Allowance for Credit Losses - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Provision for Loan and Lease Losses [Abstract]
Economic forecast period	2 years
Economic forecast revision period	3 years
Increase (decrease) in allowance for credit losses for loans held-for-investment	$ (2,100)	$ 70,300
Provision (recapture) for credit losses	8,459	(67,069)	$ 172,262
Net charge-offs	(10,600)	3,200
Initial ACL Recorded for PCD Loans			21,242
Off-balance sheet, credit loss, liability	23,641	27,290	31,118	$ 3,279
Provision for credit losses on off-balance sheet commitments	$ (3,649)	$ (3,828)	$ 19,554