Income Taxes - Narratives (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2015	Jun. 30, 2014
Income Tax Examination [Line Items]
Effective Income Tax Rate, Continuing Operations		32.00%	33.00%
Effective Income Tax Rate Reconciliation, Tax Contingencies		1.00%
Effective Income Tax Rate Reconciliation, Tax Credit, Other, Amount		1.00%
Income Tax Examination, Likelihood of Unfavorable Settlement	P12M
Income Taxes Paid		$ 3,175	$ 18,010
Canada [Member]
Income Tax Examination [Line Items]
Income Tax Examination, Liability (Refund) Adjustment from Settlement with Taxing Authority	$ 3,500	$ 3,500