Note 23 - Commitments and Contingencies - Contractual Obligations (Details) - Office Rental [Member] $ in Thousands	Dec. 31, 2018 USD ($)
-2019	$ 92
-2020	2
Total	$ 94

Amount of contractual obligation due in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

No definition available.

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