Unaudited Condensed Consolidated Balance Sheet (Parenthetical) (USD $) In Millions, except Share data, unless otherwise specified	Jun. 28, 2014	Dec. 31, 2013
Current Assets:
Allowance for doubtful accounts	$ 5.2	$ 4.2
Other Assets:
Accumulated amortization of intangible assets	$ 179.6	$ 178.6
Stockholders' Equity:
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	90,000,000	90,000,000
Common stock, shares issued	15,902,154	15,682,746
Treasury stock, shares	333,201	263,145