Debt (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended												6 Months Ended	0 Months Ended	6 Months Ended
	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2013 Working capital line of credit China	Dec. 31, 2012 Working capital line of credit China	Jun. 30, 2013 Revolving credit line	Jun. 30, 2013 Term loan	Dec. 31, 2012 Term loan	Dec. 31, 2012 Capital lease and other obligations	Jun. 30, 2013 Senior secured credit facility - term loan due 2015	Dec. 31, 2012 Senior secured credit facility - term loan due 2015	Jun. 30, 2013 Senior secured credit facility - revolving loan due 2015	Dec. 31, 2012 Senior secured credit facility - revolving loan due 2015	Jun. 30, 2013 Senior secured credit facility - revolving loan due 2018	Sep. 30, 2013 Senior secured credit facility - revolving loan due 2018 Scenario forecast	Jun. 30, 2013 Senior secured credit facility - revolving loan due 2018 Minimum	Jun. 30, 2013 Senior secured credit facility - revolving loan due 2018 Maximum
Debt
Notes payable and current maturities of long-term liabilities	$ 5.0	$ 16.6	$ 5.0	$ 4.8			$ 10.0	$ 1.8
Long-term notes payable	309.0	240.0								75.0		165.0	309.0
Total notes payable and capital lease obligations	314.0	256.6
Maximum borrowing capacity													600
Face value					360.0	82.5			82.5		360.0
Variable rate basis													LIBOR	LIBOR
Spread on variable rate basis (as a percent)													1.50%	1.25%
Reduction in new initial interest rate (as a percent)													0.50%
Pre-tax charge incurred on call premium	$ 1.0
Interest coverage ratio															3.50
Leverage ratio																3.50