Share-Based Payments - Summary of Vesting Criteria for Restricted Stock Units (Detail) - Restricted Stock Units (RSUs) - 2007 Omnibus Equity Incentive Plan	12 Months Ended
Dec. 31, 2019 shares
2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant Year	2019
Granted (in shares)	3,447
Service Period	6 months
Period in which units to be settled into shares of common stock	2019
2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant Year	2019
Granted (in shares)	156,804
Service Period	3 years
Period in which units to be settled into shares of common stock	2022

hare-based compensation arrangement by share-based payment award, extended.

No definition available.

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- Definition

Share-based compensation arrangement by share-based payment award, settled period.

+ References

No definition available.

+ Details

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- Definition

Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ 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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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ 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 (c)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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- 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.

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