Income Taxes (Tables)

9 Months Ended

Sep. 30, 2011

Income Taxes [Abstract]

Income tax provision from continuing operations

	Three months ended September 30,						Nine months ended September 30,
	2011			2010			2011			2010
Current:
United States - Alternative minimum tax	$	93		$	(3	)	$	2,031		$	(3	)
United States - Foreign withholding		(157	)		(490	)		(648	)		(1,605	)
Argentina		(23	)		(3,505	)		60			(5,646	)
Australia		(1,164	)		(82	)		(1,823	)		(139	)
Mexico		(504	)		(40	)		(644	)		(123	)
Bolivia		(22,741	)		(6,973	)		(47,746	)		(9,863	)
Deferred:
United States		1,364			1,918			(1,041	)		16,404
Australia		306			228			(153	)		(354	)
Mexico		(2,459	)		5,201			(12,521	)		15,564
Bolivia		(2,321	)		513			538			(1,098	)
Income tax benefit (provision) from continuing operations	$	(27,606	)	$	(3,233	)	$	(61,947	)	$	13,137