Note 10 - Financial Instruments - Swaps Outstanding (Details) - Cross Currency Interest Rate Contract [Member] - USD ($) $ in Thousands	Aug. 27, 2022	Oct. 20, 2017
Derivative, Notional Amount		$ 267,860
Currency Swap 1 [Member]
Interest rate minimum	3.00%
Derivative, Notional Amount	$ 267,860
Fair Value	$ 42,329
Interest rate maximum	5.1803%

Nominal or face amount used to calculate payment on derivative.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI https://asc.fasb.org/extlink&oid=125515794&loc=SL5580258-113959

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI https://asc.fasb.org/extlink&oid=125515794&loc=SL5579245-113959

Name:	us-gaap_DerivativeNotionalAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant