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Consolidated Balance Sheets (Parentheticals) - USD ($)
shares in Thousands, $ / shares in Thousands, $ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Inventory, LIFO debit $ 597 $ 3,071
Preferred stock, par value (in dollars per share) $ 0 $ 0
Preferred stock, shares authorized (in shares) 5,000 5,000
Preferred stock, shares issued (in shares) 0 0
Preferred stock, shares outstanding (in shares) 0 0
Common stock, par value (in dollars per share) $ 0 $ 0
Common stock, shares authorized (in shares) 20,000 20,000
Common stock, shares issued (in shares) 11,020 11,020
Common stock, shares outstanding (in shares) 10,996 11,008
Treasury stock, shares (in shares) 25 12