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Earnings (Loss) Per Share (Details 3) - 1.375% Convertible senior notes due 2023 - Convertible senior notes - $ / shares shares in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Dilutive shares included in calculation of earnings per share
Initial conversion price of notes (in dollars per share)	$ 18.93	$ 18.93	$ 18.93	$ 18.93
Potential incremental common shares attributable to dilutive effect of conversion of convertible notes	0.6	0.5		0.5
Potential cumulative common shares attributable to dilutive effect of conversion of convertible notes payable			2.6

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

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