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Stock-Based Compensation Plans - Schedule of Outstanding Stock-based Compensation Awards (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 USD ($)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
Unearned Compensation | $ 20,661
Weighted-Average Remaining Period (in years) | 2 years 6 months
RSUs |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
Unearned Compensation | $ 14,393
Weighted-Average Remaining Period (in years) | 2 years 8 months 12 days
PSUs |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
Unearned Compensation | $ 6,133
Weighted-Average Remaining Period (in years) | 2 years 2 months 12 days
ESPP |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
Unearned Compensation | $ 135
Weighted-Average Remaining Period (in years) | 3 months 18 days

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- Definition Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, 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 (i) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition Unrecognized cost of unvested share-based awards, other than options, awarded to employees as compensation. + 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=109197908&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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