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Basis of Presentation and Description of Company (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Oct. 02, 2021	Jul. 03, 2021	Apr. 03, 2021	Sep. 26, 2020	Jun. 27, 2020	Mar. 28, 2020	Oct. 02, 2021	Sep. 26, 2020
Basis of Presentation and Description of Company
Net income (loss)	$ (4,659)	$ 2,072	$ (2,722)	$ 1,385	$ 1,568	$ (978)	$ (5,309)	$ 1,975

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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