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Investments - Carrying Value and Amortized Cost of Company's Investments Summarized by Major Security Type (Parenthetical) (Detail) - Maximum $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($)
Corporate debt securities
Schedule of Available-for-sale Securities [Line Items]
Unrealized Loss on Securities	$ 500
US Government Sponsored Enterprises Debt Securities
Schedule of Available-for-sale Securities [Line Items]
Unrealized Loss on Securities	$ 500

X

- Definition

Amount of unrealized loss 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 http://asc.fasb.org/extlink&oid=123581744&loc=d3e27161-111563

+ Details

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X

- Definition

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.

+ References

No definition available.

+ Details

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- Details

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- Details

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