XML 106 R82.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

Stock-based Compensation and Outstanding Awards - Summary of Status of Nonvested Shares of RSAs and RSUs (Parenthetical) (Detail) | 12 Months Ended
--- | ---
Dec. 31, 2019 shares
Restricted Stock and Restricted Stock Units [Member] |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
Shares withheld and retired to satisfy minimum tax withholding | 216,000

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
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of shares used to settle grantee's tax withholding obligation for award under share-based payment arrangement. + References No definition available. + Details
Name: | us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_RestrictedStockUnitsRSUMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |