Consolidated Statements of Income (unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Income Statement [Abstract]
Revenue	$ 640,994	$ 673,218	$ 1,285,832	$ 1,342,123
Cost of sales, including warehousing, distribution and occupancy	428,271	434,520	860,138	867,580
Gross profit	212,723	238,698	425,694	474,543
Selling, general, and administrative	154,033	138,984	314,614	282,056
Gains on refranchising	0	(16,885)	(154)	(17,900)
Long-lived asset impairments (Note 4)	19,356		19,356	0
Other (income) loss, net	(486)	375	(1,495)	98
Operating income	39,820	116,224	93,373	210,289
Interest expense, net (Note 5)	16,067	15,275	31,961	29,718
Income before income taxes	23,753	100,949	61,412	180,571
Income tax expense (Note 10)	8,092	36,921	21,901	65,728
Net income	$ 15,661	$ 64,028	$ 39,511	$ 114,843
Earnings per share (Note 8):
Basic (in dollars per share)	$ 0.23	$ 0.94	$ 0.58	$ 1.63
Diluted (in dollars per share)	$ 0.23	$ 0.94	$ 0.58	$ 1.62
Weighted average common shares outstanding (Note 8):
Basic (in shares)	68,287	68,176	68,267	70,627
Diluted (in shares)	68,362	68,303	68,331	70,760
Dividends declared per share: (in dollars per share)	$ 0	$ 0.20	$ 0	$ 0.40