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Notes Payable and Credit Agreement - The Company’s Credit Agreement and Related Credit Facilities (Details) - USD ($)
Feb. 14, 2020
Dec. 31, 2021
Dec. 31, 2020
Jun. 14, 2019
Feb. 09, 2018
Debt Instrument [Line Items]          
Term loan   $ 842,322,000 $ 857,961,000    
Term Loan Credit Facility          
Debt Instrument [Line Items]          
Debt issuance fees incurred $ 4,144,000        
Unamortized debt issuance costs 1,681,000        
Senior Credit Facility | Line of Credit          
Debt Instrument [Line Items]          
Maximum borrowing capacity 75,000,000       $ 400,000,000
Debt collateral   21,408,000      
Available credit   $ 378,592,000      
Secured Debt | Term Loan Credit Facility          
Debt Instrument [Line Items]          
Maximum borrowing capacity       $ 150,000,000  
Term loan $ 250,000,000        
Annual amortization percentage, first year 2.50%        
Annual amortization percentage, after first year 5.00%        
Revolving Credit Facility and Secured Debt | Term Loan Credit Facility | Minimum | LIBOR          
Debt Instrument [Line Items]          
Basis spread on variable rate 1.00%        
Revolving Credit Facility and Secured Debt | Term Loan Credit Facility | Minimum | Base Rate          
Debt Instrument [Line Items]          
Basis spread on variable rate 0.00%        
Revolving Credit Facility and Secured Debt | Term Loan Credit Facility | Maximum | LIBOR          
Debt Instrument [Line Items]          
Basis spread on variable rate 1.75%        
Revolving Credit Facility and Secured Debt | Term Loan Credit Facility | Maximum | Base Rate          
Debt Instrument [Line Items]          
Basis spread on variable rate 0.75%        
Revolving Credit Facility, Swing Line Loan | Line of Credit          
Debt Instrument [Line Items]          
Maximum borrowing capacity $ 75,000,000