Note 20 - Commitments and Contingencies - Minimum Contractual Purchase Commitments Obligation Payments (Details) $ in Thousands	Dec. 31, 2017 USD ($)
2018	$ 5,418
2019	1,273
Total minimum contractual purchase commitments	$ 6,691

Minimum amount of purchase arrangement maturing in the next fiscal year following the latest fiscal year. Includes, but not limited to, recorded and unrecorded purchase obligations, long-term purchase commitments, and short-term purchase commitments.

No definition available.

Name:	us-gaap_PurchaseObligationDueInNextTwelveMonths
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant