Earnings Per Share - Narrative (Details) - shares shares in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2020	Dec. 31, 2019	Nov. 19, 2013
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of diluted earnings per share (in shares)	900	390
Weighted average dilutive shares, contingently issuable (in shares)	175	40
Convertible Senior Notes 1.00 percent due December 2020
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Interest rate, as a percentage	1.00%	1.00%	1.00%	1.00%