Real estate inventory and capitalized interest - Narrative (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2026 USD ($) community	Jun. 30, 2025 USD ($)	Jun. 30, 2026 USD ($) community	Jun. 30, 2025 USD ($) community	Dec. 31, 2025 USD ($) community
Real Estate [Line Items]
Number of active communities | community	7		7		2
Real estate carrying value under evaluation	$ 24,400		$ 24,400		$ 10,100
Impairment of real estate inventory			4,074	$ 642
Southeast Reporting Segment
Real Estate [Line Items]
Impairment of real estate inventory	$ 2,600		$ 3,500
Number of communities | community	2		3
Central Reporting Segment
Real Estate [Line Items]
Impairment of real estate inventory	$ 500	$ 0	$ 500	$ 600
Number of communities | community	1		1	1