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Real Estate Inventories - Summary of Interest Incurred, Capitalized and Expensed (Detail) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Real Estate [Abstract]    
Interest incurred $ 23,373 $ 21,520
Interest capitalized (23,373) (21,520)
Interest expensed 0 0
Real Estate Inventory, Capitalized Interest Costs [Roll Forward]    
Capitalized interest in beginning inventory 184,400 176,348
Interest capitalized as a cost of inventory 23,373 21,520
Interest previously capitalized as a cost of inventory, included in cost of sales (14,333) (14,242)
Capitalized interest in ending inventory $ 193,440 $ 183,626