CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (USD $) In Thousands, except Share data, unless otherwise specified	Common stock	Treasury stock	Additional Paid-in capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Non-controlling interest	Total
BALANCE at Dec. 31, 2011	$ 1,573		$ 481,969	$ 322,184	$ (111,754)	$ 3,236	$ 697,208
BALANCE (in shares) at Dec. 31, 2011	157,320,070
Increase (Decrease) in Stockholders' Equity
Stock-based compensation from option awards			5,349				5,349
Stock options exercised	9		4,607				4,616
Stock options exercised (in shares)	840,649						840,649
Foreign Currency Translation Adjustment					43,567	49	43,616
Net income				93,063		6,753	99,816
Dividends declared				(82,244)		(5,435)	(87,679)
BALANCE at Dec. 31, 2012	1,582		491,925	333,003	(68,187)	4,603	762,926
BALANCE (in shares) at Dec. 31, 2012	158,160,719
Increase (Decrease) in Stockholders' Equity
Stock-based compensation from option awards			1,743				1,743
Stock options exercised	0		454				454
Stock options exercised (in shares)	50,000						50,000
Repurchase of common stock		(29,727)					(29,727)
Repurchase of common stock (in shares)		(2,500,000)					(2,500,000)
Foreign Currency Translation Adjustment					(56,152)	(106)	(56,258)
Net income				152,340		7,821	160,161
Dividends declared				(98,768)		(6,415)	(105,183)
BALANCE at Dec. 31, 2013	1,582	(29,727)	494,122	386,575	(124,339)	5,903	734,116
BALANCE (in shares) at Dec. 31, 2013	158,210,719	(2,500,000)
Increase (Decrease) in Stockholders' Equity
Common stock issued from treasury stock upon RSU exercise		612	2,783				3,395
Common stock issued from treasury stock upon RSU exercise (in shares)		51,447
Foreign Currency Translation Adjustment					(320,252)	(1,338)	(321,590)
Non-controlling interest						2,716	2,716
Net income				108,092		5,284	113,376
Dividends declared				(109,024)		(5,547)	(114,571)
BALANCE at Dec. 31, 2014	$ 1,582	$ (29,115)	$ 496,905	$ 385,643	$ (444,591)	$ 7,018	$ 417,442
BALANCE (in shares) at Dec. 31, 2014	158,210,719	(2,448,553)