Consolidated Statements of Equity Consolidated Statements of Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid- In Capital	Retained Earnings	AOCI Attributable to Parent [Member]	Non Controlling Interest
Beginning balance (in shares) at Dec. 31, 2018		60,900
Beginning balance at Dec. 31, 2018	$ 867,000	$ 600	$ 808,000	$ 121,100	$ (63,000)	$ 300
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Employee stock compensation (in shares)		200
Employee stock compensation	12,100		12,100
Deferred compensation	(1,800)		(1,500)	(300)
Proceeds from stock issuances under employee plans (in shares)		0
Proceeds from stock issuances under employee plans	3,200	$ 0	3,200
Cash dividends declared	(37,100)			(37,100)
Repurchase and retirement of common shares (in shares)		(100)
Repurchase and retirement of common shares	(6,200)	$ 0	(1,000)	(5,200)
Other activity	0			600	(600)
Net income	48,400			48,400
Other comprehensive loss	(6,100)				(6,100)
Ending balance (in shares) at Mar. 31, 2019		61,000
Ending balance at Mar. 31, 2019	879,500	$ 600	820,800	127,500	(69,700)	300
Beginning balance (in shares) at Dec. 31, 2019		61,400
Beginning balance at Dec. 31, 2019	1,108,200	$ 600	892,800	287,300	(72,700)	200
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Employee stock compensation (in shares)		400
Employee stock compensation	11,900	$ 0	11,900
Deferred compensation	6,900		(500)	7,400
Proceeds from stock issuances under employee plans (in shares)		0
Proceeds from stock issuances under employee plans	2,300		2,300
Cash dividends declared	$ (38,000)			(38,000)
Repurchase and retirement of common shares (in shares)	(600)	(600)
Repurchase and retirement of common shares	$ (48,800)	$ 0	(8,100)	(40,700)
Net income	(5,400)			(5,400)		0
Other comprehensive loss	(35,300)				(35,300)
Ending balance (in shares) at Mar. 31, 2020		61,200
Ending balance at Mar. 31, 2020	$ 1,001,800	$ 600	$ 898,400	$ 210,600	$ (108,000)	$ 200