Note 13 - Guarantees - Changes in Accrued Warranty (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 26, 2020	Dec. 28, 2019	Dec. 29, 2018
Beginning balance	$ 6,155	$ 8,014	$ 4,849
Warranty accruals	6,173	6,714	7,154
Warranty payments	(5,946)	(8,573)	(8,358)
Warranty liability assumed	0	0	4,369
Ending balance	$ 6,382	$ 6,155	$ 8,014

Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers.

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Amount of increase in the standard and extended product warranty accrual from a business acquisition.

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Amount of decrease in the standard and extended product warranty accrual from payments made in cash or in kind to satisfy claims under the terms of the standard and extended product warranty.

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Amount of increase in the standard and extended product warranty accrual from warranties issued.

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