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Schedule of Available-for-sale Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Investment Holdings [Line Items]
Amortized cost	$ 312,251	$ 284,758
Gross unrealized gains	8,983	12,542
Gross unrealized losses	(329)	(30)
Estimated fair value	320,905	297,270
US Treasury Securities [Member]
Investment Holdings [Line Items]
Amortized cost	20,330	2,000
Gross unrealized gains	30	37
Gross unrealized losses	(1)
Estimated fair value	20,359	2,037
U.S. Federal Agency Obligations [Member]
Investment Holdings [Line Items]
Amortized cost	18,748	18,804
Gross unrealized gains	123	138
Gross unrealized losses	(10)	(18)
Estimated fair value	18,861	18,924
Municipal Obligations, Tax Exempt [Member]
Investment Holdings [Line Items]
Amortized cost	138,162	136,321
Gross unrealized gains	4,998	6,367
Gross unrealized losses	(55)	(12)
Estimated fair value	143,105	142,676
Municipal Obligations, Taxable [Member]
Investment Holdings [Line Items]
Amortized cost	39,866	46,643
Gross unrealized gains	1,376	2,892
Gross unrealized losses	(104)
Estimated fair value	41,138	49,535
Agency Mortgage-backed Securities [Member]
Investment Holdings [Line Items]
Amortized cost	89,690	75,530
Gross unrealized gains	2,456	3,108
Gross unrealized losses	(159)
Estimated fair value	91,987	78,638
Certificates of Deposit [Member]
Investment Holdings [Line Items]
Amortized cost	5,455	5,460
Gross unrealized gains
Gross unrealized losses
Estimated fair value	$ 5,455	$ 5,460

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Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27161-111563

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Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

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