Income Taxes (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Operating Loss Carryforwards [Line Items]
Effective income tax rates	(50.30%)	(40.60%)	20.90%	(7.90%)
Unrecognized tax benefits	$ 2.2		$ 2.2
United States Tax Authority [Member]
Operating Loss Carryforwards [Line Items]
Net deferred tax asset	$ 3.9		$ 3.9