Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Income (loss) from continuing operations before taxes:
United States operations	$ 49,640	$ 26,162	$ (161)
Foreign operations	90,251	55,850	(5,929)
Income (loss) from continuing operations before taxes	139,891	82,012	(6,090)
Currently payable:
United States federal	586		9,316
United States state and local	2,636	1,135	2,932
Foreign	18,421	17,719	5,881
Income tax expense (benefit)	21,643	18,854	18,129
Deferred:
United States federal	124	(5,882)	(7,308)
United States state and local	(790)	(341)	(558)
Foreign	3,661	83	(9,088)
Deferred Income tax expense (benefit)	2,995	(6,140)	(16,954)
Total income tax expense	$ 24,638	$ 12,714	$ 1,175