Note 21 - Parent Only Condensed Financial Statements - Condensed Statements of Cash Flows (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Net income	$ 11,537	$ 9,094
Stock based compensation	431	103
Decrease (increase) in other assets	3,357	1,691
Net cash from operating activities	13,033	9,399
Proceeds from sale of common stock and exercise of stock options	7	91
Net cash used in financing activities	45,503	22,858
NET INCREASE IN CASH AND CASH EQUIVALENTS	(23,028)	(41,637)
CASH AND CASH EQUIVALENTS, beginning of period	149,173	190,810
CASH AND CASH EQUIVALENTS, end of period	126,145	149,173
Cash paid during the year for income taxes	4,145	5,922
Parent Company [Member]
Net income	11,537	9,094
Undistributed net income of subsidiary	(9,919)	(7,207)
Stock based compensation	431	103
(Decrease) increase in other liabilities	(6)	33
Decrease (increase) in other assets	79	(52)
Net cash from operating activities	2,122	1,971
Shareholder cash dividends paid	(2,117)	(2,022)
Proceeds from sale of common stock and exercise of stock options	7	91
Net cash used in financing activities	(2,110)	(1,931)
NET INCREASE IN CASH AND CASH EQUIVALENTS	12	40
CASH AND CASH EQUIVALENTS, beginning of period	269	229
CASH AND CASH EQUIVALENTS, end of period	281	269
Cash paid during the year for income taxes	$ 4,145	$ 5,922