Equity Method Investment (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2020	Sep. 30, 2019
Schedule of Equity Method Investments [Line Items]
Noninterest income	$ 1,792			$ 620			$ 5,204	$ 1,861
Net income	6,491	$ 18,034	$ 1,048	$ 4,327	$ 15,377	$ 3,192	25,573	$ 22,896
Equity Method Investment, Nonconsolidated Investee or Group of Investees | Intercoastal
Schedule of Equity Method Investments [Line Items]
Noninterest income	62,915						62,915
Gross profit	33,765						33,765
Net income	$ 28,979						$ 28,979