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Investment Securities - Summary of Credit Quality Indicators of Available-for-Sale Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Schedule of Available-for-sale Securities [Line Items]
Investment securities available-for-sale (at fair value)	$ 695,485	$ 706,289
AAA
Schedule of Available-for-sale Securities [Line Items]
Investment securities available-for-sale (at fair value)	692,645	703,445
Not Rated
Schedule of Available-for-sale Securities [Line Items]
Investment securities available-for-sale (at fair value)	2,840	2,844
U.S. Treasury Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Investment securities available-for-sale (at fair value)	72,154	71,388
U.S. Treasury Securities [Member] | AAA
Schedule of Available-for-sale Securities [Line Items]
Investment securities available-for-sale (at fair value)	72,154	71,388
Residential Mortgage Pass-Through Securities Issued or Guaranteed by U.S. Government Agencies or Sponsored Enterprises [Member].
Schedule of Available-for-sale Securities [Line Items]
Investment securities available-for-sale (at fair value)	222,209	226,131
Residential Mortgage Pass-Through Securities Issued or Guaranteed by U.S. Government Agencies or Sponsored Enterprises [Member]. | AAA
Schedule of Available-for-sale Securities [Line Items]
Investment securities available-for-sale (at fair value)	222,209	226,131
Other Residential MBS Issued or Guaranteed by U.S. Government Agencies or Sponsored Enterprises [Member]
Schedule of Available-for-sale Securities [Line Items]
Investment securities available-for-sale (at fair value)	398,282	405,926
Other Residential MBS Issued or Guaranteed by U.S. Government Agencies or Sponsored Enterprises [Member] | AAA
Schedule of Available-for-sale Securities [Line Items]
Investment securities available-for-sale (at fair value)	398,282	405,926
Municipal Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Investment securities available-for-sale (at fair value)	154	153
Municipal Securities [Member] | Not Rated
Schedule of Available-for-sale Securities [Line Items]
Investment securities available-for-sale (at fair value)	154	153
Corporate Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Investment securities available-for-sale (at fair value)	1,892	1,920
Corporate Debt Securities [Member] | Not Rated
Schedule of Available-for-sale Securities [Line Items]
Investment securities available-for-sale (at fair value)	1,892	1,920
Other Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Investment securities available-for-sale (at fair value)	794	771
Other Securities [Member] | Not Rated
Schedule of Available-for-sale Securities [Line Items]
Investment securities available-for-sale (at fair value)	$ 794	$ 771

X

- Definition

Amount 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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(6))
-URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 30
-Section 45
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=124260329&loc=d3e26610-111562

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (aa)
-URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27161-111563

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+ References

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