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Investment Securities - Additional Information (Details)	Dec. 31, 2021 USD ($) Security	Dec. 31, 2020 USD ($) Security
Schedule Of Available For Sale Securities [Line Items]
Number of available-for-sale investment securities in continuous unrealized loss position, less than 12 months | Security	38	0
Number of domestic certificates of deposit held | Security	24
Accrued interest receivable on available-for-sale investment securities | $	$ 100,000
Maximum
Schedule Of Available For Sale Securities [Line Items]
Accrued interest receivable on available-for-sale investment securities | $		$ 100,000

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- Definition

Accrued interest receivable on available-for-sale investment securities.

+ References

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- Definition

Number of domestic certificates of deposit held.

+ References

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- Definition

Number of investments in debt securities measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for less than 12 months, without an allowance for credit loss. Includes beneficial interest in securitized financial asset.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 30
-Section 50
-Paragraph 4
-Subparagraph (b)(3)
-URI http://asc.fasb.org/extlink&oid=124269663&loc=SL82922888-210455

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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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