Note 25 - Share-based Compensation Expenses - Options Issued and Outstanding (Details) - $ / shares	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Options outstanding, number of underlying shares (in shares)	835,216
Options outstanding, weighted average remaining contractual life (Year)	3 years 105 days	4 years 14 days
Options outstanding, weighted average exercise price (in dollars per share)	$ 2.49
Option exercisable, number of underlying shares (in shares)	676,136
Option exercisable, weighted average remaining contractual life (Year)	3 years 105 days	4 years 40 days
Option exercisable, weighted average exercise price (in dollars per share)	$ 2.59
Options outstanding, granted/vested shares (in shares)	0
Options outstanding, granted/vested, weighted average exercise price (in dollars per share)	$ 0
Option exercisable, granted/vested shares (in shares)	159,080
Option exercisable, granted/vested, weighted average remaining contractual life (Year)	2 years 346 days
Option exercisable, granted/vested, weighted average exercise price (in dollars per share)	$ 2.10
Options outstanding, forfeited (in shares)	0
Options outstanding, forfeited, weighted average exercise price (in dollars per share)	$ 0
Options outstanding, exercised (in shares)	0
Options outstanding, exercised, weighted average exercise price (in dollars per share)	$ 0
Options outstanding, number of underlying shares (in shares)	835,216	835,216
Options outstanding, weighted average exercise price (in dollars per share)	$ 2.49	$ 2.49
Option exercisable, number of underlying shares (in shares)	835,216	676,136
Option exercisable, weighted average exercise price (in dollars per share)	$ 2.49	$ 2.59