Nature of Business and Liquidity - Liquidity (Additional Information) (Details) - Subsequent Event - IPO $ / shares in Units, $ in Millions	1 Months Ended
Jul. 31, 2018 USD ($) $ / shares shares
Subsidiary, Sale of Stock [Line Items]
Shares sold in offering (in shares) \| shares	20,700,000
Offering price per share (in dollars per share) \| $ / shares	$ 15
Net proceeds from stock offering \| $	$ 284.3

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.

No definition available.

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