Income Taxes - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Income Tax Disclosure [Abstract]
Effective Income Tax Rate Reconciliation, Percent			20.00%	29.40%
Income tax expense	$ (978)	$ 1,842	$ 3,149	$ 7,253