Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

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Debt instrument London interbank offered rate.

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- Definition

The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (c)
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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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No definition available.

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
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Contractual interest rate for funds borrowed, under the debt agreement.

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- Definition

The portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments representing (a) the amount of the hedge ineffectiveness and (b) the amount, if any, excluded from the assessment of hedge effectiveness.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-SubTopic 10
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-Paragraph 4C
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- Definition

Period remaining until the derivative contract matures, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Amount before tax of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Financial Instruments - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 29, 2017	Dec. 30, 2016	Sep. 30, 2015
Maximum [Member]
Financial Instruments [Line Items]
Effective portion of cash flow hedge before tax effect	$ 1,300,000
Cash flow hedge, expected to be reclassified from AOCI into earnings	700,000
Term Loan Credit Facility [Member]
Financial Instruments [Line Items]
Outstanding amounts	$ 9,900,000
Interest Rate Swap [Member] \| Term Loan Credit Facility [Member]
Financial Instruments [Line Items]
Derivative instrument, notional amount			$ 20,000,000
East West and City National Bank [Member] \| Interest Rate Swap [Member]
Financial Instruments [Line Items]
Derivative instrument, notional amount			$ 20,000,000
Credit Agreement [Member] \| Term Loan Credit Facility [Member]
Financial Instruments [Line Items]
Debt instrument interest rate	2.00%
Outstanding amounts	$ 9,900,000
Credit Agreement [Member] \| Interest Rate Swap [Member] \| Term Loan Credit Facility [Member]
Financial Instruments [Line Items]
Derivative instrument, notional amount	$ 7,800,000
Debt instrument LIBOR rate			0.99%
Debt instrument interest rate	2.99%
Credit Agreement [Member] \| London Interbank Offered Rate (LIBOR) [Member] \| Term Loan Credit Facility [Member]
Financial Instruments [Line Items]
Debt instrument variable interest rate	1.57%
Credit Agreement [Member] \| London Interbank Offered Rate (LIBOR) [Member] \| Interest Rate Swap [Member] \| Term Loan Credit Facility [Member]
Financial Instruments [Line Items]
Debt instrument variable interest rate	1.57%
Derivatives in Cash Flow Hedging Relationship [Member]
Financial Instruments [Line Items]
Gains (losses) recognized in income on derivatives that are excluded from effectiveness testing and ineffective portion	$ 0	$ 0
Derivatives in Cash Flow Hedging Relationship [Member] \| Foreign Currency Forward Contracts [Member]
Financial Instruments [Line Items]
Derivative instrument, notional amount	$ 14,200,000
Derivatives in Cash Flow Hedging Relationship [Member] \| Maximum [Member] \| Foreign Currency Forward Contracts [Member]
Financial Instruments [Line Items]
Contracts maturities	36 months
Derivatives in Cash Flow Hedging Relationship [Member] \| East West and City National Bank [Member] \| Term Loan Credit Facility [Member]
Financial Instruments [Line Items]
Debt instrument interest rate	2.99%
Outstanding amounts	$ 9,900,000
Derivatives in Cash Flow Hedging Relationship [Member] \| East West and City National Bank [Member] \| Interest Rate Swap [Member] \| Term Loan Credit Facility [Member]
Financial Instruments [Line Items]
Derivative instrument, notional amount	$ 7,800,000