Note 10 - Restructuring Costs (Details Textual)	3 Months Ended	9 Months Ended		12 Months Ended
	Sep. 30, 2016 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)	Dec. 31, 2011 USD ($)
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
Operating Segments [Member]
Restructuring and Related Cost, Incurred Cost		$ 9,000,000
Restructuring and Related Cost, Number of Positions Eliminated		100
Asset Impairment Charges		$ 8,247,000		$ 1,000,000
Impairment of Real Estate		$ 7,500,000
Number of Properties Sold	2
Real Estate Sold, Cost Basis	$ 4,400,000