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Lines of Credit (Details Textual) - USD ($)
Dec. 28, 2020
Apr. 21, 2022
Jun. 30, 2021
Jun. 28, 2021
Apr. 22, 2021
Feb. 04, 2021
Dec. 31, 2020
Dec. 27, 2018
Aug. 09, 2018
Line of Credit Facility [Line Items]                  
Letters of credit outstanding, amount     $ 151,700,000            
Financial Services:                  
Line of Credit Facility [Line Items]                  
Warehouse agreement borrowings     $ 164,681,000       $ 202,390,000    
Maximum                  
Line of Credit Facility [Line Items]                  
Borrowing base required leverage ratio 55.00%                
Revolving Credit Facility                  
Line of Credit Facility [Line Items]                  
Maximum borrowing capacity $ 1,200,000,000             $ 1,000,000,000.0  
Extended maturity amount 1,125,000,000                
Potential maximum borrowing capacity, subject to additional commitments $ 1,700,000,000                
Interest rate, stated percentage 0.00%                
Maximum leverage ratio 55.00%                
Minimum common stock outstanding ownership, percentage     50.00%            
Letters of credit outstanding, amount     $ 37,700,000       25,100,000    
Revolving credit facility     10,000,000.0       $ 10,000,000.0    
Remaining borrowing capacity     1,150,000,000            
Revolving Credit Facility | Fed Funds Effective Rate Overnight Index Swap Rate                  
Line of Credit Facility [Line Items]                  
Basis spread on variable rate 1.50%                
Revolving Credit Facility | Specified Eurocurrency Rate                  
Line of Credit Facility [Line Items]                  
Basis spread on variable rate 1.00%                
Mortgage Repurchase Facility | Warehouse Agreement Borrowings                  
Line of Credit Facility [Line Items]                  
Maximum borrowing capacity     $ 75,000,000            
Maximum increase to borrowing capacity $ 50,000,000     $ 25,000,000 $ 175,000,000 $ 200,000,000     $ 75,000,000
Mortgage Repurchase Facility | Forecast | Warehouse Agreement Borrowings                  
Line of Credit Facility [Line Items]                  
Maximum increase to borrowing capacity   $ 150,000,000