Discontinued Operations (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		12 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Dec. 31, 2011
Income Statement Balance Sheet and Additional Disclosures by Disposal Groups Including Discontinued Operations [Line Items]
Revenues			$ 39,300
(Loss) from discontinued operations, net of taxes	(820)	(611)
(Loss) on sale of discontinued operations before income taxes	(10,707)
(Loss) on sale of discontinued operations, net of taxes	(10,707)
Spain [Member]
Income Statement Balance Sheet and Additional Disclosures by Disposal Groups Including Discontinued Operations [Line Items]
Revenues	10,102	10,706
(Loss) from discontinued operations before income taxes	(820)	(611)
Income taxes
(Loss) from discontinued operations, net of taxes	(820)	(611)
(Loss) on sale of discontinued operations before income taxes	(10,707)
(Loss) on sale of discontinued operations, net of taxes	$ (10,707)