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Fair Value - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Total fair value measurement gain/(loss)     $ 35,054   $ (7,435)
Home Building Segment          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Senior Notes carrying value $ 913,963   913,963   914,888
Home Building Segment | Senior Notes due 2030          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Senior Notes carrying value 913,963   913,963   914,888
Home Building Segment | Level 2 | Fair Value, Recurring | Senior Notes due 2030          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Senior Notes fair value 792,540   792,540   788,166
Mortgage Banking | Level 2 | Not Designated as Hedging Instrument          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Fair value adjustment income (expense) 301 $ 27,540 42,489 $ 17,430  
Mortgage Banking | Level 2 | Fair Value, Recurring | Rate Lock Commitments          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Fair value disclosure, off-balance sheet risks, face amount, liability 2,618,808   2,618,808    
Total fair value measurement gain/(loss)     19,449    
Mortgage Banking | Level 2 | Fair Value, Recurring | Forward Sales Contracts          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Fair value disclosure, off-balance sheet risks, face amount, liability 2,780,429   2,780,429    
Total fair value measurement gain/(loss)     13,119    
Mortgage Banking | Level 2 | Fair Value, Recurring | Mortgages Held for Sale          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Trade and loans receivables held-for-sale, net, not part of disposal group 438,756   438,756   $ 316,806
Fair Value, principal amount, loans held for sale $ 436,270 $ 319,481 436,270 319,481  
Fair value, option, changes in fair value, gain (loss)     $ 2,486 $ 2,675