Note 5 - Federal Home Loan Bank Advances (Details) - Maturity and Interest Rate Information on Advances from FHLB - USD ($)		Jun. 30, 2015	Dec. 31, 2014
Maturity:
2015		$ 67,500,000	$ 63,000,000
2015		0.37%	0.87%
2016		$ 14,000,000	$ 44,500,000
2016		2.08%	3.81%
2017		$ 18,000,000	$ 33,000,000
2017		2.89%	3.59%
2018		$ 33,000,000	$ 43,000,000
2018		3.33%	3.49%
Total FHLB advances		$ 132,500,000	$ 203,500,000
Total FHLB advances		1.63%	2.83%
2019			$ 20,000,000
2019			4.12%
Federal Home Loan Bank, Advances, Putable Option [Member]
Maturity:
2015	[1]
2016	[1]	$ 2,000,000	$ 32,500,000
2016		4.00%	4.56%
2017	[1]		$ 15,000,000
2017			4.42%
2018	[1]	$ 5,000,000	$ 5,000,000
2018		2.84%	2.84%
Total FHLB advances	[1]	$ 7,000,000	$ 52,500,000
Total FHLB advances		3.17%	4.36%
2019	[1]

[1] Of the advances outstanding, a portion have putable options which allow the FHLB, at its discretion, to terminate the advances and require the subsidiary banks to repay at predetermined dates prior to the stated maturity date of the advances. The amount of advances with putable options decreased $45.5 million from December 31, 2014 to June 30, 2015 due to the prepayment of advances having putable options.