Revenue Recognition - Summary of Significant Changes in Contract Liabilities (Deferred Revenue) Balance (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2020	Sep. 30, 2020
Revenue From Contract With Customer [Abstract]
Revenue recognized that was included in the contract liability (deferred revenue) balance on January 1, 2020	$ (931)	$ (7,692)
Increases due to cash received for prepaid gift cards sold or unshipped food, excluding amounts recognized as revenue, reduced by (decreases) due to returns	$ 3,202	$ 9,989

Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130549-203045

Name:	us-gaap_ContractWithCustomerLiabilityRevenueRecognized
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration