Segment information - Schedule of Balance Sheet Information (Details) - USD ($) $ in Thousands	Dec. 28, 2024	Dec. 30, 2023
Segment Reporting Information [Line Items]
Total Assets	$ 82,436	$ 18,487
Continuing and Discontinued Operation
Segment Reporting Information [Line Items]
Total Assets	82,436	18,487
Total goodwill and other intangible Assets	46,144	17,846
Fintech
Segment Reporting Information [Line Items]
Total Assets	64,217	0
Total goodwill and other intangible Assets	30,385	0
Biotech
Segment Reporting Information [Line Items]
Total Assets	16,926	17,846
Total goodwill and other intangible Assets	15,755	17,846
Corporate and other
Segment Reporting Information [Line Items]
Total Assets	1,293	641
Total goodwill and other intangible Assets	4	0
Discontinue operations | Discontinued operations
Segment Reporting Information [Line Items]
Total Assets	0	0
Total goodwill and other intangible Assets	$ 0	$ 0