Income Taxes (Details 1) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011		Dec. 31, 2010		Dec. 31, 2009
Income from continuing operations before income taxes and income (loss) from affiliates and joint ventures
Domestic	$ 53,803	[1]	$ 43,590	[1]	$ 16,272	[1]
Foreign	21,446	[1]	17,079	[1]	20,763	[1]
Income before income taxes and income (loss) from affiliates and joint ventures	$ 75,249	[1]	$ 60,669	[1]	$ 37,035	[1]

[1] Restated