Income Taxes (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014
Tax Credit Carryforward [Line Items]
Undistributed foreign earnings	$ 0.8
Income tax expense, if undistributed foreign earnings are distributed	0.3
Impact to tax expense if unrecognized tax benefit is realized	7.3
Research Tax Credit Carryforward [Member] | State and Local Jurisdiction [Member]
Tax Credit Carryforward [Line Items]
Tax Credit Carryforward, Amount	$ 7.9