Stockholders' Equity - 2019 Registered Direct Offering - Additional Information (Details) - Registered Direct Offering 2019 $ / shares in Units, $ in Millions	1 Months Ended
Oct. 31, 2019 USD ($) $ / shares shares
Subsidiary, Sale of Stock [Line Items]
Common stock sold in registered direct offering \| shares	10,869,566
Stock price (USD per share) \| $ / shares	$ 2.30
Sale of stock proceeds, net \| $	$ 23.4

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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