Segment Information - Financial Information by Segment (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 26, 2015	Dec. 27, 2014	Dec. 26, 2015	Dec. 27, 2014	Jun. 27, 2015
Segment Reporting Information [Line Items]
Revenues	$ 243,060	$ 237,309	$ 480,231	$ 467,551
Income from operations	31,484	28,624	59,362	55,474
Total assets	923,846	908,156	923,846	908,156	$ 928,865
Depreciation and amortization expense	8,786	7,946	17,242	15,837
Operating Segments | United States
Segment Reporting Information [Line Items]
Revenues	209,438	200,400	414,490	394,798
Income from operations	27,266	23,974	51,191	46,780
Total assets	895,841	857,994	895,841	857,994
Depreciation and amortization expense	7,931	7,013	15,536	13,908
Operating Segments | Canada
Segment Reporting Information [Line Items]
Revenues	33,622	36,909	65,741	72,753
Income from operations	4,218	4,650	8,171	8,694
Total assets	125,028	135,777	125,028	135,777
Depreciation and amortization expense	855	933	1,706	1,929
Elimination
Segment Reporting Information [Line Items]
Revenues	0	0	0	0
Income from operations	0	0	0	0
Total assets	(97,023)	(85,615)	(97,023)	(85,615)
Depreciation and amortization expense	$ 0	$ 0	$ 0	$ 0