Investment Securities, Securities in Continuous Unrealized Loss Position (Details)	12 Months Ended
	Dec. 31, 2020 USD ($) Security	Dec. 31, 2019 USD ($)
Investment Securities, Qualitative Disclosure [Abstract]
Number of investment securities held | Security	649
Less than 12 months, number of positions | Security	13
12 months or more, number of positions | Security	83
Available-for-sale Securities in Continuous Unrealized Loss Position [Abstract]
Less than 12 months fair value	$ 25,924,000	$ 133,698,000
Less than 12 months unrealized loss	66,000	94,000
12 months or more fair value	6,303,000	5,911,000
12 months or more unrealized loss	93,000	118,000
Total fair value	32,227,000	139,609,000
Total unrealized loss	$ 159,000	212,000
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months fair value		355,000
12 months or more fair value		0
Total fair value		355,000
Less than 12 months unrealized loss		12,000
12 months or more unrealized loss		0
Total unrealized loss		12,000
Number of HTM investments with gross unrealized losses | Security	0
Obligations of States and Political Subdivisions [Member]
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months fair value		355,000
12 months or more fair value		0
Total fair value		355,000
Less than 12 months unrealized loss		12,000
12 months or more unrealized loss		0
Total unrealized loss	$ 0	12,000
Less than 12 months, number of positions | Security	0
12 months or more, number of positions | Security	0
Percentage of portfolio rated at either issue or issuer level	100.00%
Government Agency & Government-Sponsored Entities [Member]
Available-for-sale Securities in Continuous Unrealized Loss Position [Abstract]
Less than 12 months, number of positions | Security	0
12 months or more, number of positions | Security	0
US Treasury Notes [Member]
Available-for-sale Securities in Continuous Unrealized Loss Position [Abstract]
Less than 12 months, number of positions | Security	0
12 months or more, number of positions | Security	0
US Government Agency SBA [Member]
Available-for-sale Securities in Continuous Unrealized Loss Position [Abstract]
Less than 12 months fair value	$ 1,741,000	2,693,000
Less than 12 months unrealized loss	3,000	6,000
12 months or more fair value	6,126,000	5,198,000
12 months or more unrealized loss	90,000	107,000
Total fair value	7,867,000	7,891,000
Total unrealized loss	$ 93,000	113,000
Less than 12 months, number of positions | Security	8
12 months or more, number of positions | Security	65
Mortgage Backed Securities [Member]
Available-for-sale Securities in Continuous Unrealized Loss Position [Abstract]
Less than 12 months fair value	$ 20,142,000	131,005,000
Less than 12 months unrealized loss	45,000	88,000
12 months or more fair value	177,000	713,000
12 months or more unrealized loss	3,000	11,000
Total fair value	20,319,000	131,718,000
Total unrealized loss	$ 48,000	$ 99,000
Less than 12 months, number of positions | Security	3
12 months or more, number of positions | Security	18
Corporate Securities [Member]
Available-for-sale Securities in Continuous Unrealized Loss Position [Abstract]
Less than 12 months fair value	$ 4,041,000
Less than 12 months unrealized loss	18,000
12 months or more fair value	0
12 months or more unrealized loss	0
Total fair value	4,041,000
Total unrealized loss	$ 18,000
Less than 12 months, number of positions | Security	2
12 months or more, number of positions | Security	0