Identified Intangible Assets and Goodwill, Net (Details) - USD ($) $ in Thousands	Mar. 30, 2024	Dec. 31, 2023	Dec. 31, 2022
Finite-Lived Intangible Assets [Line Items]
Identified intangible assets, gross	$ 67,530	$ 67,546
Accumulated amortization	48,687	47,332
Identified intangible assets, net	18,843	20,214
Goodwill	84,739	84,800	$ 70,107
Customer lists/relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Identified intangible assets, gross	41,535	41,679
Accumulated amortization	29,962	29,252
Employment-related [Member]
Finite-Lived Intangible Assets [Line Items]
Identified intangible assets, gross	13,139	13,007
Accumulated amortization	10,342	9,957
Tradenames [Member]
Finite-Lived Intangible Assets [Line Items]
Identified intangible assets, gross	12,856	12,860
Accumulated amortization	$ 8,383	$ 8,123