Note 19 - Equity Incentive Plans - Stock Options (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Balance (in shares)	35,880	82,670	1,031,170
Balance (in dollars per share)	$ 23.37	$ 23.37	$ 31.27
Balance (Year)	0 years	36 days	1 year 36 days	328 days
Balance		$ 675	$ 1,211	$ 3,268
Exercised (in shares)	(35,880)	(46,790)	(327,830)
Exercised (in dollars per share)	$ 23.37	$ 23.37	$ 23.37
Forfeited (in shares)			(620,670)
Forfeited (in dollars per share)			$ 36.50
Balance (in shares)		35,880	82,670	1,031,170
Balance (in dollars per share)		$ 23.37	$ 23.37	$ 31.27