Note 18 - Parent Company Only Financial Statements - Condensed Statement of Cash Flows (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Net income	$ 10,340	$ 9,014
Amortization of premiums and accretion of discounts on investments, net	1,551	1,791
Net cash from operating activities	11,840	14,097
Proceeds from maturities, calls, and principal repayments of securities available for sale	57,166	30,157
Proceeds from sales of securities available for sale	210,264	16,545
Net cash from investing activities	(314,538)	(19,950)
Repurchase of common stock	(7,413)	(7,830)
Payment of dividends	(2,185)	(1,414)
Net cash from financing activities	319,114	28,269
Net increase (decrease) in cash	16,416	22,416
CASH AND CASH EQUIVALENTS, beginning of period	48,739	26,323
CASH AND CASH EQUIVALENTS, end of period	65,155	48,739
Income taxes	2,900	1,700
Unrealized gain (loss) on securities available for sale	(8,837)	(4,069)
Parent Company [Member]
Net income	12,340	17,014
Equity in undistributed earnings of subsidiary	(10,615)	(13,270)
Amortization of premiums and accretion of discounts on investments, net	50	81
Gain on sale of securities available for sale	(250)	0
Change in payable to subsidiary	(105)	81
Change in other assets	(171)	(227)
Change in other liabilities	81	(17)
Net cash from operating activities	1,330	3,662
Proceeds from maturities, calls, and principal repayments of securities available for sale	2,065	2,808
Proceeds from sales of securities available for sale	9,872	0
ESOP loan repayment	576	560
Investment in equity securities	(1,401)	0
Net cash from investing activities	11,112	3,368
Repurchase of common stock	(7,591)	(8,135)
Payment of dividends	(2,185)	(1,414)
Net cash from financing activities	(9,776)	(9,549)
Net increase (decrease) in cash	2,666	(2,519)
CASH AND CASH EQUIVALENTS, beginning of period	5,989	8,508
CASH AND CASH EQUIVALENTS, end of period	8,655	5,989
Income taxes	360	0
Unrealized gain (loss) on securities available for sale	$ 0	$ 384