Note 8 - Commitments and Contingencies (Details Textual) $ in Millions	Sep. 30, 2021 USD ($)
Purchase Obligation, Total	$ 18.2
Lessee, Operating Lease, Lease Not yet Commenced	$ 14.9

Minimum amount of purchase arrangement in which the entity has agreed to expend funds to procure goods or services from a supplier.

No definition available.