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Note 23 - Share-based Compensation Expenses (Details Textual) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	1 Months Ended				12 Months Ended
	May 31, 2021	Aug. 31, 2020	Mar. 31, 2020	Feb. 28, 2020	Dec. 31, 2021	Dec. 31, 2020
Share-based Payment Arrangement, Expense					$ 7,028	$ 2,152
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total					40
Restricted Stock [Member] \| Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)			430
Share-based Payment Arrangement, Expense					240	200
Share Price (in dollars per share)			$ 1.11
Management Consulting and Advisor Service Term (Year)			2 years
Issuance of Stock and Warrants for Services or Claims			$ 480
Restricted Stock [Member] \| Consulting and Advisory Service Providers [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)		50
Share-based Payment Arrangement, Expense		$ 70			40	$ 30
Share Price (in dollars per share)		$ 1.36
Technical Consulting and Advisory Services Term (Year)		1 year
The 2020 Omnibus Securities and Incentive Plan, Second Issuance [Member] \| Restricted Stock [Member] \| Independent Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)	3,990
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)	$ 1.67
Share-based Payment Arrangement, Expense					$ 6,660
The 2020 Omnibus Securities and Incentive Plan [Member] \| Restricted Stock [Member] \| Independent Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)					30	30
Share-based Payment Arrangement, Expense					$ 90	$ 30
Shares Issued, Price Per Share (in dollars per share)					$ 3.13	$ 1.11
The 2015 Omnibus Securities and Incentive Plan [Member] \| Restricted Stock [Member] \| Management and Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)				1,600
Share-based Payment Arrangement, Expense						$ 1,890
Share Price (in dollars per share)				$ 1.18