Gains from Mortgage Banking Activities/Originations, Net (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Mortgage Banking [Abstract]
Fair value of expected net future cash flows from servicing recognized at commitment, net	$ 60,948	$ 37,424	$ 132,423	$ 78,657
Loan originations related fees and sales premiums, net	30,244	34,908	78,263	70,112
Total	$ 91,192	$ 72,332	$ 210,686	$ 148,769