Cash, Cash Equivalents and Restricted Cash - Schedule of Cash and Cash Equivalents (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	$ 259,461	$ 383,369
Money market funds
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	30,000	175,000
IHOP advertising funds and gift card programs | IHOP
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	76,200	71,600
Other depository accounts
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	$ 153,300	$ 136,800