Organization - Narrative (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2022 USD ($) bank_branch	Jun. 30, 2021 USD ($)
Business Acquisition [Line Items]
Transfer of securities available-for-sale to held-to-maturity | $	$ 2,260,407	$ 0
CALIFORNIA
Business Acquisition [Line Items]
Retail branch locations	69
NORTH CAROLINA
Business Acquisition [Line Items]
Retail branch locations	1
COLORADO
Business Acquisition [Line Items]
Retail branch locations	1