Intangible Assets (Tables)

3 Months Ended

Mar. 29, 2019

Goodwill And Intangible Assets Disclosure [Abstract]

Schedule of Finite-Lived Intangible Assets

Intangible assets, net consisted of the following (in thousands):

	March 29, 2019							December 28, 2018
Long-lived amortized intangible assets	Gross Carrying Amount		Accumulated Amortization			Net		Gross Carrying Amount		Accumulated Amortization			Net
Patents and licenses	$	9,284	$	(9,021	)	$	263	$	9,257	$	(9,014	)	$	243