Investment Securities (Investments Classified by Contractual Maturity Date) (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Schedule of Investments [Line Items]
Available-for-sale Securities, Amortized Cost, Due in 1 year or less	$ 2,250
Available-for-sale Securities, Amortized Cost, Due in 1 year or less	1,000
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Amortized Cost Basis, Total	3,250
Available-for-sale debt securities, Amortized Cost	3,252	$ 5,752
Available-for-sale Securities, Fair Value, Due after 1 year but within 5 years	2,250
Available-for-sale Securities, Fair Value, Due after 5 years but within 10 years	998
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Fair Value, Total	3,248
Available-for-sale debt securities, Fair Value	3,250	5,748
Held-to-maturity, Due in 1 year or less, Amortized Cost	3,465
Held-to-maturity, Due after 1 year through 5 years, Amortized Cost	38,808
Held-to-maturity, Due after 5 years through 10 years, Amortized Cost	52,560
Held-to-maturity Securities, Debt Maturities, Single Maturity Date, Amortized Cost Basis	94,833
Held-to-maturity debt securities, Amortized Cost	130,560	128,292
Held-to-maturity, Due in 1 year or less, Fair Value	3,511
Held-to-maturity, Due after 1 year through 5, Fair Value	40,397
Held-to-maturity, Due after 5 years through 10 years, Fair Value	53,021
Held-to-maturity Securities, Debt Maturities, Single Maturity Date, Fair Value	96,929
Held-to-maturity, Fair Value	133,519	$ 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	35,727
Held-to-maturity without Single Maturity Date, Fair Value	$ 36,590