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Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Allowances for doubtful accounts	$ 3.8	$ 2.9
Inventory allowances	$ 14.5	$ 13.6
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	40,000,000	40,000,000
Common stock, shares issued	29,554,500	29,554,500
Treasury stock, shares	5,047,278	5,120,799

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

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