Note 13 - Related Parties - Loans Outstanding to Directors and Executive Officers (Details) - Directors and Executive Officers [Member] - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Beginning balance	$ 11,151,000	$ 9,002,000
New loans	4,652,000	3,371,000
Repayments	(6,921,000)	(965,000)
Adjustments	0	(257,000)
Ending balance	$ 8,882,000	$ 11,151,000