Lease Agreements (Details) $ in Millions |
3 Months Ended | ||
|---|---|---|---|
|
Mar. 31, 2018
USD ($)
item
|
Jul. 31, 2017
ft²
|
Dec. 31, 2014
ft²
|
|
| Sublease Agreement | |||
| Number of lease renewal periods | item | 2 | ||
| Lease renewal term (in years) | 5 years | ||
| Area of real estate property (square feet) | ft² | 9,328 | 57,000 | |
| Expected income from sublease | $ | $ 21.2 |
| X | ||||||||||
- Definition Represents the information pertaining to expected income from sublease. No definition available.
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| X | ||||||||||
- Definition Represents the number of renewal term periods provided by the lessee's leasing arrangement. No definition available.
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Area of a real estate property. No definition available.
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| X | ||||||||||
- Definition Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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