Stock-Based Compensation - Schedule of Outstanding Options (Details) - USD ($)	3 Months Ended	12 Months Ended
Mar. 31, 2020	Dec. 31, 2019
Number of Shares
Beginning balance (in shares)	18,248
Stock options canceled (in shares)	3,750
Ending balance (in shares)	14,498	18,248
Stock options exercisable (in shares)	14,498
Weighted Average Exercise Price
Beginning balance (in usd per share)	$ 1.74
Stock options canceled (in usd per share)	3.7
Ending balance (in usd per share)	1.23	$ 1.74
Stock options exercisable (in usd per share)	$ 1.23
Stock options outstanding, weighted average remaining contractual term	1 year 7 months 20 days	1 year 9 months 18 days
Stock options exercisable, weighted average remaining contractual term	1 year 7 months 20 days
Stock options outstanding, aggregate intrinsic value	$ 2,019	$ 2,019
Stock options exercisable, aggregate intrinsic value	$ 2,019

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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-SubTopic 10
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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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- Definition

For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

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Weighted average price of options that were either forfeited or expired.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Number of options outstanding, including both vested and non-vested options.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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