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Long-term Debt - Additional Information (Detail) - USD ($)
1 Months Ended 12 Months Ended
Dec. 31, 2019
Sep. 30, 2019
Dec. 31, 2020
Debt Instrument [Line Items]      
Term loan facility maturity period   5 years  
Deferred financing costs and debt issuance costs, net $ 8,200,000   $ 7,000,000.0
Assets relating to master loan agreements, Gross 264,266,000   293,080,000
Capital leased assets, net book value 106,410,000   104,022,000
Vehicle and Equipment      
Debt Instrument [Line Items]      
Assets relating to master loan agreements, Gross 130,200,000   132,200,000
Capital leased assets, net book value 68,200,000   $ 65,700,000
Master Loan Agreements      
Debt Instrument [Line Items]      
Term loan facility maturity period     60 months
5.75% Senior Notes Due 2028 | Senior Notes      
Debt Instrument [Line Items]      
Notes payable Interest rate   5.75% 5.75%
Debt instrument, face amount   $ 300,000,000.0  
Debt instrument, Frequency of periodic payment of interest     semi-annually
Proceeds from senior note issuance   $ 295,000,000.0  
Market capitalization (as percent)   2.00%  
Term Loan Amendment Agreement      
Debt Instrument [Line Items]      
Debt instrument, face amount $ 400,000,000    
Term loan facility maturity period 7 years    
Term Loan Amendment Agreement | Term Loan      
Debt Instrument [Line Items]      
Margin interest rate percentage 1.25%    
Deferred financing costs and debt issuance costs, net     $ 198,700,000
Term Loan Amendment Agreement | Term Loan | LIBOR | Minimum      
Debt Instrument [Line Items]      
Margin interest rate percentage 2.25%    
Term Loan Amendment Agreement | Term Loan | LIBOR | Maximum      
Debt Instrument [Line Items]      
Margin interest rate percentage 2.50%    
ABL Credit Agreement      
Debt Instrument [Line Items]      
Market capitalization (as percent)   2.00%  
Fixed charge coverage ratio   1.0  
ABL Credit Agreement | Letter of Credit      
Debt Instrument [Line Items]      
Remaining borrowing availability     161,200,000
ABL Credit Agreement | Eurodollar | Minimum      
Debt Instrument [Line Items]      
Margin interest rate percentage   1.25%  
ABL Credit Agreement | Eurodollar | Maximum      
Debt Instrument [Line Items]      
Margin interest rate percentage   1.50%  
ABL Credit Agreement | Base Rate | Minimum      
Debt Instrument [Line Items]      
Margin interest rate percentage   0.25%  
ABL Credit Agreement | Base Rate | Maximum      
Debt Instrument [Line Items]      
Margin interest rate percentage   0.50%  
ABL Credit Agreement | Revolving Credit Facility      
Debt Instrument [Line Items]      
Line of credit maximum borrowing capacity   $ 200,000,000.0  
Borrowings outstanding     $ 64,100,000
ABL Credit Agreement | Letter of Credit      
Debt Instrument [Line Items]      
Line of credit maximum borrowing capacity   75,000,000.0  
ABL Credit Agreement | Incremental Revolving Credit Facility      
Debt Instrument [Line Items]      
Line of credit maximum borrowing capacity   50,000,000.0  
ABL Credit Agreement | Swing Line Loans      
Debt Instrument [Line Items]      
Line of credit maximum borrowing capacity   $ 20,000,000.0