Investment Securities, Held-to-maturity Securities, Amortized Cost and Fair Value (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Amortized cost and fair value of the held to maturity securities [Abstract]
Amortized Cost	$ 10,701	$ 13,824
Gross Unrecognized Gains	945	1,164
Gross Unrecognized Losses	0	0
Fair Value	11,646	14,988
Mortgage-Backed Securities and Collateralized Mortgage Obligations - Residential [Member]
Amortized cost and fair value of the held to maturity securities [Abstract]
Amortized Cost	10,701	13,824
Gross Unrecognized Gains	945	1,164
Gross Unrecognized Losses	0	0
Fair Value	$ 11,646	$ 14,988

Amount, before allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity).

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
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Amount of accumulated unrecognized gain on investment in debt security measured at amortized cost (held-to-maturity).

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Amount of accumulated unrealized loss on investment in debt security measured at amortized cost (held-to-maturity).

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Fair value of investment in debt security measured at amortized cost (held-to-maturity).

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