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Subsequent Events (Details) - USD ($) $ in Millions | Jun. 30, 2018 | Jan. 03, 2018 | Jun. 21, 2017
--- | --- | --- | ---
Subsequent Event [Line Items] |  |  |
Decrease in number of employees (percent) | 50.00% |  | 50.00%
Subsequent event |  |  |
Subsequent Event [Line Items] |  |  |
Decrease in number of employees (percent) |  | 50.00% |
Subsequent event | Minimum |  |  |
Subsequent Event [Line Items] |  |  |
Expected restructuring cost |  | $ 0.5 |
Subsequent event | Maximum |  |  |
Subsequent Event [Line Items] |  |  |
Expected restructuring cost |  | $ 1.0 |

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- Definition Restructuring and Related Cost, Expected Number of Positions Eliminated, Percent + References No definition available. + Details
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- Definition Amount expected to be recognized in earnings for the specified restructuring cost. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 + Details
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- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
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