Subsequent Event - (Details) - Subsequent event $ in Millions	Jul. 31, 2017 USD ($)
Subsequent Events
Maximum amount of common stock, debt securities, warrants and/or units allowed under one or more registered offerings per the universal shelf registration statement	$ 225.0
Sales Agreement with Cowen
Subsequent Events
Aggregate offering price of common stock	$ 50.0

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.

No definition available.

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