Note 22 - Parent Company-only Financial Statements - Condensed Statements of Income and Comprehensive Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Interest on subordinated debt	$ 991	$ 1,118	$ 767
Interest on senior debt	915	915	915
Total interest expense	13,750	18,218	12,378
Other operating expense	2,199	2,092	1,661
Loss before benefit for income taxes	(4,156)	(3,716)	4,086
Benefit for income taxes	(337)	(899)	890
Net income (loss)	(3,819)	(2,817)	3,196
Total comprehensive income	(3,934)	(2,394)	2,525
Parent Company [Member]
Interest on subordinated debt	347	476	454
Interest on senior debt	1,569	1,571	1,242
Total interest expense	1,916	2,047	1,696
Other operating expense	159	214	313
Loss before benefit for income taxes	2,075	2,261	2,009
Benefit for income taxes	(532)	(504)
Loss before equity in undistributed net income of subsidiary	1,543	1,757	2,009
Equity in undistributed net income of subsidiary	(2,276)	(1,060)	5,205
Net income (loss)	(3,819)	(2,817)	3,196
Equity in subsidiary other comprehensive income, net of subsidiary	(115)	423	(671)
Total comprehensive income	$ (3,934)	$ (2,394)	$ 2,525