Note 4 - Restructuring Activities (Details Textual) $ in Thousands	Mar. 31, 2023 USD ($)
CHINA \| Backlog [Member]
Restructuring and Related Cost, Expected Cost Remaining	$ 5

Amount of expected cost remaining for the specified restructuring cost.

No definition available.

Name:	us-gaap_RestructuringAndRelatedCostExpectedCostRemaining1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant