Earnings per Share - Computation of Basic and Diluted Earnings Per Share, Including Antidilutive Securities Excluded from Computation of Earnings Per Share (Parenthetical) (Detail) |
12 Months Ended |
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Dec. 31, 2020 | |
| Restricted Stock Awards [Member] | 2013 Omnibus Equity Incentive Plan [Member] | |
| Earnings Per Share, Basic and Diluted, by Common Class, Including Two Class Method [Line Items] | |
| Vesting period | 1 year |
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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. No definition available.
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- 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. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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