Equity Method Investment (Details) loan in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021 USD ($) loan	Jun. 30, 2020 USD ($)	Jun. 30, 2021 USD ($) loan	Jun. 30, 2020 USD ($)	Dec. 31, 2020 USD ($)
Schedule of Equity Method Investments [Line Items]
Equity method investment income	$ 4,528	$ 0	$ 10,997	$ 0
Net income before noncontrolling interest	9,247	$ 18,034	17,332	$ 19,082
Locked mortgage pipeline	1,240,000		1,240,000		$ 1,540,000
Intercoastal
Schedule of Equity Method Investments [Line Items]
Equity method investment income	4,500		11,000
Equity Method Investment, Nonconsolidated Investee or Group of Investees | Intercoastal
Schedule of Equity Method Investments [Line Items]
Total revenues	40,080		90,877
Net income before noncontrolling interest	10,921		26,785
Gain on sale of loans	$ 44,308		$ 91,902
Volume of loans sold | loan	1,492,309		3,270,399