Debt (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Debt
Notes payable and current maturities of long-term liabilities	$ 15.4	$ 16.6
Long-term notes payable and capital lease obligations	258.5	240.0
Total notes payable and capital lease obligations	273.9	256.6
Working capital line of credit China
Debt
Notes payable and current maturities of long-term liabilities	5.4	4.8
Term loan
Debt
Notes payable and current maturities of long-term liabilities	10.0	10.0
Capital lease and other obligations
Debt
Notes payable and current maturities of long-term liabilities		1.8
Senior secured credit facility - term loan due 2015
Debt
Long-term notes payable and capital lease obligations	72.5	75.0
Senior secured credit facility - revolving loan due 2015
Debt
Long-term notes payable and capital lease obligations	$ 186.0	$ 165.0