Note 21 - Share Based Compensation - Unvested Stock Award Activity (Details) - $ / shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Outstanding, beginning of year (in shares)	125,445	2,472,911	2,531,700
Outstanding, weigted-average fair value, beginning of year (in dollars per share)	$ 6.22	$ 5.10	$ 5.21
Granted (in shares)	450,000	0	45,360
Granted, weighted-average fair value (in dollars per share)	$ 6.83		$ 3.74
Vested (in shares)	(118,508)	(2,347,466)	(91,902)
Vested, weighted-average fair value (in dollars per share)	$ 6.67	$ 5.03	$ 7.53
Forfeited (in shares)	(9,213)		(12,247)
Forfeited, weighted-average fair value (in dollars per share)	$ 4.21		$ 5.40
Unvested, end of year (in shares)	447,724	125,445	2,472,911
Unvested, end of year (in dollars per share)	$ 6.76	$ 6.22	$ 5.10