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Note 4 - Restructuring of Operations (Details Textual)	6 Months Ended
	Jun. 30, 2022
Restructuring and Related Cost, Expected Number of Positions Eliminated	100

X

- Definition

The expected number of positions to be eliminated as a result of restructuring activities.

+ References

No definition available.

+ Details

Name:	us-gaap_RestructuringAndRelatedCostExpectedNumberOfPositionsEliminated
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration