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Stock-Based Compensation - Unrecognized Compensation Expense (Details) $ in Millions | 3 Months Ended
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Mar. 31, 2020 USD ($)
Stock options |
Stock-Based Compensation |
Expected pre-tax stock-based compensation expense | $ 2.4
Weighted average remaining service period | 1 year 3 months 18 days
Restricted stock units |
Stock-Based Compensation |
Expected pre-tax stock-based compensation expense | $ 21.1
Weighted average remaining service period | 2 years 4 months 24 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=116856206&loc=d3e5070-113901 + Details
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