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Earnings (Loss) Per Share (Details 3) - 1.375% Convertible senior notes due 2023 - Convertible senior notes shares in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2021 $ / shares shares	Jun. 30, 2021 $ / shares shares
Dilutive shares included in calculation of earnings per share
Initial conversion price of notes (in dollars per share) | $ / shares	$ 18.93	$ 18.93
Dilutive shares included in calculation of earnings per share	0.5	0.5
Potential cumulative common shares attributable to dilutive effect of conversion of convertible notes payable	9.1	9.1

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The price per share of the conversion feature embedded in the debt instrument.

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