Variable interest entities - Schedule of Real Estate Properties (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Summary of Interests in Land Option Agreements [Abstract]
Deposits or Investments	$ 140,974	$ 140,449
Remaining Purchase Price	1,375,682	1,304,358
Option contracts
Summary of Interests in Land Option Agreements [Abstract]
Deposits or Investments	132,688	132,163
Remaining Purchase Price	1,340,942	1,268,959
Option contracts with unconsolidated entities
Summary of Interests in Land Option Agreements [Abstract]
Deposits or Investments	8,286	8,286
Remaining Purchase Price	$ 34,740	$ 35,399