Note 7 - Common Stock Offering and Balance Sheet Restructuring (Details) - Restructured Wholesale Borrowings Portfolio - Wholesale Borrowings [Member] - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Note 7 - Common Stock Offering and Balance Sheet Restructuring (Details) - Restructured Wholesale Borrowings Portfolio [Line Items]
2015	$ 96,404	$ 103,818
2015	0.36%	0.92%
2016	$ 26,142	$ 50,642
2016	1.52%	3.51%
2017	$ 49,055	$ 53,965
2017	2.07%	2.96%
2018	$ 60,283	$ 60,042
2018	2.93%	3.41%
2019	$ 59,341	$ 83,152
2019	3.07%	3.59%
Thereafter	$ 51,141	$ 51,141
Thereafter	2.64%	2.64%
Total Wholesale Borrowings	$ 342,366	$ 402,760
Total Wholesale Borrowings	1.96%	2.66%