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Inventory (Capitalization of Interest) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Real Estate Inventory, Capitalized Interest Costs [Roll Forward]        
Interest capitalized at beginning of period $ 18,380 $ 18,876 $ 17,520 $ 18,596
Interest incurred 3,250 2,708 6,101 5,667
Interest charged to cost of revenues (2,670) (2,793) (4,661) (5,472)
Interest capitalized at end of period $ 18,960 $ 18,791 $ 18,960 $ 18,791
Document Period End Date     Jun. 30, 2021  
Capitalized interest as a percentage of inventory 1.70% 2.50% 1.70% 2.50%