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Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($)
$ / shares in Thousands, $ in Thousands
Sep. 30, 2020
Dec. 31, 2019
Available for sale debt securities, amortized cost $ 416,767 $ 469,313
Preferred stock, par value (in dollars per share) $ 0 $ 0
Preferred stock, shares authorized (in shares) 1,000,000 1,000,000
Preferred stock, shares issued (in shares) 0 0
Preferred stock, shares outstanding (in shares) 0 0
Common stock, no par value (in dollars per share) $ 0 $ 0
Common stock, shares authorized (in shares) 40,000,000 40,000,000
Common stock, shares issued (in shares) 22,692,000 22,604,000
Common stock, shares outstanding (in shares) 22,692,000 22,604,000