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, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Financial Instrument [Line Items]
Gain (Loss) On Assets and Liabilities Measured On A Recurring Basis	$ (541)	$ (230)	$ 232	$ 566
Mortgage Loans Held for Sale [Member]
Financial Instrument [Line Items]
Gain (Loss) On Assets and Liabilities Measured On A Recurring Basis	(1,338)	(1,964)	(911)	(2,981)
Forward Sales of Mortgage Backed Securities [Member]
Financial Instrument [Line Items]
Gain (Loss) On Assets and Liabilities Measured On A Recurring Basis	1,670	2,299	507	3,631
Interest Rate Lock Commitments [Member]
Financial Instrument [Line Items]
Gain (Loss) On Assets and Liabilities Measured On A Recurring Basis	(853)	(686)	704	(258)
Whole Loan Contracts [Member]
Financial Instrument [Line Items]
Gain (Loss) On Assets and Liabilities Measured On A Recurring Basis	$ (20)	$ 121	$ (68)	$ 174