Fair Value - Changes in Level 3 Assets Measured at Fair Value on a Recurring Basis (Details) - Recurring Basis [Member] - Level 3 [Member] - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2022	Mar. 31, 2021
MSR [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance		$ 87,687	$ 66,464
Total net (loss) gain included in Mortgage banking, net	[1]	18,235	8,593
Additions		5,128	7,978
Sales		0	0
Ending Balance		111,050	83,035
The amount of total gains (losses) for the period included in earnings that are attributable to the change in unrealized gains or losses still held, end of period		22,020	13,696
Other Assets - Derivatives [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance		1,859	9,560
Total net (loss) gain included in Mortgage banking, net	[1]	(842)	2,748
Additions		0	0
Sales		(1,537)	(8,203)
Ending Balance		(520)	4,105
The amount of total gains (losses) for the period included in earnings that are attributable to the change in unrealized gains or losses still held, end of period		$ (1,341)	$ 1,579

[1] Total net (loss) gain included in Mortgage banking, net relating to the MSR includes changes in fair value due to market changes and due to run-off