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Debt - Additional Information (Detail)
3 Months Ended 12 Months Ended
Nov. 22, 2019
USD ($)
Jul. 22, 2015
Mar. 31, 2021
USD ($)
Mar. 31, 2020
USD ($)
Dec. 31, 2020
USD ($)
Aug. 17, 2015
USD ($)
Debt Instrument [Line Items]            
Net change in unrealized gain (loss) on derivative financial instruments       $ (331,000)    
Revolving Credit Facility [Member]            
Debt Instrument [Line Items]            
Revolving Credit Facility, maximum borrowing capacity $ 250,000,000.0          
Revolving Credit Facility, outstanding     $ 0      
Financial covenants, description     As of March 31, 2021, the minimum fixed charge coverage ratio covenant under our revolving credit facility was not applicable, due to our level of borrowing availability. The minimum fixed charge coverage ratio, which is only tested in limited situations, is 1.0 to 1.0 through the end of the facility.      
Revolving Credit Facility [Member] | Letter Of Credit Subfacility [Member]            
Debt Instrument [Line Items]            
Revolving Credit Facility, current capacity 50,000,000.0          
Revolving Credit Facility [Member] | Swingline [Member]            
Debt Instrument [Line Items]            
Revolving Credit Facility, current capacity 20,000,000.0          
Revolving Credit Facility [Member] | Subfacility [Member]            
Debt Instrument [Line Items]            
Revolving Credit Facility, maximum borrowing capacity 100,000,000.0          
Minimum [Member] | Revolving Credit Facility [Member]            
Debt Instrument [Line Items]            
Fixed charge coverage ratio   1.0 1.0      
Interest Rate Hedging [Member]            
Debt Instrument [Line Items]            
Aggregate notional amount of derivative instruments           $ 400,000,000.0
Derivative contracts maturity date     Jul. 22, 2020      
Net change in unrealized gain (loss) on derivative financial instruments       (300,000)    
Reclassified from other comprehensive loss to earnings       500,000    
Interest rate derivative contracts outstanding     $ 0      
Interest Rate Hedging [Member] | Maximum [Member]            
Debt Instrument [Line Items]            
Unrealized gain (loss) on interest rate derivative instruments       $ 100,000    
Interest Rate Hedging [Member] | Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member]            
Debt Instrument [Line Items]            
Aggregate notional amount of derivative instruments 29,500,000          
Interest Rate Hedging [Member] | Cash Flow Hedging [Member] | Not Designated as Hedging Instrument [Member]            
Debt Instrument [Line Items]            
Aggregate notional amount of derivative instruments 29,500,000          
Senior Secured Notes [Member] | Senior Secured Notes Due February 15, 2025 [Member]            
Debt Instrument [Line Items]            
Term loan, face amount $ 306,000,000.0   $ 306,000,000   $ 306,000,000  
Debt instrument, interest rate, stated percentage 9.00%          
Term loan, due date Feb. 15, 2025   Feb. 15, 2025   Feb. 15, 2025  
Debt instrument basis spread 9.00%          
Repayment frequency     Interest is payable semi-annually in arrears on February 15 and August 15 of each year, beginning on February 15, 2020.      
Percentage of outstanding borrowing commitment issued as discount 2.00%          
Term Loan Facility [Member] | Term Loan Due November 22, 2024 [Member]            
Debt Instrument [Line Items]            
Term loan, face amount $ 380,000,000.0   $ 380,000,000   $ 380,000,000  
Term loan, due date Nov. 22, 2024   Nov. 22, 2024   Nov. 22, 2024  
Debt instrument basis spread     7.25%      
Percentage of outstanding borrowing commitment issued as discount 4.00%          
Amount to be repaid quarterly $ 4,800,000          
Term Loan Facility [Member] | Term Loan Due November 22, 2024 [Member] | London Interbank Offered Rate (LIBOR) [Member]            
Debt Instrument [Line Items]            
Debt instrument basis spread 6.25%          
Term Loan Facility [Member] | Term Loan Due November 22, 2024 [Member] | Alternate Base Rate [Member]            
Debt Instrument [Line Items]            
Debt instrument basis spread 5.25%