Investment Securities, Available-for-sale Securities, Gross Unrealized Loss Position (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Available for sale securities unrealized loss position - Fair Value [Abstract]
Less than 12 months - Fair Value	$ 149,571	$ 54,340
12 months or more - Fair Value	31,032	4,937
Total - Fair Value	180,603	59,277
Available for sale securities unrealized loss position - Gross Unrealized Loss [Abstract]
Less than 12 months - Gross Unrealized Loss	2,132	153
12 months or more - Gross Unrealized Loss	437	63
Total - Gross Unrealized Loss	2,569	216
U. S. Government Sponsored Enterprises [Member]
Available for sale securities unrealized loss position - Fair Value [Abstract]
Less than 12 months - Fair Value	49,760	19,968
12 months or more - Fair Value	9,989	0
Total - Fair Value	59,749	19,968
Available for sale securities unrealized loss position - Gross Unrealized Loss [Abstract]
Less than 12 months - Gross Unrealized Loss	214	32
12 months or more - Gross Unrealized Loss	11	0
Total - Gross Unrealized Loss	225	32
Mortgage-Backed Securities and Collateralized Mortgage Obligations - Residential [Member]
Available for sale securities unrealized loss position - Fair Value [Abstract]
Less than 12 months - Fair Value	94,466	19,471
12 months or more - Fair Value	6,361	0
Total - Fair Value	100,827	19,471
Available for sale securities unrealized loss position - Gross Unrealized Loss [Abstract]
Less than 12 months - Gross Unrealized Loss	1,910	22
12 months or more - Gross Unrealized Loss	108	0
Total - Gross Unrealized Loss	2,018	22
Corporate Bonds [Member]
Available for sale securities unrealized loss position - Fair Value [Abstract]
Less than 12 months - Fair Value	5,345	14,901
12 months or more - Fair Value	14,682	4,937
Total - Fair Value	20,027	19,838
Available for sale securities unrealized loss position - Gross Unrealized Loss [Abstract]
Less than 12 months - Gross Unrealized Loss	8	99
12 months or more - Gross Unrealized Loss	318	63
Total - Gross Unrealized Loss	$ 326	$ 162