Related-Party Transactions - Additional Information (Detail) - USD ($) $ in Millions		9 Months Ended	12 Months Ended
	Dec. 26, 2015	Sep. 26, 2015	Dec. 27, 2014
Related Party Transaction [Line Items]
Operating lease expiration date		Dec. 31, 2017
Total annual rental payments to the partnership under the lease arrangement			$ 1.5
Scenario, Forecast [Member]
Related Party Transaction [Line Items]
Total annual rental payments to the partnership under the lease arrangement	$ 1.5