Joint Ventures - Additional Information (Detail) $ in Thousands	Sep. 30, 2025 USD ($) lot joint_venture	Dec. 31, 2024 USD ($)
Joint Ventures [Line Items]
Aggregate investment	$ 66,500
Number of joint ventures | joint_venture	5
Expected production of finished lots | lot	7,300
Total lots controlled by company under the joint venture | lot	6,950
Total lots either under contract with unrelated parties or not under the current contract | lot	350
Additional funding commitments in the aggregate	$ 11,700
Other Assets
Joint Ventures [Line Items]
Aggregate investment		$ 29,300
Home Building Segment
Joint Ventures [Line Items]
Restricted cash and cash equivalents	44,034	42,172
Accrued expenses and other liabilities	$ 344,658	$ 441,300