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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

X

- Definition

Restructuring and Related Cost, Expected Number of Positions Eliminated, Percent

+ References

No definition available.

+ Details

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X

- 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

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X

- 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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