Summary of Significant Accounting Policies (Details) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended		1 Months Ended
	Dec. 31, 2014 Customer	Dec. 31, 2013	Dec. 31, 2014
Line of Credit Facility [Line Items]
Percentage of revenue from long-term contracts	8.00%		8.00%
Sale of accounts receivable	$ 95.0	$ 75.4
Income (expense) related to discount on sale of accounts receivable	(0.5)	(0.4)
Number of customers with uncollateralized accounts receivable in automotive industry	6
Uncollateralized accounts receivable	37.7		37.7
Percentage of accounts receivable uncollateralized	18.00%
Revenue from sales to major customers	252.6
Percentage of revenue from sales to major customers	18.00%		18.00%
1998 Long-Term Incentive Plan
Line of Credit Facility [Line Items]
Number of shares that may be awarded	3,700,000		3,700,000
Maximum number of shares to be awarded to any individual participant in any one calendar year (no more than)	500,000		500,000
1998 Long-Term Incentive Plan | Stock Options
Line of Credit Facility [Line Items]
Options maximum expiration period (more than)	10 years
Building | Minimum
Line of Credit Facility [Line Items]
Property, plant and equipment, useful life	5 years
Building | Maximum
Line of Credit Facility [Line Items]
Property, plant and equipment, useful life	50 years
Machinery and Equipment | Minimum
Line of Credit Facility [Line Items]
Property, plant and equipment, useful life	1 year
Machinery and Equipment | Maximum
Line of Credit Facility [Line Items]
Property, plant and equipment, useful life	20 years
Purchase of Real Estate | Chief Executive Officer
Line of Credit Facility [Line Items]
Purchase of real estate from related party			$ 1.8