Loan Sales and Servicing - Real Estate Mortgages Sold With Retained Servicing (Details) - USD ($) $ in Thousands		Sep. 30, 2020	Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
MSRs		$ 28,731	$ 42,022
Residential Real Estate Mortgage Loans Sold with Retained Servicing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded balance of residential real estate mortgage loans sold with retained servicing	[1]	4,447,793	4,534,202
MSRs	[2]	$ 28,731	$ 42,022

[1] These loans are not included in loans on the Company's Unaudited Condensed Consolidated Balance Sheets.

[2] Recorded under the fair value method and included in other assets on the Company's Unaudited Condensed Consolidated Balance Sheets.