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CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Millions, except Share data, unless otherwise specified | Mar. 31, 2013 | Dec. 31, 2012
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CONDENSED CONSOLIDATED BALANCE SHEETS |  |
Accounts receivable, allowances (in dollars) | $ 14.2 | $ 14.6
Preferred stock, par value (in dollars per share) | $ 0.01 | $ 0.01
Preferred stock, shares authorized | 10,000,000 | 10,000,000
Preferred stock, shares issued | 0 | 0
Preferred stock, shares outstanding | 0 | 0
Common stock, par value (in dollars per share) | $ 0.01 | $ 0.01
Common stock, shares authorized | 50,000,000 | 50,000,000
Common stock, shares issued | 16,274,270 | 16,090,544
Common stock, shares outstanding | 15,688,098 | 15,576,721
Treasury stock, shares | 586,172 | 513,823

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