Discontinued Operations (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended			1 Months Ended	3 Months Ended
	Sep. 30, 2012	Sep. 25, 2011	Sep. 30, 2012	Sep. 25, 2011	Dec. 25, 2011	Jun. 30, 2012 Discontinued operations Integral Systems, Inc.	Jun. 24, 2012 Discontinued operations Integral Systems, Inc.
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Goodwill impairment charge associated with discontinued operations						$ 1.5	$ 1.5
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Revenue	6.0	4.4	13.3	4.4
Net income (loss) before taxes	0.2	0.3	(2.7)	0.4
Benefit for income taxes	0	0	(0.1)	(0.3)
Net income (loss) after taxes	0.2	0.3	(2.6)	0.7
Disposal Group, Including Discontinued Operation, Balance Sheet Disclosures [Abstract]
Cash	0.2		0.2		0.2
Accounts receivable, net	1.8		1.8		5.3
Other current assets	3.9		3.9		4.2
Current assets of discontinued operations	5.9		5.9		9.7
Other non-current assets	0.8		0.8		2.4
Non-current assets of discontinued operations	0.8		0.8		2.4
Accounts payable	1.4		1.4		0.9
Accrued expenses	4.1		4.1		5.1
Other current liabilities	0.3		0.3		0.3
Current liabilities of discontinued operations	5.8		5.8		6.3
Other non-current liabilities	0.3		0.3		0.5
Non-current liabilities of discontinued operations	$ 0.3		$ 0.3		$ 0.5