Note 19 - Condensed Financial Statements of Parent Company - Statement of Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Net Income	$ 2,430	$ 2,292	$ 970	$ 1,360	$ 1,375	$ 2,064	$ 1,801	$ 1,704	$ 7,052	$ 6,944
Other Comprehensive (Loss) Income:
Unrealized Losses on Available-for-Sale Securities Net of Income Benefit Tax of ($11) and ($16), for the Years Ended December 31, 2018 and 2017, Respectively									(59)	189
Reclassification Adjustment for Gains on Securities Included in Net Income, Net of Income Tax of $70 for the Year Ended December 31, 2017. (1)										(131)
Other Comprehensive Loss									(59)	58
Total Comprehensive Income									6,993	7,002
Parent Company [Member]
Net Income									7,052	6,944
Other Comprehensive (Loss) Income:
Unrealized Losses on Available-for-Sale Securities Net of Income Benefit Tax of ($11) and ($16), for the Years Ended December 31, 2018 and 2017, Respectively									(39)	(31)
Reclassification Adjustment for Gains on Securities Included in Net Income, Net of Income Tax of $70 for the Year Ended December 31, 2017. (1)										(137)
Other Comprehensive Loss									(39)	(168)
Total Comprehensive Income									$ 7,013	$ 6,776