Stockholder's Equity - Stock-Based Compensation Narrative (Detail) - Directors and Employees $ in Millions	12 Months Ended
Dec. 31, 2019 USD ($) shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of equity instruments awarded in period (in shares) \| shares	2,388,752
Fair market value of shares granted \| $	$ 10.2
Term of options granted period (years)	10 years
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
RSU's Vested per performance criteria during period (years)	1 year
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
RSU's Vested per performance criteria during period (years)	3 years

Share based compensation arrangement by share based payment award options granted in period fair value.

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- Definition

Share based compensation arrangements by share based payment award term of options granted.

+ References

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.

+ 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

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