Common Equity and Earnings per Share (Tables)

9 Months Ended

Sep. 30, 2021

Earnings Per Share [Abstract]

Schedule of Weighted Average of Potential Class A Common Stock Excluded from Computation of Earnings Per Share

For the three and nine months ended September 30, 2021 and 2020, the following weighted average shares of potential class A common stock were excluded from the diluted loss per share calculation because their impact would have been anti-dilutive (in thousands):

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2021		2020		2021		2020
Stock Options		1,252		1,476		1,246		1,536
Restricted Stock Units		103		0		91		0
Employee Stock Purchase Plan		2		0		1		0
2025 Convertible Notes		1,633		0		1,633		0
2027 Convertible Notes		733		0		601		0
Total		3,723		1,476		3,572		1,536