Investment Securities (Securities With A Continuous Unrealized Losses Position) (Details) - USD ($)	Mar. 31, 2020	Dec. 31, 2019
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, Fair Value	$ 45,576,000	$ 93,855,000
Less than 12 months, Unrealized Loss	(4,030,000)	(1,336,000)
12 months or more, Fair Value	74,562,000	73,978,000
12 months or more, Unrealized Loss	(12,438,000)	(2,371,000)
Total, Fair Value	120,138,000	167,833,000
Total, Unrealized Loss	(16,468,000)	(3,707,000)
State And Municipals [Member]
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, Fair Value	7,765,000	6,662,000
Less than 12 months, Unrealized Loss	(127,000)	(83,000)
12 months or more, Fair Value		5,084,000
12 months or more, Unrealized Loss		(156,000)
Total, Fair Value	7,765,000	11,746,000
Total, Unrealized Loss	(127,000)	(239,000)
Pass-Through Mortgage Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, Fair Value		5,287,000
Less than 12 months, Unrealized Loss		(14,000)
12 months or more, Fair Value		4,084,000
12 months or more, Unrealized Loss		(25,000)
Total, Fair Value		9,371,000
Total, Unrealized Loss		(39,000)
Collateralized Mortgage Obligations [Member]
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, Fair Value	9,691,000	30,886,000
Less than 12 months, Unrealized Loss	(23,000)	(259,000)
Total, Fair Value	9,691,000	30,886,000
Total, Unrealized Loss	(23,000)	(259,000)
Corporate Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, Fair Value	28,120,000	51,020,000
Less than 12 months, Unrealized Loss	(3,880,000)	(980,000)
12 months or more, Fair Value	74,562,000	64,810,000
12 months or more, Unrealized Loss	(12,438,000)	(2,190,000)
Total, Fair Value	102,682,000	115,830,000
Total, Unrealized Loss	$ (16,318,000)	$ (3,170,000)