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Credit Agreement (Tables)
 3 Months Ended
Mar. 28, 2020
Debt Disclosure [Abstract]  
Schedule of Borrowings Under Credit Facility
The following table summarizes our borrowings under the credit facility ($ in thousands):
March 28,
2020		December 28,
2019
Outstanding borrowings
$446,003  $231,000  
Outstanding letters of credit
$3,997  $3,497  
Additional borrowing capacity
$—  $215,503  
Weighted-average interest rate
2.9 %3.5 %