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Share-Based Payment Awards - Time-Vested Restricted Stock Units - Additional Information (Detail) - 2016 Long Term Incentive Plan [Member]	1 Months Ended	12 Months Ended
	Jan. 31, 2019	Dec. 31, 2019
Class of Stock [Line Items]
Ratable annual vesting period of equity awards	4 years
RSU [Member]
Class of Stock [Line Items]
Ratable annual vesting period of equity awards		3 years
Weighted average remaining vesting term		1 year 14 days

X

- Definition

Share based compensation arrangement by share based payment award equity instruments other than options vested weighted average remaining contractual term.

+ References

No definition available.

+ 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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Namespace Prefix:	us-gaap_
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X

- Definition

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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- Details

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X

- Details

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Namespace Prefix:
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Period Type: