Discontinued Operations - Results of Discontinued Operations, Consist of Operations in Spain and Argentina (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
(Loss) from discontinued operations, net of taxes	$ (820)	$ (4,532)
(Loss) on sale of discontinued operations before income taxes	(10,707)	559
(Loss) on sale of discontinued operations, net of taxes	(10,707)	559
Spain and Argentina [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenues	10,102	39,341
(Loss) from discontinued operations before income taxes	(820)	(4,532)
Income taxes
(Loss) from discontinued operations, net of taxes	(820)	(4,532)
(Loss) on sale of discontinued operations before income taxes	(10,707)	559
Income taxes
(Loss) on sale of discontinued operations, net of taxes	$ (10,707)	$ 559