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Investment Securities - Narrative (Details)	Jun. 30, 2021 USD ($) security	Dec. 31, 2020 USD ($) security
Investments, Debt and Equity Securities [Abstract]
Held-to-maturity, allowance for credit Loss | $	$ 0	$ 0
Number of investment securities in unrealized loss position	23	10
Number of investment securities in unrealized loss position longer than 12 months	4
Number of investment securities in unrealized loss position less than 12 months	19
Debt securities, available-for-sale unrealized loss position, allowance for credit loss | $	$ 0

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

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

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

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

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

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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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