Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2023

Sales of accounts receivable under these agreements, and related factoring costs, which were including in selling, general and administrative expenses, were as follows:


(in thousands)	December 31, 2023		December 31, 2022		December 25, 2021
Sales of accounts receivable	$	949,517	$	1,048,671	$	935,770
Factoring costs	$	50,231	$	37,188	$	11,704

Estimated Useful Lives by Major Asset

Estimated useful lives by major asset category are as follows:


Buildings and building improvements			10 to 39 years
Machinery, equipment and tooling			3 to 10 years
Software and computer equipment			3 to 10 years
Furniture, fixtures and leasehold improvements			1 to 39 years

Property, plant and equipment include the following:


(in thousands)	December 31, 2023		December 31, 2022
Buildings	$	62,434	$	59,980
Machinery, equipment and tooling	208,086		184,184
Furniture, fixtures and leasehold improvements	17,083		12,225
Software and computer equipment	113,148		100,814
Total	400,751		357,203
Less-accumulated depreciation and amortization	(240,638)		(208,726)
Property, plant and equipment, net	$	160,113	$	148,477