Goodwill and Intangible Assets - Change in Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Goodwill
Balance	$ 112,940	$ 61,053
Acquisitions	40,165	51,887
Balance	153,105	112,940
Consumer services and plans
Goodwill
Balance	49,944	49,944
Acquisitions
Balance	49,944	49,944
Retail
Goodwill
Balance	62,996	11,109
Acquisitions	40,165	51,887
Balance	$ 103,161	$ 62,996