Consolidated Statements of Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenues:
Rental revenues	$ 28,970	$ 30,127	$ 89,559	$ 91,292
Total revenues	217,405	194,099	682,667	566,733
Cost of revenues:
Franchise expenses	74,577	78,341	233,787	243,157
Company restaurant expenses	30,361	0	93,131	0
Interest expense from finance leases	1,351	1,668	4,325	5,315
Other rental expenses	21,251	21,314	63,841	63,096
Rental expenses	22,602	22,982	68,166	68,411
Financing expenses	145	150	437	449
Total cost of revenues	127,685	101,473	395,521	312,017
Gross profit	89,720	92,626	287,146	254,716
General and administrative expenses	38,922	40,753	121,105	121,423
Interest expense, net	15,238	15,430	45,233	46,110
Amortization of intangible assets	2,925	2,505	8,774	7,513
Closure and impairment charges	157	217	640	119
Loss on extinguishment of debt	0	0	8,276	0
Debt refinancing costs	0	2,532	0	2,532
Loss (gain) on disposition of assets	746	(58)	1,187	(1,535)
Income before income tax provision	31,732	31,247	101,931	78,554
Income tax provision	(7,815)	(7,660)	(24,981)	(25,181)
Net income	23,917	23,587	76,950	53,373
Other comprehensive income (loss) net of tax:
Adjustment to unrealized loss on available-for-sale investments	0	0	0	50
Foreign currency translation adjustment	(1)	0	0	(6)
Total comprehensive income	23,916	23,587	76,950	53,417
Net income available to common stockholders:
Net income	23,917	23,587	76,950	53,373
Less: Net income allocated to unvested participating restricted stock	(795)	(799)	(2,621)	(1,793)
Net income available to common stockholders - basic	$ 23,122	$ 22,788	$ 74,329	$ 51,580
Net income available to common stockholders per share:
Basic (USD per share)	$ 1.38	$ 1.31	$ 4.35	$ 2.94
Diluted (USD per share)	$ 1.36	$ 1.29	$ 4.27	$ 2.90
Weighted average shares outstanding:
Basic (in shares)	16,762	17,439	17,095	17,562
Diluted (in shares)	17,055	17,738	17,432	17,797
Franchise revenues
Revenues:
Revenue from contract with customer, excluding assessed tax	$ 156,200	$ 162,078	$ 487,794	$ 469,332
Royalties, franchise fees and other
Revenues:
Revenue from contract with customer, excluding assessed tax	88,686	91,062	275,912	275,775
Advertising revenue
Revenues:
Revenue from contract with customer, excluding assessed tax	67,514	71,016	211,882	193,557
Company restaurant sales
Revenues:
Revenue from contract with customer, excluding assessed tax	30,548	0	100,034	0
Financing revenues
Revenues:
Revenue from contract with customer, excluding assessed tax	1,687	1,894	5,280	6,109
Advertising fees
Revenues:
Revenue from contract with customer, excluding assessed tax	67,514	71,016	211,882	193,557
Cost of revenues:
Franchise expenses	67,514	71,016	211,882	193,557
Other franchise expenses
Cost of revenues:
Franchise expenses	$ 7,063	$ 7,325	$ 21,905	$ 49,600