Common Stock - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands				3 Months Ended		9 Months Ended
	Sep. 17, 2021	Apr. 08, 2021	Oct. 05, 2020	Sep. 30, 2021	Jun. 30, 2021	Sep. 30, 2021	Sep. 30, 2020
Subsequent Event [Line Items]
Payments for common stock issuance costs				$ 2,500	$ 4,300	$ 6,827	$ 0
Warrant, exercise price (in dollars per share)				$ 75.90		$ 75.90
Issuance of common stock upon the exercise of stock options (in shares)						76,000
Proceeds from exercise of stock options						$ 819	$ 436
Punchh Inc.
Subsequent Event [Line Items]
Equity interest issued (in shares)		1,493,130
Warrant
Subsequent Event [Line Items]
Derivative, fair value		$ 14,300
Private Placement
Subsequent Event [Line Items]
Number of shares issued in transaction (in shares)		2,352,942
Sale of stock, consideration received on transaction		$ 160,000
Payments for common stock issuance costs		$ 4,300
Private Placement | PAR Act III, LLC
Subsequent Event [Line Items]
Number of shares issued in transaction (in shares)		73,530
Sale of stock (in dollars per share)		$ 68.00
Consideration received per transaction		$ 5,000
Private Placement | T. Rowe Price Associates, Inc.
Subsequent Event [Line Items]
Number of shares issued in transaction (in shares)		2,279,412
Sale of stock (in dollars per share)		$ 68.00
Consideration received per transaction		$ 155,000
Public Offering
Subsequent Event [Line Items]
Number of shares issued in transaction (in shares)	982,143		3,616,022
Sale of stock (in dollars per share)	$ 56.00		$ 38.00
Sale of stock, consideration received on transaction	$ 52,500		$ 131,400
Over-Allotment Option
Subsequent Event [Line Items]
Sale of stock (in dollars per share)			$ 38.00