CONSOLIDATED STATEMENTS OF EQUITY (Unaudited) - 6 months ended Jun. 30, 2016 - USD ($) $ in Thousands	Total	Common Stock Par Value [Member]	Capital in Excess of Par Value [Member]	Retained Earnings/(Accumulated Deficit) [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Treasury Stock [Member]	Stockholders' Equity [Member]	Noncontrolling Interest ("NCI") [Member]
Beginning Balance at Dec. 31, 2015	$ 1,546,721	$ 246,841	$ 1,687,059	$ (260,884)	$ (93,955)	$ (92,262)	$ 1,486,799	$ 59,922
Net income	19,361			18,485			18,485	876
Other comprehensive income (loss), net of tax	28,059				28,080		28,080	(21)
Common stock issued		2,206	(2,206)
Stock-based compensation charges	4,891		4,891				4,891
Purchase of treasury shares	(2,572)					(2,572)	(2,572)
Retirement of common stock		(401)	(641)			1,042
Ending Balance at Jun. 30, 2016	$ 1,596,460	$ 248,646	$ 1,689,103	$ (242,399)	$ (65,875)	$ (93,792)	$ 1,535,683	$ 60,777