UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEET (Parenthetical) - USD ($) $ in Millions	Apr. 02, 2016	Dec. 31, 2015
Current Assets:
Allowance for doubtful accounts	$ 3.8	$ 3.6
Other Assets:
Accumulated amortization of intangible assets	$ 295.5	$ 278.4
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	17,101,015	17,041,710
Treasury stock, shares	794,411	782,670