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Fair Value Measurements and Fair Value of Financial Instruments (Details) - Schedule of fair value recurring basis - Municipal Securities [Member] - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Balance of recurring Level 3 assets at January 1	$ 8,844	$ 9,114
Principal paydowns	(208)	(270)
Balance of recurring Level 3 assets at December 31	$ 8,636	$ 8,844

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- Definition

Fair value of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the Other assumptions market participants would use in pricing principal pay down.

+ References

No definition available.

+ Details

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Balance Type:	debit
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- Definition

Fair value of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258

+ Details

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Data Type:	xbrli:monetaryItemType
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- Details

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Period Type: