Discontinued Operations (Components Of Assets And Liabilities Of Discontinued Operations) (Details) (USD $) In Thousands	Oct. 01, 2011	Dec. 31, 2010
Discontinued Operations [Abstract]
Cash and cash equivalents	$ 0	$ 1,301
Accounts receivable, net	0	24,003
Inventories	0	772
Deferred income taxes	0	3,492
Prepaid expenses and other current assets	0	3,328
Property and equipment, net	0	1,890
Goodwill	0	72,230
Other intangibles, net	0	39,951
Other assets	0	1,202
Assets of discontinued operations	0	148,169
Accounts payable	0	726
Accrued liabilities	0	2,927
Deferred revenue	0	17,791
Deferred rent	0	199
Other long-term liabilities	0	184
Liabilities of discontinued operations	$ 0	$ 21,827