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Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($) shares in Thousands, $ in Thousands	Mar. 31, 2018	Jun. 30, 2017
Reserve for doubtful accounts	$ 2,534	$ 2,406
Common stock, par value (in dollars per share)	$ 1.50	$ 1.50
Common stock, shares authorized (in shares)	60,000,000	60,000,000
Common stock, shares issued (in shares)	27,984,278	27,984,278
Common stock, shares outstanding (in shares)	12,710,243	12,662,661
Treasury shares, shares (in shares)	15,274,035	15,321,617

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A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible.

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Face amount or stated value per share of common stock.

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The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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