Certain Significant Estimates (Tables)

12 Months Ended

Dec. 29, 2012

Warranty Reserves [Member]

Schedule of Valuation and Qualifying Accounts Disclosure [Text Block]

A reconciliation of the liability is as follows:

In Thousands	2012			2011			2010
Beginning balance	$	869		$	656		$	737
Additions		1,524			1,087			357
Deductions		(1,085	)		(874	)		(438	)
Ending balance	$	1,308		$	869		$	656

Inventory Valuation Reserve [Member]

Schedule of Valuation and Qualifying Accounts Disclosure [Text Block]

A reconciliation of the reserve is as follows:

In Thousands	2012			2011			2010
Beginning balance	$	1,556		$	1,839		$	3,152
Additions		929			458			189
Deductions		(385	)		(741	)		(1,502	)
Ending balance	$	2,100		$	1,556		$	1,839

Allowance for Doubtful Accounts [Member]

Schedule of Valuation and Qualifying Accounts Disclosure [Text Block]

A reconciliation of the allowance is as follows:

In Thousands	2012			2011			2010
Beginning balance	$	938		$	1,204		$	1,485
Additions		450			1,125			654
Deductions		(292	)		(1,391	)		(935	)
Ending balance	$	1,096		$	938		$	1,204

Reserve for Customer Deductions [Member]

Schedule of Valuation and Qualifying Accounts Disclosure [Text Block]

A reconciliation of the liability is as follows:

In Thousands	2012			2011			2010
Beginning balance	$	2,605		$	2,398		$	2,749
Additions		6,712			5,762			5,046
Deductions		(6,636	)		(5,555	)		(5,397	)
Ending balance	$	2,681		$	2,605		$	2,398