Investment in Unconsolidated Entities (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Schedule of Equity Method Investments [Line Items]
Equity in income of unconsolidated entities	$ 4,221	$ 5,687
Investments in unconsolidated entities	77,059		$ 74,224
GB Challenger, LLC
Schedule of Equity Method Investments [Line Items]
Equity in income of unconsolidated entities	3,025	4,067
Investments in unconsolidated entities	51,043		49,897
GBTM Sendera, LLC
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated entities	15,839		14,319
EJB River Holdings, LLC
Schedule of Equity Method Investments [Line Items]
Equity in income of unconsolidated entities	503	738
Investments in unconsolidated entities	9,057		8,554
BHome Mortgage, LLC
Schedule of Equity Method Investments [Line Items]
Equity in income of unconsolidated entities	693	554
Investments in unconsolidated entities	1,120		1,147
Green Brick Mortgage, LLC
Schedule of Equity Method Investments [Line Items]
Equity in income of unconsolidated entities		328
Investments in unconsolidated entities	0		$ 307
Equity Method Investment Nonconsolidated Investees
Schedule of Equity Method Investments [Line Items]
Equity in income of unconsolidated entities	$ 4,221	$ 5,687