v3.20.1

Share-based Compensation - Summary of Assumptions Used in the Valuation Model (Details) - Options	9 Months Ended	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2019	Dec. 31, 2018
Assumptions used in the valuation model
Expected dividend yield	8.70%	0.00%	0.00%
Expected volatility	60.00%		57.00%
Expected term	6 years 29 days	6 years 29 days
Risk-free interest rate	1.96%
Minimum
Assumptions used in the valuation model
Expected volatility		54.00%
Expected term			5 years 1 month 9 days
Risk-free interest rate		2.45%	3.05%
Maximum
Assumptions used in the valuation model
Expected volatility		55.00%
Expected term			6 years 1 month 9 days
Risk-free interest rate		2.53%	3.10%

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- References

No definition available.

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- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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The risk-free interest rate assumption that is used in valuing an option on its own shares.

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- Definition

Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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