Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 31, 2011	Jan. 01, 2011
Assets
Accounts receivable, allowance for bad debts	$ 2,241	$ 2,134
Intangible assets, accumulated amortization	$ 82,364	$ 56,689
Stockholders' equity:
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	150,000,000	150,000,000
Common Stock, Shares, Issued	117,591,822	93,014,691
Treasury Stock, Shares	543,384	455,020