CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (Unaudited) - 6 months ended Jun. 30, 2015 - USD ($) shares in Thousands, $ in Thousands	Common Stock	Capital in Excess of Par Value	Retained Earnings	Accumulated Other Comprehensive Loss	Total
Balance at Dec. 31, 2014	$ 21,654		$ 1,074,561	$ (17,833)	$ 1,078,382
Balance (in shares) at Dec. 31, 2014	216,539
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock issued for stock incentive plans, net	$ 82	$ 4,948			5,030
Stock issued for stock incentive plans, net (in shares)	818
Stock purchased and retired	$ (34)	(6,358)	2,299		(4,093)
Stock purchased and retired (in shares)	(339)
Net loss			(26,507)		(26,507)
Pension adjustment, net of taxes				250	250
Foreign currency translation				(876)	(876)
Unrealized loss on securities, net of taxes				(2)	(2)
Dividends declared			(33,599)		(33,599)
Excess tax benefits for share- based payments		$ 1,410			1,410
Balance at Jun. 30, 2015	$ 21,702		$ 1,016,754	$ (18,461)	$ 1,019,995
Balance (in shares) at Jun. 30, 2015	217,018