Segment Information - Capital Expenditures (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Segments Information
Capital expenditures	$ 39,782	$ 41,437	$ 34,984
Consumer services and plans
Segments Information
Capital expenditures	2,951	2,870	2,721
Retail
Segments Information
Capital expenditures	$ 36,831	$ 38,567	$ 32,263