Note 20 - Share-based Compensation Plans - Stock Options Activity (Details)	12 Months Ended
	Dec. 31, 2018 $ / shares shares
Options outstanding, number of options (in shares) | shares
Options outstanding, weighted average exercise price (in dollars per share) | $ / shares
Granted, number of options (in shares) | shares	192,089
Granted, weighted average exercise price (in dollars per share) | $ / shares	$ 10.81
Exercised, number of options (in shares) | shares
Exercised, weighted average exercise price (in dollars per share) | $ / shares
Expired or canceled, number of options (in shares) | shares
Expired or canceled, weighted average exercise price (in dollars per share) | $ / shares
Forfeited, number of options (in shares) | shares
Forfeited, weighted average exercise price (in dollars per share) | $ / shares
Options outstanding, number of options (in shares) | shares	192,089
Options outstanding, weighted average exercise price (in dollars per share) | $ / shares	$ 10.81
Options outstanding, weighted average remaining contractual term (Year)	9 years 346 days
Options exercisable, number of options (in shares) | shares
Options exercisable, weighted average exercise price (in dollars per share) | $ / shares