CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 30, 2012	Dec. 25, 2011	Dec. 26, 2010
Operating activities:
Net income (loss)	$ (114.4)	$ (24.2)	$ 14.5
Less: Loss from discontinued operations	(1.5)	(0.7)	(0.1)
Income (loss) from continuing operations	(112.9)	(23.5)	14.6
Adjustments to reconcile income (loss) from continuing operations to net cash provided by operating activities from continuing operations:
Depreciation and amortization	58.0	48.0	12.9
Deferred income taxes	(2.5)	(0.1)	(0.2)
Stock-based compensation	6.6	3.3	1.9
Mark to market on swaps	0	(0.3)	(1.0)
Goodwill and intangible assets impairment charge	96.6	0	0
Amortization of deferred financing costs	5.1	3.8	5.0
Amortization of premium on Senior Secured Notes	(4.2)	(2.8)	0
Provision for doubtful accounts	0.4	1.8	0.4
Change in accrual for excess facilities	1.8	0	(1.4)
Changes in assets and liabilities, net of acquisitions:
Accounts receivable	2.8	(14.4)	2.9
Inventoried costs	(5.2)	4.3	2.9
Prepaid expenses	(1.7)	1.4	(2.9)
Other assets	(0.2)	1.3	3.2
Accounts payable	25.6	(15.8)	8.7
Accrued expenses	(10.3)	1.0	(10.0)
Accrued compensation	4.3	(3.8)	3.4
Accrued interest	1.2	3.1	0.6
Billings in excess of costs and earnings on uncompleted contracts	(5.0)	(1.8)	3.2
Income tax receivable and payable	(0.7)	(0.2)	(0.3)
Other liabilities	(7.4)	(0.1)	(15.6)
Net cash provided by operating activities from continuing operations	52.3	5.2	28.3
Investing activities:
Cash paid for acquisitions, net of cash acquired	(149.4)	(391.1)	(206.9)
Proceeds from the disposition of discontinued operations	0.3	0	0.1
Cash transferred from (to) restricted cash	0.6	3.0	(0.1)
Capital expenditures	(16.6)	(7.5)	(2.3)
Net cash used in investing activities from continuing operations	(165.1)	(395.6)	(209.2)
Financing activities:
Proceeds from the issuance of long-term debt, net of issuance costs	0	425.7	225.0
Proceeds from the issuance of common stock, net of issuance costs	97.0	61.1	24.7
Borrowing under credit facility	50.0	0	61.9
Repayments under credit facility	(51.0)	(2.7)	(119.6)
Purchase of treasury stock	0	(10.9)	0
Cash paid for contingent acquisition consideration	(2.5)	0	0
Debt issuance costs	(1.2)	(22.1)	(11.0)
Proceeds from exercise of restricted stock units, employee stock options, and employee stock purchase plan	0	2.0	1.7
Other	(1.4)	(0.7)	(0.8)
Net cash provided by financing activities from continuing operations	90.9	452.4	181.9
Net cash flows of continuing operations	(21.9)	62.0	1.0
Net operating cash flows of discontinued operations	1.3	(2.7)	(0.1)
Effect of exchange rate changes on cash and cash equivalents	0	(0.5)	0
Net increase (decrease) in cash and cash equivalents	(20.6)	58.8	0.9
Cash and cash equivalents at beginning of year	69.6	10.8	9.9
Cash and cash equivalents at end of year	49.0	69.6	10.8
Supplemental disclosure of cash flow information:
Cash paid during the year for interest	64.0	46.2	15.4
Net cash paid during the year for income taxes	2.7	1.5	0.9
Non-cash investing and financing activities:
Common stock and stock options issued for acquisitions	23.8	111.6	24.7
Liability for contingent cash consideration	2.1	1.8	5.8
Supplemental disclosures of non-cash investing and financing transactions:
Fair value of assets acquired in acquisitions	218.3	731.3	304.9
Liabilities assumed in acquisitions	$ 35.2	$ 197.2	$ 87.6