Investment Securities - Securities Held-to-Maturity Allowance for Credit Losses (Details) $ in Thousands	6 Months Ended
Jun. 30, 2022 USD ($)
Schedule of Held-to-maturity Securities [Line Items]
Provision for Credit Losses	$ 1,500
Charge-offs	0
Recoveries	0
Allowance for Credit Losses, End of Period	1,500
Municipal securities
Schedule of Held-to-maturity Securities [Line Items]
Provision for Credit Losses	140
Charge-offs	0
Recoveries	0
Allowance for Credit Losses, End of Period	140
Corporate debt securities
Schedule of Held-to-maturity Securities [Line Items]
Provision for Credit Losses	1,360
Charge-offs	0
Recoveries	0
Allowance for Credit Losses, End of Period	$ 1,360

Amount, excluding accrued interest, of allowance for credit loss on investment in debt security measured at amortized cost (held-to-maturity).

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446

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- Definition

Amount of increase in allowance for credit loss on investment in debt security measured at amortized cost (held-to-maturity), from recovery.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 13
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447

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- Definition

Amount of writeoff of investment in debt security, measured at amortized cost (held-to-maturity), charged against allowance for credit loss.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 13
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447

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- Definition

Amount of expense (reversal of expense) for expected credit loss on investment in debt security measured at amortized cost (held-to-maturity).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447

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+ References

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