Business, Basis of Financial Statement Presentation and Principles of Consolidation (Details) $ in Millions	1 Months Ended	3 Months Ended
	Apr. 23, 2020 USD ($) Loan	Mar. 31, 2020 USD ($) Office Loan
Business Basis Of Financial Statement Presentation And Principles Of Consolidation [Line Items]
Number of offices | Office		188
Number of individual loans modified as per CARES Act | Loan		503
Aggregate principal balances of loans modified as per CARES Act | $		$ 344.3
Period of extension on interest part of loans modified as per CARES Act		90 days
Period of extension on full payment deferrals part of loans modified as per CARES Act		90 days
Subsequent Event [Member]
Business Basis Of Financial Statement Presentation And Principles Of Consolidation [Line Items]
Number of individual loans modified as per CARES Act | Loan	1,978
Aggregate principal balances of loans modified as per CARES Act | $	$ 976.2
Period of extension on interest part of loans modified as per CARES Act	90 days
Period of extension on full payment deferrals part of loans modified as per CARES Act	90 days