Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Revenue Disclosures - Disaggregation of Franchise Revenue by Major Type (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Franchise revenues
Disaggregation of Revenue [Line Items]
Total franchise revenue	$ 162,668	$ 151,941	$ 331,594	$ 307,254
Royalties
Disaggregation of Revenue [Line Items]
Total franchise revenue	75,747	78,102	154,382	153,199
Advertising fees
Disaggregation of Revenue [Line Items]
Total franchise revenue	71,738	58,705	144,368	122,541
Pancake and waffle dry mix sales and other
Disaggregation of Revenue [Line Items]
Total franchise revenue	12,526	12,172	26,957	25,269
Franchise and development fees
Disaggregation of Revenue [Line Items]
Total franchise revenue	$ 2,657	$ 2,962	$ 5,887	$ 6,245