SEGMENT INFORMATION GEOGRAPHIC INFORMATION (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended									12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Mar. 31, 2011	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues from external customers	$ 494,407	$ 497,510	$ 593,291	$ 578,387	$ 493,638	$ 404,719	$ 459,233	$ 463,088	$ 1,486,998	$ 2,163,595	$ 1,820,678	$ 1,486,998
Long-lived Assets	680,882				593,285					680,882	593,285	354,583
UNITED STATES
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues from external customers									1,210,531	1,159,061	1,356,264
Long-lived Assets	266,413				262,064					266,413	262,064	248,835
BRAZIL
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues from external customers									262,203	397,426	328,005
Long-lived Assets	101,282				112,480					101,282	112,480	105,489
Other Countries [Domain]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues from external customers									14,264	607,108	136,409
Long-lived Assets	$ 313,187				$ 218,741					$ 313,187	$ 218,741	$ 259