CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 24, 2012	Jun. 26, 2011
Operating activities:
Net loss	$ (20.2)	$ (8.7)
Less: Income (loss) from discontinued operations	(2.8)	0.4
Loss from continuing operations	(17.4)	(9.1)
Adjustments to reconcile loss from continuing operations to net cash provided by (used in) operating activities from continuing operations:
Depreciation and amortization	25.9	16.2
Deferred income taxes	1.3	0.2
Stock-based compensation	2.3	1.4
Mark to market on swaps	0	(0.3)
Amortization of deferred financing costs	2.5	1.3
Amortization of premium on Senior Secured Notes	(2.1)	0
Provision for doubtful accounts	0.3	0.1
Changes in assets and liabilities, net of acquisitions:
Accounts receivable	11.6	1.8
Inventoried costs	(9.6)	6.4
Prepaid expenses and other assets	(3.7)	3.9
Accounts payable	9.4	(9.2)
Accrued compensation	(6.6)	(2.1)
Accrued expenses	0.3	(7.7)
Billings in excess of costs and earnings on uncompleted contracts	(2.3)	(12.3)
Income tax receivable and payable	(1.5)	0.2
Other liabilities	(0.6)	(0.9)
Net cash provided by (used in) operating activities from continuing operations	9.8	(10.1)
Investing activities:
Cash paid for acquisitions, net of cash acquired	(21.5)	(249.2)
Decrease in restricted cash	0.3	1.2
Capital expenditures	(6.2)	(2.7)
Net cash used in investing activities from continuing operations	(27.4)	(250.7)
Financing activities:
Proceeds from the issuance of long-term debt	0	305.0
Proceeds from the issuance of common stock	97.0	61.1
Debt issuance costs	(1.0)	(14.6)
Repayment under credit facility	0.5	2.2
Cash paid for contingent acquisition consideration	2.5	0
Other	(0.3)	1.0
Net cash provided by financing activities from continuing operations	92.7	350.3
Net cash flows of continuing operations	75.1	89.5
Net operating cash flows of discontinued operations	1.3	0.1
Effect of exchange rate changes on cash and cash equivalents	(0.3)	0
Net increase in cash and cash equivalents	76.1	89.6
Cash and cash equivalents at beginning of period	69.6	10.8
Cash and cash equivalents at end of period	$ 145.7	$ 100.4