Long-Term Debt (Detail) - USD ($)	6 Months Ended
	Dec. 31, 2016	Jul. 02, 2016	Aug. 06, 2015	Sep. 03, 2014
Debt Disclosure [Line Items]
Line of Credit Facility, Amount Outstanding	$ 18,900,000	$ 18,100,000
Letters of Credit Outstanding, Amount	400,000	400,000
Additional availability of line of credit	25,700,000	26,500,000
Debt Instrument, Periodic Payment, Principal	1,250,000
Debt Instrument, Unused Borrowing Capacity, Amount	2,100,000
2017 (1)	2,935,000
2018	5,871,000
2019	5,871,000
2020	31,051,000
2021	871,000
Total debt	46,599,000
Unamortized debt issuance costs	(135,000)
Long-term debt, net of debt issuance costs	$ 46,464,000			$ 35,000,000
Line of Credit | One-Month London Interbank Offered Rate
Debt Disclosure [Line Items]
Variable rate on line of credit facility (percent)	1.50%
Line of Credit | Federal Funds Rate
Debt Disclosure [Line Items]
Variable rate on line of credit facility (percent)	1.50%
Term Loan
Debt Disclosure [Line Items]
Long-term debt, net of debt issuance costs	$ 23,800,000	$ 26,300,000
Equipment Term Loan
Debt Disclosure [Line Items]
Debt Instrument, Periodic Payment, Principal	200,000
Long-term debt, net of debt issuance costs	$ 3,900,000
Wells Fargo Bank
Debt Disclosure [Line Items]
Increase in revolving line of credit			$ 45,000,000.0
Debt Instrument, Basis Spread on Variable Rate, 1.75% | Line of Credit | Fixed Rate
Debt Disclosure [Line Items]
Variable rate on line of credit facility (percent)	1.75%
Debt Instrument, Basis Spread on Variable Rate, 2.00% | Line of Credit | Fixed Rate
Debt Disclosure [Line Items]
Variable rate on line of credit facility (percent)	2.00%
Debt Instrument, Basis Spread on Variable Rate, 2.25% | Line of Credit | Fixed Rate
Debt Disclosure [Line Items]
Variable rate on line of credit facility (percent)	2.25%
Minimum
Debt Disclosure [Line Items]
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate	2.66%	2.45%
Maximum
Debt Disclosure [Line Items]
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate	3.75%	3.50%