Investments, Amortized Cost, Gross Unrealized Gains and Losses and Fair Value of Investment (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Debt Securities [Abstract]
Amortized cost	$ 478,769	$ 486,993
Gross unrealized gains	277	50
Gross unrealized losses	(44,731)	(47,537)
Fair value	434,315	439,506
U.S. Agency Securities [Member]
Debt Securities [Abstract]
Amortized cost	74,064	78,556
Gross unrealized gains	0	0
Gross unrealized losses	(7,197)	(7,879)
Fair value	66,867	70,677
U.S. Treasury Securities [Member]
Debt Securities [Abstract]
Amortized cost	162,365	162,236
Gross unrealized gains	0	0
Gross unrealized losses	(12,574)	(13,666)
Fair value	149,791	148,570
Obligations of State and Political Subdivisions [Member]
Debt Securities [Abstract]
Amortized cost	109,365	120,562
Gross unrealized gains	7	35
Gross unrealized losses	(8,929)	(10,297)
Fair value	100,443	110,300
Corporate Obligations [Member]
Debt Securities [Abstract]
Amortized cost	13,363	10,335
Gross unrealized gains	260	0
Gross unrealized losses	(1,416)	(952)
Fair value	12,207	9,383
Mortgage-backed Securities in Government Sponsored Entities [Member]
Debt Securities [Abstract]
Amortized cost	119,612	115,304
Gross unrealized gains	10	15
Gross unrealized losses	(14,615)	(14,743)
Fair value	$ 105,007	$ 100,576

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
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Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
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Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
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