Quarterly report pursuant to Section 13 or 15(d)

Credit Facilities and Debt - Additional Information (Details)

v3.21.1
Credit Facilities and Debt - Additional Information (Details) - USD ($)
3 Months Ended
Mar. 26, 2021
Sep. 29, 2020
Apr. 17, 2020
Mar. 31, 2021
Line of Credit Facility [Line Items]        
Revolving credit facility       $ 40,000,000.0
Maturity date       Jun. 30, 2022
Extended maturity date Jun. 30, 2023      
Surety bonds       $ 230,200,000
Surety bonds terminated       $ 119,400,000
Maximum        
Line of Credit Facility [Line Items]        
Letter of credit facility $ 20,000,000.0      
LC Facility        
Line of Credit Facility [Line Items]        
Fees on undrawn borrowings (percentage)       0.40%
Total outstanding letters of credit       $ 10,300,000
Letter of Credit        
Line of Credit Facility [Line Items]        
Stated interest rate (percentage)       2.00%
PPP Loan        
Line of Credit Facility [Line Items]        
Maturity date     Apr. 17, 2022  
Stated interest rate (percentage)     1.00%  
Payment term description       The PPP Loan matures on April 17, 2022, bears interest at a fixed rate of 1.0 percent per annum and is payable in monthly installments commencing on the earlier of the date on which the amount of loan forgiveness is determined or March 17, 2021.
Unsecured loan amount     $ 10,000,000.0  
Prepayment penalties     $ 0  
PPP loan proceeds used for permissible expenses, percentage related to payroll costs     93.00%  
Loan forgiveness   $ 8,900,000    
Loan payments   $ 0    
PPP Loan threshold requiring an audit by the SBA       $ 2,000,000.0