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Stock-Based Compensation - Unrecognized cost (Details) - Restricted stock, restricted stock units, performance-based restricted stock units, cash-settled restricted stock units and cash-settled performance units $ in Millions | 9 Months Ended
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Sep. 30, 2020 USD ($)
Unrecognized compensation |
Unrecognized compensation cost related to unvested awards (in dollars) | $ 16.0
Weighted-average period over which the expected unrecognized compensation cost related to unvested stock options will be recognized | 1 year 9 months 18 days

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- Definition Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents 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 (i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options. + 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 (i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Details
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