Income Taxes (Details Textual) - 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	$ 2,203	$ 3,877	$ 7,523	$ 12,351
Effective income tax rate excluding discrete items			37.50%	38.60%