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Summary of Significant Accounting Policies - Summary of Impact of Adoption of Topic 326 on consolidated financial statements (Parenthetical) (Detail) $ in Thousands	Jan. 01, 2020 USD ($)
Other Assets | ASC 326 | Adoption of Topic 326 Increase/(Decrease)
Schedule Of Significant Accounting Policies [Line Items]
Expected credit loss on deferred billings	$ 7,858

X

- Definition

Deferred billings allowance for credit losses.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Schedule Of Significant Accounting Policies [Line Items]

+ References

No definition available.

+ Details

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X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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Data Type:	na
Balance Type:
Period Type:

X

- Details

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