Fair Value Measurements (Assets And Liabilities Measured At Fair Value On Recurring Basis) (Detail) - USD ($)	Jul. 01, 2017	Dec. 28, 2016	Jul. 02, 2016	Sep. 03, 2014
Fair Value Disclosures [Line Items]
Revolving loan	$ 18,335,000		$ 18,073,000
Term Loan, Amount Outstanding	42,949,000			$ 35,000,000
Interest Rate Swap
Fair Value Disclosures [Line Items]
Foreign currency forward contracts, Financial Liabilities	(103,000)		(498,000)
Interest Rate Swap | Level 1
Fair Value Disclosures [Line Items]
Foreign currency forward contracts, Financial Liabilities	0		0
Interest Rate Swap | Level 2
Fair Value Disclosures [Line Items]
Foreign currency forward contracts, Financial Liabilities	(103,000)		(498,000)
Interest Rate Swap | Level 3
Fair Value Disclosures [Line Items]
Foreign currency forward contracts, Financial Liabilities	0		0
Forward Contracts & swaps
Fair Value Disclosures [Line Items]
Foreign currency forward contracts, Financial Assets	1,010,000		136,000
Foreign currency forward contracts, Financial Liabilities	(5,112,000)		(11,112,000)
Forward Contracts & swaps | Level 1
Fair Value Disclosures [Line Items]
Foreign currency forward contracts, Financial Liabilities	0		0
Forward Contracts & swaps | Level 2
Fair Value Disclosures [Line Items]
Foreign currency forward contracts, Financial Assets	1,010,000		136,000
Foreign currency forward contracts, Financial Liabilities	(5,112,000)		(11,112,000)
Forward Contracts & swaps | Level 3
Fair Value Disclosures [Line Items]
Foreign currency forward contracts, Financial Liabilities	0		$ 0
Equipment Term Loan
Fair Value Disclosures [Line Items]
Term Loan, Amount Outstanding	$ 3,500,000	$ 3,900,000