Note 10 - Deposits (Details) - Scheduled Maturities of Time Deposits - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Note 10 - Deposits (Details) - Scheduled Maturities of Time Deposits [Line Items]
Three months or less	$ 45,444,000
Over three months through one year	97,865,000
Over one year through three years	98,557,000
Over three years	18,164,000
Total time deposits	260,030,000
Total time deposits	35,556,760	$ 29,033,343
$250,000 or Less [Member]
Note 10 - Deposits (Details) - Scheduled Maturities of Time Deposits [Line Items]
Three months or less	38,143,000
Over three months through one year	82,920,000
Over one year through three years	87,663,000
Over three years	15,747,000
Total time deposits	224,473,000
More than $250,000 [Member]
Note 10 - Deposits (Details) - Scheduled Maturities of Time Deposits [Line Items]
Three months or less	7,301,000
Over three months through one year	14,945,000
Over one year through three years	10,894,000
Over three years	2,417,000
Total time deposits	$ 35,557,000