Borrowings - Additional Information (Detail) - USD ($)			6 Months Ended
		Jan. 31, 2016	Dec. 25, 2015	Jun. 26, 2015
Line of Credit Facility [Line Items]
Line of credit facility borrowing capacity			$ 200,000,000
Line of credit facility amounts outstanding			48,000,000	$ 30,000,000
Undrawn available credit facilities			152,000,000
Cash, cash equivalents and marketable securities at financial institutions located in the United States			40,000,000
Deposits or securities			10,000,000
Minimum net worth required for credit agreement			$ 200,000,000
Percentage of quarterly net income required for credit agreement			50.00%
Minimum debt service coverage ratio			150.00%
Maximum senior leverage ratio			250.00%
Minimum quick ratio required for credit agreement			110.00%
Bank borrowing No. 1 | Subsidiary
Line of Credit Facility [Line Items]
Carrying amount of assets secured and pledged as collateral			$ 48,800,000	$ 50,000,000
Subsequent Event
Line of Credit Facility [Line Items]
Term		2016-02
LIBOR
Line of Credit Facility [Line Items]
Credit line interest rate			LIBOR rate plus a spread of 1.75% to 2.50%
LIBOR | Minimum
Line of Credit Facility [Line Items]
Credit line interest rate, percentage			1.75%
LIBOR | Maximum
Line of Credit Facility [Line Items]
Credit line interest rate, percentage			2.50%
Base Rate
Line of Credit Facility [Line Items]
Credit line interest rate			Base rate plus a spread of 0.75% to 1.50%, determined in accordance with the Facility Agreement
Base Rate | Minimum
Line of Credit Facility [Line Items]
Credit line interest rate, percentage			0.75%
Base Rate | Maximum
Line of Credit Facility [Line Items]
Credit line interest rate, percentage			1.50%
Revolving Credit Facility
Line of Credit Facility [Line Items]
Line of credit facility borrowing capacity			$ 150,000,000
Line of credit facility increase in borrowing capacity			$ 100,000,000
Line of credit expiration date			May 22, 2019
Term	[1]		2016-01
Revolving Credit Facility | Minimum
Line of Credit Facility [Line Items]
Repayment duration			1 month
Revolving Credit Facility | Maximum
Line of Credit Facility [Line Items]
Repayment duration			6 months
Revolving Credit Facility | LIBOR
Line of Credit Facility [Line Items]
Credit line interest rate, percentage			1.75%
Term Loan Credit Facility
Line of Credit Facility [Line Items]
Line of credit facility borrowing capacity			$ 50,000,000
Line of credit expiration date			May 22, 2019

[1] In January 2016, the maturity date of these revolving borrowings were extended to mature in February 2016.