Note 8 - Revenue (Details) T in Millions	Jun. 30, 2023 T
Contracts with Indexed Based Pricing Mechanisms
REVENUES
Outstanding performance obligation, mass	0.7
Fixed Priced Contracts
REVENUES
Outstanding performance obligation, mass	0.9

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration