Note 12 - Condensed Financial Statements of Parent Company - Condensed Balance Sheets (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Assets
Cash and due from banks	$ 10,290	$ 12,882	$ 12,926	$ 13,974
Interest-bearing deposits	76,881	43,491
Investments in subsidiaries	183,056	189,692
Other assets	14,459	14,585
Total assets	1,321,837	1,256,032
Liabilities and Stockholders’ Equity
Other liabilities	18,214	13,763
Stockholders’ equity	183,726	190,238	$ 184,896	$ 178,263
Total liabilities and stockholders’ equity	1,321,837	1,256,032
Parent Company [Member]
Assets
Cash and due from banks	57	44
Interest-bearing deposits	623	357
Refundable income taxes	423	396
Other assets	880	841
Total assets	185,039	191,330
Liabilities and Stockholders’ Equity
Other liabilities	1,313	1,092
Stockholders’ equity	183,726	190,238
Total liabilities and stockholders’ equity	$ 185,039	$ 191,330