Certain Significant Estimates (Tables)

12 Months Ended

Dec. 29, 2018

Product Warranty [Member]

SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]

Valuation and Qualifying Accounts [Table Text Block]

Changes in product warranty were as follows:

In Thousands	2018			2017			2016
Beginning balance	$	691		$	876		$	847
Additions		1,448			1,036			1,501
Deductions		(1,437	)		(1,221	)		(1,472	)
Ending balance	$	702		$	691		$	876

Inventory Valuation Reserves [Member]

SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]

Valuation and Qualifying Accounts [Table Text Block]

Changes in inventory valuation reserves were as follows:

In Thousands	2018			2017			2016
Beginning balance	$	504		$	415		$	471
Additions		383			288			327
Deductions		(431	)		(199	)		(383	)
Ending balance	$	456		$	504		$	415

Allowance For Doubtful Accounts [Member]

SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]

Valuation and Qualifying Accounts [Table Text Block]

Changes in allowance for doubtful accounts were as follows:

In Thousands	2018			2017			2016
Beginning balance	$	623		$	910		$	1,086
Additions		155			775			1,758
Deductions		(246	)		(1,062	)		(1,934	)
Ending balance	$	532		$	623		$	910

Customer Allowances [Member]

SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]

Valuation and Qualifying Accounts [Table Text Block]

Changes in customer allowances for advertising subsidies, volume rebates and catalog allowances were as follows:

In Thousands	2018			2017			2016
Beginning balance	$	3,357		$	2,777		$	2,151
Additions		6,575			6,608			5,778
Deductions		(8,382	)		(6,028	)		(5,152	)
Ending balance	$	1,550		$	3,357		$	2,777