Earnings Per Share - Summary of computation of basic and diluted EPS (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 29, 2023	Dec. 30, 2022
Numerator:
Net (loss) income attributable to Shimmick Corporation	$ (2,546)	$ 3,760
Numerator for basic and diluted EPS	$ (2,546)	$ 3,760
Denominator:
Denominator for basic EPS - weighted average shares	22,356	21,909
Effect of dilutive securities:
Employee stock options	0	0
Dilutive potential common shares	0	0
Denominator for diluted EPS - adjusted weighted average shares and assumed conversions	22,356	21,909
Basic EPS:
Basic EPS	$ (0.11)	$ 0.17
Diluted EPS:
Diluted EPS	$ (0.11)	$ 0.17