Consolidated Statements of Income (unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Income Statement [Abstract]
Revenue	$ 644,838	$ 668,905
Cost of sales, including warehousing, distribution and occupancy	431,867	433,060
Gross profit	212,971	235,845
Selling, general, and administrative	160,581	143,072
Gains on refranchising	(154)	(1,015)
Other income, net	(1,009)	(277)
Operating income	53,553	94,065
Interest expense, net (Note 4)	(15,894)	(14,443)
Income before income taxes	37,659	79,622
Income tax expense (Note 9)	13,809	28,807
Net income	$ 23,850	$ 50,815
Earnings per share (Note 7):
Basic (in dollars per share)	$ 0.35	$ 0.70
Diluted (in dollars per share)	$ 0.35	$ 0.69
Weighted average common shares outstanding (Note 7):
Basic (in shares)	68,246	73,078
Diluted (in shares)	68,300	73,373
Dividends declared per share: (in dollars per share)	$ 0	$ 0.20