Note 9 - Goodwill and Other Intangibles - Future Amortization Expense (Core Deposits) (Details) - Core Deposits [Member] - USD ($)		Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	[4]
2017	[1]	$ 241,678
2018		223,002
2019	[2]	223,002
2020		223,002
2021		223,002
Thereafter		477,501
Total	[3]	$ 1,611,187	$ 1,895,514	$ 2,182,909	$ 7,860

[1] CDI related to the acquisition of Green Street Financial Corp on November 30, 1999.

[2] CDI related to the acquisition of branch offices from Bank of America, N.A. on December 12, 2014.

[3] Includes the core deposit intangible (CDI), which is the only identifiable intangible asset subject to amortization at December 31, 2016, 2015 and 2014, respectively:

[4] CDI related to the acquisition of Green Street Financial Corp on November 30, 1999.