Convertible Preferred Stock - Series B-2 Convertible Preferred Stock (Details)	1 Months Ended	12 Months Ended
Dec. 31, 2019 $ / shares shares	Dec. 31, 2019 USD ($) $ / shares shares	Dec. 31, 2018 shares
Shares Authorized	11,000,000	11,000,000
Series B-2 Convertible Preferred Stock Member
Shares Authorized	10,165	10,165
Series B-2 convertible preferred stock
Number of shares for which unexercised prepaid forward contracts are exercisable	1,236,223
Shares issued in exchange of convertible preferred stock	695,127
Shares Authorized	10,165	10,165	0
Shares converted		190
Value of shares issued on conversion \| $		$ 153.90
Conversion Price (in dollars per share) \| $ / shares	$ 0.81	$ 0.81
Conversion ratio		190

Number of shares for which unexercised prepaid forward contracts are exercisable.

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- Definition

The price per share at which preferred stock can be converted to common stock.

+ References

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Ratio of preferred stock by stated value of conversion price.

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The value of the financial instrument issued [noncash or part noncash] in the conversion of stock. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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The number of shares converted in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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- Definition

Number of shares issued during the period as a result of the conversion of convertible securities.

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The maximum number of securities classified as temporary equity that are permitted to be issued by an entity's charter and bylaws. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer.

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