Consolidated Condensed Statements of Changes in Stockholders’ Equity - USD ($) $ in Thousands	Total	Common Class A	Common Class B	Common Stock Common Class A	Common Stock Common Class B	Additional Paid-in Capital	Accumulated other comprehensive (loss) income	Accumulated Deficit	Non- controlling interest
Beginning balance (in shares) at Dec. 31, 2021				59,548,504	15,786,737
Beginning balance at Dec. 31, 2021	$ 607,656			$ 59	$ 16	$ 473,318	$ 179	$ (6,602)	$ 140,686
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of Class A common stock for equity plans (in shares)				2,107,995
Issuance of Class A common stock for equity plans	4,257			$ 5		4,252
Net loss	(22,820)							(18,529)	(4,291)
Change in noncontrolling interest allocation	0					2,587			(2,587)
Deferred taxes on equity rebalancing	(1,977)					(1,977)
Equity based compensation	9,505					7,624			1,881
Tax withholdings on equity compensation awards	(3,352)					(3,352)
Translation adjustment	(1,189)						(943)		(246)
Ending balance (in shares) at Jul. 02, 2022				61,656,499	15,786,737
Ending balance at Jul. 02, 2022	592,080			$ 64	$ 16	482,452	(764)	(25,131)	135,443
Beginning balance (in shares) at Apr. 02, 2022				61,357,270	15,786,737
Beginning balance at Apr. 02, 2022	593,808			$ 62	$ 16	476,661	(363)	(17,879)	135,311
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of Class A common stock for equity plans (in shares)				299,229
Issuance of Class A common stock for equity plans	2,177			$ 2		2,175
Net loss	(8,014)							(7,252)	(762)
Change in noncontrolling interest allocation	0					(65)			65
Equity based compensation	4,616					3,681			935
Translation adjustment	(507)						(401)		(106)
Ending balance (in shares) at Jul. 02, 2022				61,656,499	15,786,737
Ending balance at Jul. 02, 2022	592,080			$ 64	$ 16	482,452	(764)	(25,131)	135,443
Beginning balance (in shares) at Dec. 31, 2022		62,063,014	15,786,737	62,063,014	15,786,737
Beginning balance at Dec. 31, 2022	412,222			$ 62	$ 16	490,576	(110)	(165,306)	86,984
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of Class A common stock for equity plans (in shares)				741,492
Issuance of Class A common stock for equity plans	223			$ 1		222
Net loss	(179,178)							(142,831)	(36,347)
Change in noncontrolling interest allocation	0					385			(385)
Equity based compensation	(886)					(585)			(301)
Translation adjustment	960						765		195
Ending balance (in shares) at Jul. 01, 2023		62,804,506	15,786,737	62,804,506	15,786,737
Ending balance at Jul. 01, 2023	233,341			$ 63	$ 16	490,598	655	(308,137)	50,146
Beginning balance (in shares) at Apr. 01, 2023				62,507,917	15,786,737
Beginning balance at Apr. 01, 2023	240,362			$ 63	$ 16	492,475	413	(304,456)	51,851
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of Class A common stock for equity plans (in shares)				296,589
Issuance of Class A common stock for equity plans	139					139
Net loss	(4,731)							(3,681)	(1,050)
Change in noncontrolling interest allocation	0					108			(108)
Equity based compensation	(2,732)					(2,124)			(608)
Translation adjustment	303						242		61
Ending balance (in shares) at Jul. 01, 2023		62,804,506	15,786,737	62,804,506	15,786,737
Ending balance at Jul. 01, 2023	$ 233,341			$ 63	$ 16	$ 490,598	$ 655	$ (308,137)	$ 50,146