Investment Securities (Held-to-maturity Securities with Unrealized Loss) (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2021 USD ($) securities	Jun. 30, 2020 USD ($)	Jun. 30, 2021 USD ($) securities	Jun. 30, 2020 USD ($)	Dec. 31, 2020 USD ($) securities
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 months, fair value	$ 84,863,000		$ 84,863,000		$ 18,662,000
Less than 12 months, unrealized loss	$ 2,515,000		$ 2,515,000		$ 165,000
Less than 12 months, no. of securities | securities	21		21		5
12 months or more, fair value	$ 0		$ 0		$ 0
12 months or more, unrealized loss	$ 0		$ 0		$ 0
12 months or more, no. of securities | securities	0		0		0
Total fair value	$ 84,863,000		$ 84,863,000		$ 18,662,000
Total unrealized loss	2,515,000		2,515,000		165,000
Gross losses realized	499,000	$ 3,000	1,174,000	$ 3,000
Realized Gain (Loss) on Held-to-Maturity Securities			0	$ 0
Securities Investment [Member]
Schedule of Held-to-maturity Securities [Line Items]
Interest Receivable	4,300,000		4,300,000		2,700,000
Residential mortgage-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Total unrealized loss	0		0		0
Commercial mortgage-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 months, fair value	11,534,000		11,534,000
Less than 12 months, unrealized loss	$ 195,000		$ 195,000
Less than 12 months, no. of securities | securities	2		2
12 months or more, fair value	$ 0		$ 0
12 months or more, unrealized loss	$ 0		$ 0
12 months or more, no. of securities | securities	0		0
Total fair value	$ 11,534,000		$ 11,534,000
Total unrealized loss	195,000		195,000		0
States and political subdivisions
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 months, fair value	47,469,000		47,469,000		18,662,000
Less than 12 months, unrealized loss	$ 1,563,000		$ 1,563,000		$ 165,000
Less than 12 months, no. of securities | securities	14		14		5
12 months or more, fair value	$ 0		$ 0		$ 0
12 months or more, unrealized loss	$ 0		$ 0		$ 0
12 months or more, no. of securities | securities	0		0		0
Total fair value	$ 47,469,000		$ 47,469,000		$ 18,662,000
Total unrealized loss	1,563,000		1,563,000		$ 165,000
Agency Securities
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 months, fair value	25,860,000		25,860,000
Less than 12 months, unrealized loss	$ 757,000		$ 757,000
Less than 12 months, no. of securities | securities	5		5
12 months or more, fair value	$ 0		$ 0
12 months or more, unrealized loss	$ 0		$ 0
12 months or more, no. of securities | securities	0		0
Total fair value	$ 25,860,000		$ 25,860,000
Total unrealized loss	$ 757,000		$ 757,000