Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Income Tax Disclosure [Abstract]
Income tax expense	$ 6,554	$ 4,751	$ 16,528	$ 7,084
Pre tax income	$ 21,314	$ 11,519	$ 49,404	$ 17,419
Effective income tax rate	30.70%	41.20%	33.50%	40.70%