Stock-Based Compensation - Additional Information (Detail)	12 Months Ended
Dec. 31, 2020
Stock Options [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period for stock options and restricted stock	3 years
Contractual terms	10 years
Restricted Stock [Member] \| Minimum [Member] \| Employee [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period for stock options and restricted stock	3 years
Restricted Stock [Member] \| Minimum [Member] \| Director [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period for stock options and restricted stock	1 year
Restricted Stock [Member] \| Maximum [Member] \| Employee [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period for stock options and restricted stock	4 years
Restricted Stock [Member] \| Maximum [Member] \| Director [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period for stock options and restricted stock	3 years
Restricted Stock Units [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period for stock options and restricted stock	3 years
Performance Restricted Stock Units [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period for stock options and restricted stock	3 years

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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
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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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- Definition

Weighted average remaining contractual term for option awards outstanding, 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 (e)(1)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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