CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	3 Months Ended
	Mar. 27, 2022	Mar. 28, 2021
Operating activities:
Net income (loss)	$ (15.9)	$ 1.9
Loss from discontinued operations	(0.2)	0.0
Income (loss) from continuing operations	(15.7)	1.9
Adjustments to reconcile income (loss) from continuing operations to net cash provided by (used in) operating activities from continuing operations:
Depreciation and amortization	7.0	6.3
Deferred income taxes	0.0	0.1
Amortization of lease right-of-use assets	2.6	2.2
Stock-based compensation	7.0	6.2
Amortization of deferred financing costs	0.3	0.2
Loss on extinguishment of debt	13.0	0.0
Recovery of doubtful accounts	0.0	(0.1)
Changes in assets and liabilities, net of acquisitions:
Accounts receivable	31.9	9.8
Unbilled receivables	(19.8)	(1.8)
Inventoried costs	(15.3)	(4.2)
Prepaid expenses and other assets	(9.5)	(2.0)
Operating lease liabilities	(2.7)	(2.2)
Accounts payable	1.3	(2.0)
Accrued expenses	6.1	(2.7)
Accrued compensation	5.6	6.2
Accrued interest	(1.3)	4.9
Billings in excess of costs and earnings on uncompleted contracts	(8.3)	7.1
Income tax receivable and payable	(4.9)	(2.2)
Other liabilities	(5.2)	(5.0)
Net cash provided by (used in) operating activities from continuing operations	(7.9)	22.7
Investing activities:
Cash paid for acquisitions, net of cash acquired	(58.5)	(5.1)
Capital expenditures	(10.8)	(9.6)
Net cash used in investing activities from continuing operations	(69.3)	(14.7)
Financing activities:
Proceeds from the issuance of long-term debt	200.0	0.0
Debt issuance costs	(3.2)	0.0
Credit agreement borrowings	100.0	0.0
Repayment of debt	(309.8)	0.0
Payments under finance leases	(0.3)	(0.2)
Payments of employee taxes withheld from share-based awards	(6.8)	(7.1)
Proceeds from shares issued under equity plans	2.9	2.5
Net cash used in financing activities from continuing operations	(17.2)	(4.8)
Net cash provided by (used in) continuing operations	(94.4)	3.2
Net operating cash flows of discontinued operations	0.1	(0.5)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(0.7)	(0.6)
Net increase (decrease) in cash, cash equivalents and restricted cash	(95.0)	2.1
Cash, cash equivalents and restricted cash at beginning of period	349.4	381.5
Cash, cash equivalents and restricted cash at end of period	$ 254.4	$ 383.6