Note 9 - Other Borrowings and Unused Lines of Credit (Details) - Wholesale Repurchase Agreements (USD $)	Dec. 31, 2013	Dec. 31, 2012
Note 9 - Other Borrowings and Unused Lines of Credit (Details) - Wholesale Repurchase Agreements [Line Items]
Wholesale repurchase agreements (in Dollars)	$ 142,448,362	$ 138,239,762
Wholesale Repurchase Agreements [Member]
Note 9 - Other Borrowings and Unused Lines of Credit (Details) - Wholesale Repurchase Agreements [Line Items]
Wholesale repurchase agreements (in Dollars)	130,000,000	130,000,000
Weighted average interest rate at year-end	3.21%	3.43%
Maturing in Next 12 Months [Member] | Wholesale Repurchase Agreements [Member]
Note 9 - Other Borrowings and Unused Lines of Credit (Details) - Wholesale Repurchase Agreements [Line Items]
Wholesale repurchase agreements (in Dollars)	5,000,000	35,000,000
Weighted average interest rate at year-end	2.77%	3.00%
Maturing in 2015 [Member] | Wholesale Repurchase Agreements [Member]
Note 9 - Other Borrowings and Unused Lines of Credit (Details) - Wholesale Repurchase Agreements [Line Items]
Wholesale repurchase agreements (in Dollars)		20,000,000
Weighted average interest rate at year-end	0.00%	3.46%
Maturing in 2016 [Member] | Wholesale Repurchase Agreements [Member]
Note 9 - Other Borrowings and Unused Lines of Credit (Details) - Wholesale Repurchase Agreements [Line Items]
Wholesale repurchase agreements (in Dollars)	10,000,000	10,000,000
Weighted average interest rate at year-end	3.00%	3.00%
Maturing Thereafter [Member] | Wholesale Repurchase Agreements [Member]
Note 9 - Other Borrowings and Unused Lines of Credit (Details) - Wholesale Repurchase Agreements [Line Items]
Wholesale repurchase agreements (in Dollars)	$ 115,000,000	$ 65,000,000
Weighted average interest rate at year-end	3.25%	3.71%