Note 19 - Equity Incentive Plans (Details) - Tax Short-fall from Share-based Payment Arrangements - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Tax Short-fall from Share-based Payment Arrangements [Abstract]
Short-fall of tax deductions in excess of grant-date fair value	$ (5,348)	$ (1,285)	$ (2,509)
Benefit of tax deductions on grant-date fair value	6,485	1,292	4,172
Total benefit of tax deductions	$ 1,137	$ 7	$ 1,663