Note 14 - Subsequent Events (Details Textual) $ in Millions	Feb. 10, 2019 USD ($)
Subsequent Event [Member] \| Asset Purchase Agreement with Corcentric [Member] \| Discontinued Operations, Held-for-sale [Member]
Disposal Group, Including Discontinued Operation, Consideration	$ 32

Amount of consideration received or receivable for the disposal of assets and liabilities, including discontinued operation.

No definition available.

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