CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY Statement - USD ($) $ in Thousands	Total	Common Class B [Member]	Common Stock [Member]	Series A Preferred Stock [Member]	AOCI Attributable to Parent [Member]	Noncontrolling Interest [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Additional Paid-in Capital [Member]
Common stock		$ 43	$ 593
Common Stock, Shares, Issued		4,339,431	59,308,018
Additional capital	$ 1,039,347
Retained Earnings (Accumulated Deficit)	2,530,429
Treasury Stock, Value	$ (937,157)
ERROR in label resolution.	(21,850,356)
Stockholders' Equity Attributable to Noncontrolling Interest	$ (6,812)
Accumulated Other Comprehensive Income (Loss), Net of Tax	(367,772)
Preferred stock, $.01 par value; 20,000,000 shares authorized, no shares issued or outstanding				$ 0
Preferred stock, shares issued (in shares)				0
Stock Issued, Value, Stock Options Exercised, Net of Tax Benefit (Expense)			$ 1				$ 79
APIC, Share-based Payment Arrangement, Recognition and Exercise	(39)
Shares Granted, Value, Share-based Payment Arrangement, after Forfeiture	4,626
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation			$ 0					$ 761	$ (2,297)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period			(105,620)				2,020
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation			(31,680)
Net Income (Loss) Attributable to Parent	34,407
Net Income (Loss) Attributable to Noncontrolling Interest						$ (232)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax					$ (93,851)
Net Income (Loss) Attributable to Parent	(100)
Net Income (Loss) Attributable to Noncontrolling Interest	(185)
Common stock		$ 43	$ 594
Common Stock, Shares, Issued		4,339,431	59,381,958
Additional capital	1,041,637
Retained Earnings (Accumulated Deficit)	2,565,597
Treasury Stock, Value	$ (937,078)
ERROR in label resolution.	(21,848,336)
Stockholders' Equity Attributable to Noncontrolling Interest	$ (7,044)
Accumulated Other Comprehensive Income (Loss), Net of Tax	(461,623)
Preferred stock, $.01 par value; 20,000,000 shares authorized, no shares issued or outstanding				$ 0
Preferred stock, shares issued (in shares)				0
Stock Issued, Value, Stock Options Exercised, Net of Tax Benefit (Expense)			$ 0				$ (437)
APIC, Share-based Payment Arrangement, Recognition and Exercise	0
Shares Granted, Value, Share-based Payment Arrangement, after Forfeiture	4,901
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation			$ 0					27	(37)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period			(30,665)				(10,858)
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation			(652)
Stock Issued During Period, Value, Purchase of Assets	82			$ 0					886,740
Net Income (Loss) Attributable to Parent	(34,506)
Net Income (Loss) Attributable to Noncontrolling Interest	$ 47					47
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax					42,734
Stock Issued During Period, Shares, Purchase of Assets	8,150,228			21,612
Common stock		$ 43	$ 676
Common Stock, Shares, Issued		4,339,431	67,562,199
Additional capital	$ 1,933,241
Retained Earnings (Accumulated Deficit)	2,529,842
Treasury Stock, Value	$ (937,515)
ERROR in label resolution.	(21,859,194)
Stockholders' Equity Attributable to Noncontrolling Interest	$ (6,997)
Accumulated Other Comprehensive Income (Loss), Net of Tax	(418,889)
Preferred stock, $.01 par value; 20,000,000 shares authorized, no shares issued or outstanding				$ 0
Preferred stock, shares issued (in shares)				21,612
Common stock		$ 43	$ 676
Common Stock, Shares, Issued		4,339,431	67,596,515
Additional capital	1,942,810
Retained Earnings (Accumulated Deficit)	2,601,662
Treasury Stock, Value	$ (938,335)
ERROR in label resolution.	(21,870,961)
Stockholders' Equity Attributable to Noncontrolling Interest	$ (7,333)
Accumulated Other Comprehensive Income (Loss), Net of Tax	(263,134)
Preferred stock, $.01 par value; 20,000,000 shares authorized, no shares issued or outstanding				$ 0
Preferred stock, shares issued (in shares)				21,612
Stock Issued, Value, Stock Options Exercised, Net of Tax Benefit (Expense)			$ 2				$ (1,421)
APIC, Share-based Payment Arrangement, Recognition and Exercise	(38)
Shares Granted, Value, Share-based Payment Arrangement, after Forfeiture	5,954
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation			$ 0					(617)	(2,209)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period			(165,641)				(15,330)
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation			(35,289)
Net Income (Loss) Attributable to Parent	59,178
Dividends, Preferred Stock	(14,352)
Net Income (Loss) Attributable to Noncontrolling Interest						(24)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax					16,841
Net Income (Loss) Attributable to Parent	178,373
Net Income (Loss) Attributable to Noncontrolling Interest	65
Common stock		$ 43	$ 678
Common Stock, Shares, Issued		4,339,431	67,726,867
Additional capital	1,946,517
Retained Earnings (Accumulated Deficit)	2,645,871
Treasury Stock, Value	$ (939,756)
ERROR in label resolution.	(21,886,291)
Stockholders' Equity Attributable to Noncontrolling Interest	$ (7,357)
Accumulated Other Comprehensive Income (Loss), Net of Tax	(246,293)
Preferred stock, $.01 par value; 20,000,000 shares authorized, no shares issued or outstanding				$ 0
Preferred stock, shares issued (in shares)				21,612
Stock Issued, Value, Stock Options Exercised, Net of Tax Benefit (Expense)			$ 2				$ (7,942)
APIC, Share-based Payment Arrangement, Recognition and Exercise	(1)
Shares Granted, Value, Share-based Payment Arrangement, after Forfeiture	7,225
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation			$ 0					$ (49)	$ (88)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period			(194,615)				(74,698)
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation			(1,520)
Net Income (Loss) Attributable to Parent	119,195
Dividends, Preferred Stock				$ (14,352)
Net Income (Loss) Attributable to Noncontrolling Interest	89					$ 89
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax					$ 21,219
Common stock		$ 43	$ 680
Common Stock, Shares, Issued		4,339,431	67,919,962
Additional capital	1,953,653
Retained Earnings (Accumulated Deficit)	2,750,665
Treasury Stock, Value	$ (947,698)
ERROR in label resolution.	(21,960,989)
Stockholders' Equity Attributable to Noncontrolling Interest	$ (7,268)
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ (225,074)
Preferred stock, $.01 par value; 20,000,000 shares authorized, no shares issued or outstanding				$ 0
Preferred stock, shares issued (in shares)				21,612