Note 8 - Debt - Summary of Current and Long-term Debt (Details) - USD ($) $ in Thousands		Dec. 30, 2018	Sep. 30, 2018	Jul. 01, 2018
Deferred financing costs			$ (2,155)	$ (2,608)
Debt instrument, carrying amount			98,470	102,330
Less: current debt			11,500	10,063
Long-term debt		$ 86,970	86,970	92,267
Line of Credit [Member]
Revolver	[1]
Term Loan [Member]
Term Loan	[1]		$ 100,625	$ 104,938

[1] On December 23, 2016, the Company entered into an Amended and Restated Credit Agreement (the "2016 Amended Credit Agreement") with JPMorgan Chase Bank, N.A. as administrative agent, and a group of lenders. The 2016 Amended Credit Agreement amended and restated the Company's credit agreement dated September 30, 2014 to, among other things, extend the maturity date of the $115.0 million outstanding term loan ("Term Loan") and the revolving credit facility (the "Revolver") by approximately two years to December 23, 2021. The Term Loan is payable in 19 quarterly installments of principal and interest beginning on April 2, 2017, with escalating principal payments, at the rate of 5% in year one, 7.5% in year two, 10% in year three, 12.5% in year four, and 15% in year five, with the remaining balance of $61.8 million due upon maturity. The Revolver, in the aggregate amount of $200 million, subject to seasonal reduction to an aggregate amount of $100 million for the period from January 1 through August 1, may be used for working capital and general corporate purposes, subject to certain restrictions.