Note 6 - Borrowings (Details Textual) $ in Thousands			12 Months Ended
	Oct. 26, 2022 USD ($)	Dec. 14, 2020 USD ($)	Dec. 31, 2022 USD ($)	Jul. 18, 2022 USD ($)	Jan. 21, 2022 USD ($)	Dec. 25, 2021 USD ($)	Jul. 07, 2021 USD ($)	Jan. 21, 2019 USD ($)
Stock Repurchase Program, Authorized Amount		$ 15,000
Term Loan [Member]
Debt Instrument, Face Amount						$ 50,000	$ 50,000
Debt Instrument, Periodic Payment, Principal			$ 595
Restated Credit Agreement [Member]
Debt to EBITDA Ratio	3.25	1.75
Debt Instrument, Total Consideration Used for Acquisitions		$ 30,000
Debt to Ebitda Ratio for Next Fiscal Year	3.0
EBITDA Add-backs for Disposition Expenses	$ 2,000
EBITDA Add-backs for Unusual or Non Recurring Expenses	2,000
Restated Credit Agreement [Member] | Letter of Credit [Member]
Line of Credit Facility, Maximum Borrowing Capacity								$ 5,000
Restated Credit Agreement [Member] | Revolving Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 90,000	$ 75,000		$ 75,000	$ 65,000		75,000	$ 50,000
Debt Instrument, Interest Rate, Increase (Decrease)		0.25%
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage, Increase (Decrease)		0.05%
Line of Credit Facility, Maximum Borrowing Capacity Under Accordion Feature			$ 90,000
Restated Credit Agreement [Member] | Swingline [Member]
Line of Credit Facility, Maximum Borrowing Capacity					$ 7,500
Amended and Restated Credit Agreement [Member] | Revolving Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity							$ 50,000