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Stock Plans - Restricted Stock Units - Vesting (Details) - Restricted Stock Units (RSUs) | 12 Months Ended
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Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Vesting period from the date of grant for restricted stock awards granted | 1 year
Minimum [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Vesting period from the date of grant for restricted stock awards granted | 1 year
Maximum [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Vesting period from the date of grant for restricted stock awards granted | 4 years

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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 + Details
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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. + Details
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- Details
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- Details
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- Details
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