Represents the amount of principal paid during the period on sale leaseback liabilities.

No definition available.

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- Definition

Represents the implied interest rate on sale leaseback transactions.

+ References

No definition available.

+ Details

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- Definition

Represents the term of sale leaseback transactions.

+ References

No definition available.

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- Definition

Represents total funded debt to EBITDA allowable ratio.

+ References

No definition available.

+ Details

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Data Type:	xbrli:pureItemType
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- Definition

The average effective interest rate during the reporting period.

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Period Type:	duration

- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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Balance Type:	na
Period Type:	duration

- Definition

Amount of the required periodic payments including both interest and principal payments.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Nominal or face amount used to calculate payment on derivative.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Period Type:	instant

- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

+ Details

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

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Period Type:	instant

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:
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Balance Type:
Period Type:

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Note J - Long-term Debt (Details Textual) $ in Thousands			3 Months Ended		6 Months Ended	9 Months Ended
Note J - Long-term Debt (Details Textual) $ in Thousands	Apr. 22, 2019 USD ($)	Jun. 29, 2018 USD ($)	Mar. 27, 2020 USD ($)	Mar. 27, 2020 USD ($)	Dec. 27, 2019	Mar. 27, 2020 USD ($)	Dec. 25, 2020	Sep. 25, 2020	Jun. 30, 2020	Dec. 26, 2019
Principal Paid on Sale Leaseback Liabilities			$ 54
Cash Flow Hedging [Member] \| Designated as Hedging Instrument [Member] \| Interest Rate Swap [Member] \| Bank of Montreal [Member]
Derivative, Notional Amount	$ 20,000		$ 18,500	$ 18,500		$ 18,500
Maximum [Member]
Sale Leaseback Transactions, Term (Year)						5 years
Sale Leaseback Transactions, Implied Interest Rate			25.00%	25.00%		25.00%
Minimum [Member]
Sale Leaseback Transactions, Term (Year)					3 years	3 years
Sale Leaseback Transactions, Implied Interest Rate			7.00%	7.00%		7.00%
BMO [Member] \| The 2018 Credit Agreement [Member] \| Revolving Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity		$ 50,000
Debt Instrument, Interest Rate During Period				2.62%
Line of Credit Facility, Current Borrowing Capacity			$ 42,427	$ 42,427		$ 42,427
Line of Credit Facility, Remaining Borrowing Capacity			$ 18,317	$ 18,317		$ 18,317
BMO [Member] \| The 2018 Credit Agreement [Member] \| Term Loan [Member]
Debt Instrument, Periodic Payment, Total		$ 500
Debt Instrument, Interest Rate During Period				3.67%
Debt Instrument, Maturity Date	Mar. 04, 2026
BMO [Member] \| The 2018 Credit Agreement Amendment [Member] \| Revolving Credit Facility [Member] \| Maximum [Member]
Debt Instrument, Covenant, Allowable Ratio, Current Quarter			5	5	4	5				3
BMO [Member] \| The 2018 Credit Agreement Amendment [Member] \| Revolving Credit Facility [Member] \| Maximum [Member] \| Forecast [Member]
Debt Instrument, Covenant, Allowable Ratio, Current Quarter							3	3.5	4