Note 14 - Subsequent Event (Details Textual) - Subsequent Event [Member] - USD ($)	Nov. 03, 2015	Nov. 02, 2015
Series A Convertible Preferred Stock [Member]
Preferred Stock, Redemption Price Per Share	$ 15.75
Preferred Stock, Per Share Amounts of Preferred Dividends in Arrears	0.04
Preferred Stock, Redemption Price Per Share Including Accrued Dividends Per Share	$ 15.79
Stock Redeemed or Called During Period, Shares	8,290,775
Stock Redeemed or Called During Period, Value	$ 130,580,000
Stock Conversion from Preferred Stock to Common Stock [Member]
Conversion of Stock, Shares Issued		597,968
Common Stock [Member]
Convertible Preferred Stock, Shares Issued upon Conversion		0.24204
Stock Conversion from Preferred Stock to Common Stock [Member]
Conversion of Stock, Shares Converted		2,470,917
Borrowings on Credit Facility	$ 110,000,000