Segments Information (Restated) - Other Interest Expense, Net (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Segments Information
Other interest expense, net	$ 11,012	$ 12,715	$ 30,973	$ 38,040
Operating Segments
Segments Information
Other interest expense, net	1,424	1,486	4,380	4,262
Corporate, Non-Segment
Segments Information
Other interest expense, net	9,588	11,229	26,593	33,778
Consumer services and plans | Operating Segments
Segments Information
Other interest expense, net	1	4	5	12
Retail | Operating Segments
Segments Information
Other interest expense, net	$ 1,423	$ 1,482	$ 4,375	$ 4,250