Share-Based Compensation (Detail) (USD $)	3 Months Ended		0 Months Ended	1 Months Ended			3 Months Ended				1 Months Ended
	Sep. 27, 2014	Sep. 28, 2013	Jul. 25, 2012 Stock Appreciation Rights (SARs) [Member]	Jul. 31, 2013 Stock Appreciation Rights (SARs) [Member]	Jan. 26, 2012 Stock Appreciation Rights (SARs) [Member]	Jul. 27, 2011 Stock Appreciation Rights (SARs) [Member]	Sep. 27, 2014 Stock Appreciation Rights (SARs) [Member]	Sep. 28, 2013 Stock Appreciation Rights (SARs) [Member]	Sep. 27, 2014 Employee Stock Option [Member]	Sep. 28, 2013 Employee Stock Option [Member]	Oct. 31, 2014 October 31, 2014 SAR Grant [Member] Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period			210,666	213,166	32,000	184,666					213,166
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value			$ 7.44	$ 11.34	$ 6.30	$ 4.40					$ 8.22
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value			$ 3.71	$ 4.67	$ 3.08	$ 2.20					$ 3.04
Allocated Share-based Compensation Expense							$ 165,000	$ 154,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized	800,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition	1 year 6 months 26 days
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period								15,000	4,930	7,500
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value		$ 0