Consolidated Balance Sheets (Parentheticals) - USD ($) $ / shares in Thousands, $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Loans, allowance	$ 8,376	$ 8,880
Common stock, par value (in dollars per share)	$ 0	$ 0
Common stock, shares authorized (in shares)	39,000,000	39,000,000
Voting Common Stock [Member]
Common stock, shares issued (in shares)	6,251,975	6,242,720
Common stock, shares outstanding (in shares)	6,251,975	6,242,720
Nonvoting Common Stock [Member]
Common stock, shares issued (in shares)	1,220,000	1,220,000
Common stock, shares outstanding (in shares)	1,220,000	1,220,000

Face amount per share of no-par value common stock.

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