Note 21 - Restructuring Costs (Details Textual)	3 Months Ended	6 Months Ended	12 Months Ended
	Mar. 31, 2016 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2011 USD ($)
Asset Impairment Charges			$ 8,247,000			$ 1,000,000
Impairment of Real Estate			7,500,000
Number of Real Estate Properties Sold During Period		4
Real Estate Held-for-sale		$ 6,100,000	$ 6,100,000
Operating Segments [Member]
Restructuring and Related Cost, Incurred Cost	$ 9,000,000
Restructuring and Related Cost, Number of Positions Eliminated			100
Operating Segments [Member] | Selling, General and Administrative Expenses [Member]
Asset Impairment Charges			$ 3,200,000
Severance Costs			700,000
Impairment of Real Estate			$ 5,000,000