Earnings Per Share - Computations Of Basic And Diluted EPS (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Basic:
Net income (loss) attributable to common shareholders	$ (11,938)	$ 1,318
Less: Undistributed earnings allocated to participating securities	0	(12)
Accretion of redeemable noncontrolling interests	(2,086)	0
Net income (loss) available to common shareholders, basic	$ (14,024)	$ 1,306
Weighted average number of shares outstanding, basic (in shares)	148,863	147,421
Effect of dilutive securities:
Net income (loss) available to common shareholders, basic	$ (14,024)	$ 1,306
Share-based awards other than participating securities	$ 0	$ 0
Share-based awards other than participating securities (in shares)	0	330
Net income (loss) available to common shareholders, diluted	$ (14,024)	$ 1,306
Weighted average number of shares outstanding, diluted (in shares)	148,863	147,751

Accretion of redeemable noncontrolling interests to redemption value through retained earnings (equity classification).

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Amount of increase (decrease) to net income used for calculating diluted earnings per share (EPS), resulting from the assumed exercise of stock options or restrictive stock units (RSUs).

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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