Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Trade, allowances	$ 4.6	$ 3.6
Common stock, par value (in dollars per share)	$ 0.375	$ 0.375
Common stock, shares authorized (in shares)	60,000,000	60,000,000
Common stock, shares issued (in shares)	18,503,805	18,336,010
Common stock, shares outstanding (in shares)	18,503,805	18,336,010

Amount of allowance for credit loss on accounts receivable, classified as current.

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