CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 24, 2012
Operating activities:
Net loss	$ (19.9)	$ (20.2)
Less: Loss from discontinued operations	(4.4)	(2.8)
Loss from continuing operations	(15.5)	(17.4)
Adjustments to reconcile loss from continuing operations to net cash provided by operating activities from continuing operations:
Depreciation and amortization	27.8	25.9
Deferred income taxes	0	1.3
Stock-based compensation	3.9	2.3
Amortization of deferred financing costs	2.6	2.5
Amortization of premium on Senior Secured Notes	(2.1)	(2.1)
Provision for doubtful accounts	0.2	0.3
Changes in assets and liabilities, net of acquisitions:
Accounts receivable	18.2	11.6
Inventoried costs	9.2	(9.6)
Prepaid expenses and other assets	(0.1)	(3.7)
Accounts payable	(18.9)	9.4
Accrued compensation	(8.1)	(6.6)
Accrued expenses	(7.8)	0.3
Accrued interest payable	(0.3)	0
Billings in excess of costs and earnings on uncompleted contracts	1.9	(2.3)
Income tax receivable and payable	4.1	(1.5)
Other liabilities	(6.7)	(0.6)
Net cash provided by operating activities from continuing operations	8.4	9.8
Investing activities:
Cash paid for acquisitions, net of cash acquired	1.2	(21.5)
Decrease in restricted cash	0.2	0.3
Proceeds from the sale of discontinued operations	0.4	0
Capital expenditures	(7.3)	(6.2)
Net cash used in investing activities from continuing operations	(5.5)	(27.4)
Financing activities:
Proceeds from the issuance of common stock	0	97.0
Cash paid for contingent acquisition consideration	(2.1)	(2.5)
Repayment of debt	(0.5)	(0.5)
Debt issuance costs	0	(1.0)
Other	(0.3)	(0.3)
Net cash provided by (used in) financing activities from continuing operations	(2.9)	92.7
Net cash flows of continuing operations	0	75.1
Net operating cash flows of discontinued operations	0.8	1.3
Effect of exchange rate changes on cash and cash equivalents	(0.1)	(0.3)
Net increase in cash and cash equivalents	0.7	76.1
Cash and cash equivalents at beginning of period	49.0	69.6
Cash and cash equivalents at end of period	$ 49.7	$ 145.7