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Investments (Unrealized Gain (Loss) On Investments) (Details) - USD ($)	Mar. 31, 2021	Dec. 31, 2020
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	$ 420,184,000	$ 384,369,000
Gross unrealized gains	7,546,000	13,272,000
Gross unrealized losses	(5,552,000)	(701,000)
Fair Value	422,178,000	396,940,000
U.S. Government And Agency Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	21,070,000	12,594,000
Gross unrealized gains	16,000	20,000
Gross unrealized losses	(170,000)	(40,000)
Fair Value	20,916,000	12,574,000
Municipal Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	235,808,000	236,253,000
Gross unrealized gains	5,582,000	11,020,000
Gross unrealized losses	(4,132,000)	(219,000)
Fair Value	237,258,000	247,054,000
Corporate Securities
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	22,268,000	20,421,000
Gross unrealized gains	153,000	22,000
Gross unrealized losses	(264,000)	(155,000)
Fair Value	22,157,000	20,288,000
Agency Mortgage-Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	85,429,000	70,443,000
Gross unrealized gains	1,360,000	1,905,000
Gross unrealized losses	(815,000)	(107,000)
Fair Value	85,974,000	72,241,000
Private-Label Mortgage-Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	11,966,000	8,412,000
Gross unrealized gains	45,000	56,000
Gross unrealized losses	(62,000)	(15,000)
Fair Value	11,949,000	8,453,000
Asset-Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	43,643,000	36,246,000
Gross unrealized gains	390,000	249,000
Gross unrealized losses	(109,000)	(165,000)
Fair Value	$ 43,924,000	$ 36,330,000

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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=121645371&loc=d3e27161-111563

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