Note 24 - Parent Company Financial Statements - Condensed Statements of Cash Flows (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Amortization of debt issuance costs	$ 48	$ 48
Provision for depreciation and amortization	1,367	1,738
Decrease in other assets	1,079	345
(Decrease) increase in other liabilities	(1,292)	1,094
Net cash provided by operating activities	16,648	20,732
Cash flows from investing activities:
Net cash used by investing activities	79,089	(63,559)
Cash dividends paid on common stock	(3,189)	(2,274)
Proceeds from stock options exercised	52	216
Net cash used in financing activities	(62,498)	23,222
Net decrease in cash and cash equivalents	33,239	(19,605)
Stock issued under employee plans	58	45
Parent Company [Member]
Net income	14,961	15,730
Equity in undistributed net income of subsidiaries	(4,836)	(14,916)
Amortization of debt issuance costs	48	49
Provision for depreciation and amortization	18	18
Decrease in other assets	13	(7)
(Decrease) increase in other liabilities	(164)	227
Net cash provided by operating activities	10,040	1,101
Cash flows from investing activities:
Cash received from acquisition of Merchants Holding Company	292
Cash paid for acquisition of Merchants Holding Company	(15,300)
Net cash used by investing activities	(15,008)
Repayment of term debt	(3,496)	(3,602)
Repurchase of common stock	(1,010)
Cash dividends paid on common stock	(3,189)	(2,274)
Proceeds from stock options exercised	52	216
Net cash used in financing activities	(7,643)	(5,660)
Net decrease in cash and cash equivalents	(12,611)	(4,559)
Cash and cash equivalents at the beginning of year	19,425	23,984
Cash and cash equivalents at the end of year	6,814	19,425
Stock issued under employee plans	$ 58	$ 45