CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Dec. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 182.7	$ 130.5
Restricted cash	0.3	0.4
Accounts receivable, net	64.6	74.2
Unbilled receivables, net	172.8	138.1
Inventoried costs	46.8	49.0
Prepaid expenses	8.9	11.1
Other current assets	10.3	9.5
Current assets of discontinued operations	8.3	58.6
Total current assets	494.7	471.4
Property, plant and equipment, net	67.1	58.0
Goodwill	425.7	425.7
Intangible assets, net	16.1	22.0
Other assets	6.5	8.1
Non-current assets of discontinued operations	0.0	38.8
Total assets	1,010.1	1,024.0
Current liabilities:
Accounts payable	46.6	34.7
Accrued expenses	38.1	40.9
Accrued compensation	33.5	30.2
Accrued interest	1.6	1.7
Billings in excess of costs and earnings on uncompleted contracts	34.9	42.8
Other current liabilities	4.7	9.4
Current liabilities of discontinued operations	5.3	29.2
Total current liabilities	164.7	188.9
Long-term debt principal, net of current portion	294.2	293.5
Other long-term liabilities	25.5	24.1
Long-term liabilities of discontinued operations	6.4	6.0
Total liabilities	490.8	512.5
Commitments and contingencies
Stockholders’ equity:
Preferred stock, $0.001 par value, 5,000,000 authorized, 0 shares outstanding at December 30, 2018 and December 31, 2017	0.0	0.0
Common stock, $0.001 par value, 195,000,000 shares authorized; 103,766,899 and 103,297,525 shares issued and outstanding at December 30, 2018 and December 31, 2017, respectively	0.0	0.0
Additional paid-in capital	1,244.5	1,233.7
Accumulated other comprehensive loss	(0.7)	(1.4)
Accumulated deficit	(724.5)	(720.8)
Total stockholders’ equity	519.3	511.5
Total liabilities and stockholders’ equity	$ 1,010.1	$ 1,024.0