Note 23 - Supplemental Financial Information (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended	9 Months Ended	12 Months Ended
	Mar. 31, 2015	Jun. 30, 2015	Sep. 30, 2015	Dec. 31, 2015
Quarterly Financial Information Disclosure [Abstract]
Proceeds from Divestiture of Real Estate Partnership	$ 54,600	$ 54,600	$ 54,600	$ 373,833