Investment Securities (Investments Classified by Contractual Maturity Date) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Schedule of Investments [Line Items]
Available-for-sale Securities, Amortized Cost, Due in 1 year or less	$ 1,250
Available-for-sale Securities, Amortized Cost, Due in 1 year or less	3,781
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Amortized Cost Basis, Total	5,031
Available-for-sale debt securities, Amortized Cost	5,033	$ 5,752
Available-for-sale Securities, Fair Value, Due after 1 year but within 5 years	1,247
Available-for-sale Securities, Fair Value, Due after 5 years but within 10 years	3,766
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Fair Value, Total	5,013
Available-for-sale debt securities, Fair Value	5,015	5,748
Held-to-maturity, Due in 1 year or less, Amortized Cost	3,891
Held-to-maturity, Due after 1 year through 5 years, Amortized Cost	35,364
Held-to-maturity, Due after 5 years through 10 years, Amortized Cost	85,737
Held-to-maturity Securities, Debt Maturities, Single Maturity Date, Amortized Cost Basis	124,992
Held-to-maturity debt securities, Amortized Cost	152,791	128,292
Held-to-maturity, Due in 1 year or less, Fair Value	3,920
Held-to-maturity, Due after 1 year through 5, Fair Value	36,900
Held-to-maturity, Due after 5 years through 10 years, Fair Value	86,374
Held-to-maturity Securities, Debt Maturities, Single Maturity Date, Fair Value	127,194
Held-to-maturity, Fair Value	155,680	$ 132,794
Mortgage-backed securities [Member]
Schedule of Investments [Line Items]
Available-for-sale Securities without a Single Maturity Date, Amortized Cost	2
Available-for-sale securities without a Single Maturity Date, Fair Value	2
Held-to-maturity without Single Maturity Date, Amortized Cost	27,799
Held-to-maturity without Single Maturity Date, Fair Value	$ 28,486