Securities - Securities Available for Sale (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
The amortized cost and estimated fair value of securities with gross unrealized gains and losses
Amortized cost	$ 615,292	$ 596,497
Gross Unrealized Gains	1,105	2,839
Gross Unrealized Losses	(63,321)	(50,723)
Fair value	553,076	548,613
Asset Pledged as Collateral
The amortized cost and estimated fair value of securities with gross unrealized gains and losses
Fair value	164,300
U.S. Treasury Securities
The amortized cost and estimated fair value of securities with gross unrealized gains and losses
Amortized cost	2,883	2,621
Gross Unrealized Losses	(19)	(41)
Fair value	2,864	2,580
Municipal Bonds
The amortized cost and estimated fair value of securities with gross unrealized gains and losses
Amortized cost	148,725	156,506
Gross Unrealized Gains		62
Gross Unrealized Losses	(26,228)	(25,214)
Fair value	122,497	131,354
Mortgage-Backed Securities
The amortized cost and estimated fair value of securities with gross unrealized gains and losses
Amortized cost	233,920	252,919
Gross Unrealized Gains	137	2,465
Gross Unrealized Losses	(23,682)	(17,600)
Fair value	210,375	237,784
Corporate Securities
The amortized cost and estimated fair value of securities with gross unrealized gains and losses
Amortized cost	134,369	116,871
Gross Unrealized Gains	268	45
Gross Unrealized Losses	(12,920)	(7,089)
Fair value	121,717	109,827
SBA Securities
The amortized cost and estimated fair value of securities with gross unrealized gains and losses
Amortized cost	19,779	20,957
Gross Unrealized Gains	312	79
Gross Unrealized Losses	(125)	(159)
Fair value	19,966	20,877
Asset-Backed Securities
The amortized cost and estimated fair value of securities with gross unrealized gains and losses
Amortized cost	75,616	46,623
Gross Unrealized Gains	388	188
Gross Unrealized Losses	(347)	(620)
Fair value	$ 75,657	$ 46,191

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
-URI https://asc.fasb.org//1943274/2147481800/320-10-50-2

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- Definition

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
-Section 50
-Paragraph 2
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481800/320-10-50-2

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Amortized cost excluding accrued interest, before allowance for credit loss, 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 326
-SubTopic 30
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479130/326-30-45-1

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Amount excluding accrued interest, 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/2009/role/commonPracticeRef
-Topic 326
-SubTopic 30
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479130/326-30-45-1

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