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Consolidated Balance Sheets (Parentheticals) - USD ($) shares in Thousands, $ / shares in Thousands, $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Inventory, LIFO debit	$ 3,071	$ 5,337
Preferred stock, par value (in dollars per share)	$ 0	$ 0
Preferred stock, authorized (in shares)	5,000	5,000
Preferred stock, issued (in shares)	0	0
Preferred stock, outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0	$ 0
Common stock, authorized (in shares)	20,000	20,000
Common stock, issued (in shares)	11,008	10,989
Common stock, outstanding (in shares)	11,008	10,989
Treasury stock, shares (in shares)	12	31

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

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Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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Face amount per share of no-par value preferred stock nonredeemable or redeemable solely at the option of the issuer.

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