Fair Value Measurements (Loss) Gain On Assets and Liabilities Measured On A Recurring Basis (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Financial Instrument [Line Items]
Gain (Loss) On Assets and Liabilities Measured On A Recurring Basis	$ 782	$ (541)	$ 2,404	$ 232
Mortgage Loans Held for Sale [Member]
Financial Instrument [Line Items]
Gain (Loss) On Assets and Liabilities Measured On A Recurring Basis	(1,704)	(1,338)	(1,962)	(911)
Forward Sales of Mortgage Backed Securities [Member]
Financial Instrument [Line Items]
Gain (Loss) On Assets and Liabilities Measured On A Recurring Basis	3,877	1,670	4,893	507
Interest Rate Lock Commitments [Member]
Financial Instrument [Line Items]
Gain (Loss) On Assets and Liabilities Measured On A Recurring Basis	(1,440)	(853)	(940)	704
Whole Loan Contracts [Member]
Financial Instrument [Line Items]
Gain (Loss) On Assets and Liabilities Measured On A Recurring Basis	$ 49	$ (20)	$ 413	$ (68)