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	18,172		18,172
Reclassification of deferred gain from sale and leaseback transaction to retained earnings	4,560		4,560
Foreign currency translation adjustments	(263)			(263)
Unrealized gain on hedges, net of tax	2,712			2,712
Accretion of redeemable noncontrolling interests	(18)		(18)
Activity in company stock plans, net and other	(979)	$ (979)
Activity in company stock plans, net and other (in shares)		556
Share-based compensation	6,433	$ 6,433
Balance, end of period at Jun. 30, 2019	1,648,396	$ 1,314,163	405,748	(71,515)
Balance, end of period (in shares) at Jun. 30, 2019		148,759
Balance, beginning of period at Mar. 31, 2019	1,629,843	$ 1,310,738	388,912	(69,807)
Balance, beginning of period (in shares) at Mar. 31, 2019		148,785
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss) attributable to common shareholders	16,854		16,854
Foreign currency translation adjustments	(3,065)			(3,065)
Unrealized gain on hedges, net of tax	1,357			1,357
Accretion of redeemable noncontrolling interests	(18)		(18)
Activity in company stock plans, net and other	(320)	$ (320)
Activity in company stock plans, net and other (in shares)		(26)
Share-based compensation	3,745	$ 3,745
Balance, end of period at Jun. 30, 2019	1,648,396	$ 1,314,163	405,748	(71,515)
Balance, end of period (in shares) at Jun. 30, 2019		148,759
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	(6,488)		(6,488)
Expected credit losses recognized in retained earnings upon adoption of ASU 2016-13	(620)		(620)
Foreign currency translation adjustments	(35,483)			(35,483)
Unrealized gain on hedges, net of tax	285			285
Accretion of redeemable noncontrolling interests	(2,155)		(2,155)
Activity in company stock plans, net and other	(4,513)	$ (4,513)
Activity in company stock plans, net and other (in shares)		1,152
Share-based compensation	4,083	$ 4,083
Balance, end of period at Jun. 30, 2020	1,654,700	$ 1,318,531	436,107	(99,938)
Balance, end of period (in shares) at Jun. 30, 2020		150,040
Balance, beginning of period at Mar. 31, 2020	1,649,065	$ 1,316,401	430,726	(98,062)
Balance, beginning of period (in shares) at Mar. 31, 2020		149,962
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss) attributable to common shareholders	5,450		5,450
Foreign currency translation adjustments	(1,896)			(1,896)
Unrealized gain on hedges, net of tax	20			20
Accretion of redeemable noncontrolling interests	(69)		(69)
Activity in company stock plans, net and other	217	$ 217
Activity in company stock plans, net and other (in shares)		78
Share-based compensation	1,913	$ 1,913
Balance, end of period at Jun. 30, 2020	$ 1,654,700	$ 1,318,531	$ 436,107	$ (99,938)
Balance, end of period (in shares) at Jun. 30, 2020		150,040