Income Tax Reconciliation (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Income (loss) before income taxes
United States			$ (8,488)	$ (7,942)
Foreign			256,602	147,618
INCOME BEFORE INCOME TAXES	78,642	76,013	248,114	139,676
Income Tax Expense (Benefit), Continuing Operations, Income Tax Reconciliation [Abstract]
Effective income tax rate			35.00%	35.00%
Income tax expense expected			86,840	48,887
Foreign currency translation adjustments			(7,649)	8,025
Impact of foreign taxes			1,908	2,716
Stock-based compensation			1,943	3,277
Increase in valuation allowance			22,700	9,304
Branch and other foreign loss pick-up			(2,013)	(4,358)
Non-deductible third party royalty in Colombia			8,812	9,951
Other permanent differences			(3,180)	4,478
Total income tax expense	45,585	31,408	109,361	82,280
Current income tax expense
United States			813	778
Foreign			132,339	90,357
Total Current income tax expense			133,152	91,135
Deferred income tax recovery
United States			0	0
Foreign			(23,791)	(8,855)
Total Deferred income tax expense (recovery)			$ (23,791)	$ (8,855)