Income Taxes - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Income Tax Disclosure [Abstract]
Effective income tax rate	0.10%	10.90%	0.60%	52.80%
Uncertain tax position settled			$ 2.1
Uncertain tax position against the statutes of limitation			$ 2.3