Note 12 - Common Stock Offering and Balance Sheet Restructuring (Details) - Restructured Wholesale Borrowings Portfolio - Wholesale Borrowings [Member] - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Note 12 - Common Stock Offering and Balance Sheet Restructuring (Details) - Restructured Wholesale Borrowings Portfolio [Line Items]
2015	0.00%
2015 (in Dollars)	$ 125,038	$ 117,300
2015	0.59%	0.86%
2016 (in Dollars)	$ 125,038	$ 117,300
2016	0.59%	0.86%
2016 (in Dollars)	$ 49,055	$ 50,642
2016	2.07%	3.51%
2017 (in Dollars)	$ 49,055	$ 50,642
2017	2.07%	3.51%
2017 (in Dollars)	$ 57,283	$ 53,965
2017	2.87%	2.96%
2018 (in Dollars)	$ 57,283	$ 53,965
2018	2.87%	2.96%
2018 (in Dollars)	$ 50,089	$ 60,042
2018	3.14%	3.41%
2019 (in Dollars)	$ 50,089	$ 60,042
2019	3.14%	3.41%
2019 (in Dollars)	$ 45,000	$ 83,152
2019	2.66%	3.59%
2020 (in Dollars)	$ 45,000	$ 83,152
2020	2.66%	3.59%
2020 (in Dollars)		$ 45,000
2020		2.66%
Thereafter (in Dollars)	$ 3,641
Thereafter	2.51%
Thereafter (in Dollars)		$ 6,141
Thereafter		2.54%
Total Wholesale Borrowings (in Dollars)	$ 330,106	$ 416,242
Total Wholesale Borrowings	1.89%	2.59%
Total Wholesale Borrowings (in Dollars)	$ 330,106	$ 416,242