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Debt Credit Agreements (Details Textual) (Details) - USD ($)
2 Months Ended 12 Months Ended
Dec. 19, 2018
Feb. 23, 2021
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Nov. 30, 2021
Nov. 18, 2021
Nov. 01, 2021
Jun. 30, 2021
Oct. 30, 2020
Oct. 31, 2019
Debt Instrument [Line Items]                      
Borrowings under credit agreement     $ 100,000,000 $ 440,000,000              
Secured debt, percentage of mortgages used as security     85.00%                
Repay deficit in agreement, period     6 months                
Deferred loan costs     $ 3,900,000                
Repayment of borrowings     $ 600,000,000 $ 35,000,000 $ 35,000,000            
Repayments of borrowings   $ 25,000,000                  
Debt instrument, interest rate, increase (decrease)     0.50%                
Third Amended Credit Agreement                      
Debt Instrument [Line Items]                      
Effective interest rate     1.85%                
EBITDA ratio, debt outstanding, cash and cash equivalents limit     $ 75,000,000                
Debt to EBITDA ratio covenant     3.50                
Third Amended Credit Agreement | Minimum                      
Debt Instrument [Line Items]                      
Commitment fee percentage     0.375%                
Third Amended Credit Agreement | Maximum                      
Debt Instrument [Line Items]                      
Commitment fee percentage     0.50%                
San Mateo Credit Facility                      
Debt Instrument [Line Items]                      
Effective interest rate     2.11%                
Eurodollar | Third Amended Credit Agreement | Minimum                      
Debt Instrument [Line Items]                      
Additional interest rate     1.75%                
Eurodollar | Third Amended Credit Agreement | Maximum                      
Debt Instrument [Line Items]                      
Additional interest rate     2.75%                
Federal Funds Effective Rate | Third Amended Credit Agreement                      
Debt Instrument [Line Items]                      
Basis spread on variable rate     0.50%                
Base Rate Loan | Third Amended Credit Agreement | Maximum                      
Debt Instrument [Line Items]                      
Additional interest rate     1.75%                
Unsecured Debt | SBA Loan, CARES Act [Member]                      
Debt Instrument [Line Items]                      
Long-term debt     $ 7,500,000                
Revolving Credit Facility                      
Debt Instrument [Line Items]                      
Senior secured revolving credit maximum facility                   $ 700,000,000  
Revolving Credit Facility | Third Amended Credit Agreement                      
Debt Instrument [Line Items]                      
Increase in borrowing capacity           $ 1,350,000,000   $ 900,000,000      
Maximum borrowing capacity, amended                   $ 1,500,000,000  
Line of Credit | Fourth Amended Credit Agreement                      
Debt Instrument [Line Items]                      
Long-term line of credit             $ 25,000,000        
Line of Credit | San Mateo Credit Facility                      
Debt Instrument [Line Items]                      
Outstanding letters of credit     9,000,000                
Long-term line of credit     385,000,000                
Senior secured revolving credit maximum facility $ 250,000,000                   $ 375,000,000
Repayment of borrowings   $ 30,000,000                  
Accordian feature, increase limit $ 700,000,000               $ 450,000,000    
Deferred loan costs     1,900,000                
Line of Credit | San Mateo Credit Facility | Minimum                      
Debt Instrument [Line Items]                      
Commitment fee percentage 0.30%                    
Line of Credit | San Mateo Credit Facility | Maximum                      
Debt Instrument [Line Items]                      
Commitment fee percentage 0.50%                    
Letter of Credit | Credit Agreement                      
Debt Instrument [Line Items]                      
Outstanding letters of credit     $ 45,800,000                
Libor Rate | Third Amended Credit Agreement                      
Debt Instrument [Line Items]                      
Basis spread on variable rate     1.00%                
Base Rate Loan | Minimum                      
Debt Instrument [Line Items]                      
Additional interest rate     0.75%                
Federal Funds Effective Rate | Line of Credit | San Mateo Credit Facility                      
Debt Instrument [Line Items]                      
Basis spread on variable rate 0.50%                    
Adjusted LIBO Rate | Line of Credit | San Mateo Credit Facility                      
Debt Instrument [Line Items]                      
Basis spread on variable rate 1.00%                    
Adjusted LIBO Rate | Line of Credit | San Mateo Credit Facility | Minimum                      
Debt Instrument [Line Items]                      
Additional interest rate 1.00%                    
Adjusted LIBO Rate | Line of Credit | San Mateo Credit Facility | Maximum                      
Debt Instrument [Line Items]                      
Additional interest rate 2.00%                    
Statutory Reserve Rate | Line of Credit | San Mateo Credit Facility | Minimum                      
Debt Instrument [Line Items]                      
Additional interest rate 2.00%                    
Statutory Reserve Rate | Line of Credit | San Mateo Credit Facility | Maximum                      
Debt Instrument [Line Items]                      
Additional interest rate 3.00%                    
The Bank Of Nova Scotia | San Mateo Credit Facility                      
Debt Instrument [Line Items]                      
Debt to EBITDA ratio covenant 5.00                    
Interest coverage ratio 2.50