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Investment Securities - Narrative (Details)	1 Months Ended	6 Months Ended
	Mar. 31, 2022 USD ($)	Jun. 30, 2022 USD ($) security	Jun. 30, 2021 USD ($)	Dec. 31, 2021 USD ($) security
Debt Securities, Available-for-sale [Line Items]
Held-to-maturity, allowance for credit Loss		$ 0		$ 0
Transfer of securities from available-for-sale to held-to-maturity at fair value	$ 357,500,000
Net unrealized pre-tax loss		67,310,000		$ 13,026,000
Sales of investment securities		$ 0	$ 0
Number of investment securities in unrealized loss position | security		409		217
Number of investment securities in unrealized loss position longer than 12 months | security		18
Number of investment securities in unrealized loss position less than 12 months | security		391
Debt securities, available-for-sale unrealized loss position, allowance for credit loss		$ 0
Accumulated Other Comprehensive Income (Loss), Net of Tax
Debt Securities, Available-for-sale [Line Items]
Net unrealized pre-tax loss	$ 14,800,000

X

- Definition

Debt Securities, Available-For-Sale Unrealized Loss Position, Allowance For Credit Loss

+ References

No definition available.

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- Definition

Marketable Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions

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- Definition

Marketable Securities In Unrealized Loss Positions, Qualitative Disclosure, Number Of Positions, Less Than 12 Months

+ References

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- Definition

Marketable Securities In Unrealized Loss Positions, Qualitative Disclosure, Number Of Positions, Longer Than 12 Months

+ References

No definition available.

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

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Amount of credit loss expense on investment in debt security measured at amortized cost (held-to-maturity) transferred into held-to-maturity out 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 320
-SubTopic 10
-Section 45
-Paragraph 8B
-URI https://asc.fasb.org/extlink&oid=124260329&loc=SL120268709-111562

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- Definition

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

+ References

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

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- Definition

Aggregate cash proceeds received from a combination of transactions that are classified as investing activities in which assets, which may include one or more investments, are sold to third-party buyers. This element can be used by entities to aggregate proceeds from all asset sales that are classified as investing activities.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3179-108585

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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