Revenue Recognition Contracts with Customers (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Revenue from gift cards, recognized in period	$ 3,031	$ 1,854
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning balance	24,522	15,470	$ 9,341
Provision for credit losses	95,094	52,088	37,521
Write-off of uncollectible amounts, net of recoveries	(90,573)	(43,036)	(31,392)
Ending balance	29,043	24,522	$ 15,470
Unredeemed Gift Cards
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Deferred Revenue from Gift Cards	$ 2,190	$ 1,096