v3.21.2
ACQUISITIONS - Narrative (Details)
$ in Thousands
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 26, 2021
USD ($)
acquisition
Sep. 27, 2020
USD ($)
acquisition
Sep. 26, 2021
USD ($)
acquisition
facility
Sep. 27, 2020
USD ($)
acquisition
Dec. 31, 2020
USD ($)
acquisition
Business Acquisition [Line Items]          
Number of acquisitions | acquisition   6   9  
Total sales $ 1,060,177 $ 700,707 $ 2,930,613 $ 1,713,984  
Operating income 93,273 59,829 257,020 111,214  
Cash payments related to contingent consideration liabilities     1,600 2,000  
Selling, general and administrative 64,245 38,184 175,842 105,681  
Number of immaterial acquisitions | acquisition         4
Cash, net of cash acquired     297,701 123,382  
Goodwill 478,955   478,955   $ 395,800
Pro forma amortization expense $ 200 5,200 $ 4,000 16,300  
2021 Acquisitions          
Business Acquisition [Line Items]          
Number of acquisitions | acquisition 3   10    
Total sales $ 84,000   $ 146,100    
Operating income 6,600 2,100 12,600 2,200  
Cash payments related to contingent consideration liabilities     $ 4,540    
Number of material acquisitions | acquisition     5    
Number of immaterial acquisitions | acquisition     5    
Cash, net of cash acquired     $ 298,384    
Business combination, consideration transferred, equity interests issued and issuable     10,211    
Inventories 46,099   46,099    
Property, plant & equipment 53,570   53,570    
Goodwill 75,770   $ 75,770    
2021 Acquisitions | Minimum          
Business Acquisition [Line Items]          
Contingent consideration, performance period     1 year    
2021 Acquisitions | Maximum          
Business Acquisition [Line Items]          
Contingent consideration, performance period     3 years    
2020 Acquisitions          
Business Acquisition [Line Items]          
Number of acquisitions | acquisition         11
Total sales   $ 19,600   $ 23,300  
Cash payments related to contingent consideration liabilities         $ 4,763
Number of material acquisitions | acquisition         7
Cash, net of cash acquired         $ 306,319
Business combination, consideration transferred, equity interests issued and issuable         0
Inventories         25,395
Property, plant & equipment         65,083
Goodwill         $ 90,522
2020 Acquisitions | Minimum          
Business Acquisition [Line Items]          
Contingent consideration, performance period         1 year
2020 Acquisitions | Maximum          
Business Acquisition [Line Items]          
Contingent consideration, performance period         3 years
Certain Acquisitions          
Business Acquisition [Line Items]          
Fair value of estimated contingent consideration payments 9,800   $ 9,800   $ 6,900
Contingent consideration arrangements maximum payments amount 19,600   19,600    
Cash payments related to contingent consideration liabilities 1,500   2,500    
Selling, general and administrative     900    
Certain Acquisitions | Accrued liabilities          
Business Acquisition [Line Items]          
Fair value of estimated contingent consideration payments 3,700   3,700   1,600
Certain Acquisitions | Other long-term liabilities          
Business Acquisition [Line Items]          
Fair value of estimated contingent consideration payments 6,100   6,100   5,300
One Acquisition In 2021          
Business Acquisition [Line Items]          
Total sales 53,500   85,600    
Operating income 2,600   4,500    
Business combination and liabilities assumed, cash and equivalents 149,300   149,300    
Business combination, consideration transferred, equity interests issued and issuable     10,200    
Inventories 25,800   25,800    
Property, plant & equipment 28,400   28,400    
Identifiable intangible assets 85,000   85,000    
Accounts payable and accrued liabilities 18,100   18,100    
Operating lease right of use assets and liabilities 11,500   11,500    
Goodwill $ 33,600   $ 33,600    
Alpha Systems LLC          
Business Acquisition [Line Items]          
Number of facilities acquired | facility     9    
One Acquisitions In 2020          
Business Acquisition [Line Items]          
Inventories         2,900
Property, plant & equipment         49,300
Identifiable intangible assets         49,100
Accounts payable and accrued liabilities         2,600
Operating lease right of use assets and liabilities         4,900
Goodwill         32,600
Cash consideration         $ 129,700