	65,501		$	455
Gross Profit		88,476		88,222		(254	)		76,718			76,263			(455	)
Operating Income		9,324		9,070		(254	)		1,300			845			(455	)
Income (Loss) Before Income Taxes		8,104		7,850		(254	)		370			(85	)		(455	)
Income tax provision (benefit)		1,731		1,642		(89	)		(1,485	)		(1,644	)		(159	)
Net Income		6,373		6,208		(165	)		1,855			1,559			(296	)
Net Income Per Share:
Basic	$	0.50	$	0.49	($	0.01	)	$	0.13		$	0.11		($	0.02	)
Diluted	$	0.49	$	0.48	($	0.01	)	$	0.13		$	0.11		($	0.02	)

Schedule Of Retrospective Impact On Consolidated Statements Of Cash Flows

	YEAR ENDED JANUARY 1, 2011									YEAR ENDED JANUARY 2, 2010
	Originally Reported			Adjusted			Change			Originally Reported			Adjusted			Change
Consolidated Statements of Cash Flows:
Net Income	$	6,373		$	6,208		$	(165	)	$	1,855		$	1,559		$	(296	)
Deferred taxes		590			501			(89	)		(1,458	)		(1,617	)		(159	)
Inventory		(6,034	)		(5,780	)		254			1,659			2,114			455

Components Of Property, Plant And Equipment

	YEARS ENDED
(THOUSANDS OF DOLLARS)	DECEMBER 31, 2011		JANUARY 1, 2011
Leasehold improvements	$	2,060	$	1,826
Machinery and equipment		105,873		103,123
		107,933		104,949
Less accumulated depreciation		94,227		89,867
Property, Plant and Equipment, Net	$	13,706	$	15,082

Aggregate Accrued Warranty Costs

	YEARS ENDED
(THOUSANDS OF DOLLARS)	DECEMBER 31, 2011			JANUARY 1, 2011			JANUARY2, 2010
Accrued Warranty Costs - Beginning of Year	$	1,998		$	1,936		$	1,823
Warranty costs paid		(391	)		(735	)		(592	)
Warranty costs accrued		423			423			375
Impact of changes in estimates and assumptions		(138	)		374			330
Accrued Warranty Costs - End of Year	$	1,892		$	1,998		$	1,936