v3.20.2
ACQUISITIONS - Narrative (Details)
$ in Thousands
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 28, 2020
USD ($)
Jun. 30, 2019
USD ($)
Jun. 28, 2020
USD ($)
acquisition
Jun. 30, 2019
USD ($)
Dec. 31, 2019
USD ($)
acquisition
Business Acquisition [Line Items]          
Number of acquisitions | acquisition     3   3
Excluding assessed tax $ 424,045 $ 613,218 $ 1,013,277 $ 1,221,436  
Fair value of estimated contingent consideration payments 7,800   7,800   $ 9,600
Contingent consideration arrangements maximum payments amount 12,300   12,300    
Cash payments related to contingent consideration liabilities     2,000 4,416  
Business combination contingent consideration         1 year
Net initial purchase price         $ 53,100
Amortization expense   $ 600 200 $ 1,200  
Acquired Entities          
Business Acquisition [Line Items]          
Excluding assessed tax 3,300   3,800    
Maple City Woodworking Corporation          
Business Acquisition [Line Items]          
Net initial purchase price     25,000    
Accrued Liabilities          
Business Acquisition [Line Items]          
Fair value of estimated contingent consideration payments 5,900   5,900   2,000
Other Long-term Liabilities          
Business Acquisition [Line Items]          
Fair value of estimated contingent consideration payments $ 1,900   $ 1,900   $ 7,600