CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Millions	Apr. 01, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 127.8	$ 130.5
Restricted cash	0.4	0.4
Accounts receivable, net	57.7	74.2
Unbilled receivable, net	151.2	138.1
Inventoried costs	48.2	49.0
Prepaid expenses	6.8	11.1
Other current assets	12.9	9.5
Current assets of discontinued operations	52.1	58.6
Total current assets	457.1	471.4
Property, plant and equipment, net	61.5	58.0
Goodwill	425.7	425.7
Intangible assets, net	20.3	22.0
Other assets	7.8	8.1
Non-current assets of discontinued operations	38.8	38.8
Total assets	1,011.2	1,024.0
Current liabilities:
Accounts payable	31.3	34.7
Accrued expenses	33.8	40.9
Accrued compensation	34.1	30.2
Accrued interest	6.6	1.7
Billings in excess of costs and earnings on uncompleted contracts	38.2	42.8
Other current liabilities	7.8	9.4
Current liabilities of discontinued operations	23.2	29.2
Total current liabilities	175.0	188.9
Long-term debt principal, net of current portion	293.6	293.5
Other long-term liabilities	24.2	24.1
Non-current liabilities of discontinued operations	5.9	6.0
Total liabilities	498.7	512.5
Commitments and contingencies
Stockholders’ equity:
Preferred stock, $0.001 par value, 5,000,000 shares authorized, 0 shares outstanding at April 1, 2018 and December 31, 2017	0.0	0.0
Common stock, $0.001 par value, 195,000,000 shares authorized; 103,513,103 and 103,297,525 shares issued and outstanding at April 1, 2018 and December 31, 2017, respectively	0.0	0.0
Additional paid-in capital	1,237.2	1,233.7
Accumulated other comprehensive loss	(1.5)	(1.4)
Accumulated deficit	(723.2)	(720.8)
Total stockholders’ equity	512.5	511.5
Total liabilities and stockholders’ equity	$ 1,011.2	$ 1,024.0