Condensed Consolidated Statements Of Shareholders' Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Balance, beginning of period at Dec. 31, 2018	$ 1,617,779	$ 1,308,709	$ 383,034	$ (73,964)
Balance, beginning of period (in shares) at Dec. 31, 2018		148,203
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss) attributable to common shareholders	1,318		1,318
Reclassification of deferred gain from sale and leaseback transaction to retained earnings	4,560		4,560
Foreign currency translation adjustments	2,802			2,802
Unrealized gain on hedges, net of tax	1,355			1,355
Accretion of redeemable noncontrolling interests	0
Activity in company stock plans, net and other	(659)	$ (659)
Activity in company stock plans, net and other (in shares)		582
Share-based compensation	2,688	$ 2,688
Balance, end of period at Mar. 31, 2019	1,629,843	$ 1,310,738	388,912	(69,807)
Balance, end of period (in shares) at Mar. 31, 2019		148,785
Balance, beginning of period at Dec. 31, 2019	1,699,591	$ 1,318,961	445,370	(64,740)
Balance, beginning of period (in shares) at Dec. 31, 2019		148,888
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss) attributable to common shareholders	(11,938)		(11,938)
Expected credit losses recognized in retained earnings upon adoption of ASU 2016-13	(620)		(620)
Foreign currency translation adjustments	(33,587)			(33,587)
Unrealized gain on hedges, net of tax	265			265
Accretion of redeemable noncontrolling interests	(2,086)		(2,086)
Activity in company stock plans, net and other	(4,730)	$ (4,730)
Activity in company stock plans, net and other (in shares)		1,074
Share-based compensation	2,170	$ 2,170
Balance, end of period at Mar. 31, 2020	$ 1,649,065	$ 1,316,401	$ 430,726	$ (98,062)
Balance, end of period (in shares) at Mar. 31, 2020		149,962