Note 23 - Share-based Compensation Expenses - Options Issued and Outstanding (Details) - $ / shares	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Options outstanding, number of underlying shares (in shares)	277,976
Options outstanding, weighted average remaining contractual life (Year)	4 months 28 days	10 months 28 days
Options outstanding, weighted average exercise price (in dollars per share)	$ 3.00
Option exercisable, number of underlying shares (in shares)	277,976
Option exercisable, weighted average remaining contractual life (Year)	4 months 28 days	10 months 28 days
Option exercisable, weighted average exercise price (in dollars per share)	$ 3.00
Options outstanding, granted/vested (in shares)	0
Options outstanding, expired (in shares)	0
Options outstanding, exercised (in shares)	0
Options outstanding, number of underlying shares (in shares)	277,976	277,976
Options outstanding, weighted average exercise price (in dollars per share)	$ 3.00	$ 3.00
Option exercisable, number of underlying shares (in shares)	277,976	277,976
Option exercisable, weighted average exercise price (in dollars per share)	$ 3.00	$ 3.00