Revenue Recognition Contracts with Customers (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Revenue from gift cards, recognized in period	$ 2,840	$ 3,031
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning balance	29,043	24,522	$ 15,470
Provision for credit losses	106,178	95,094	52,088
Write-off of uncollectible amounts, net of recoveries	(91,235)	(90,573)	(43,036)
Ending balance	43,986	29,043	$ 24,522
Unredeemed Gift Cards
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Deferred Revenue from Gift Cards	$ 2,546	$ 2,190