CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Jun. 28, 2015	Dec. 28, 2014
Current assets:
Cash and cash equivalents	$ 22.2	$ 33.5
Restricted cash	0.7	5.4
Accounts receivable, net	204.5	217.5
Inventoried costs	49.5	47.4
Prepaid expenses	9.1	7.1
Other current assets	13.5	10.2
Current assets of discontinued operations	53.7	53.8
Total current assets	353.2	374.9
Property, plant and equipment, net	60.9	61.6
Goodwill	483.4	483.4
Intangible assets, net	42.2	49.5
Other assets	28.6	32.4
Non-current assets of discontinued operations	134.3	137.0
Total assets	1,102.6	1,138.8
Current liabilities:
Accounts payable	46.2	44.6
Accrued expenses	28.3	32.4
Accrued compensation	34.1	41.1
Accrued interest	5.6	5.6
Billings in excess of costs and earnings on uncompleted contracts	49.8	49.6
Deferred income tax liability	30.2	30.3
Other current liabilities	5.6	7.9
Current liabilities of discontinued operations	16.1	14.6
Total current liabilities	215.9	226.1
Long-term debt principal, net of current portion	622.0	622.0
Line of credit	41.0	41.0
Other long-term liabilities	24.4	24.9
Non-current liabilities of discontinued operations	0.6	0.5
Total liabilities	$ 903.9	$ 914.5
Commitments and contingencies
Stockholders’ equity:
Preferred stock, $0.001 par value, 5,000,000 shares authorized, 0 shares outstanding at December 28, 2014 and June 28, 2015	$ 0.0	$ 0.0
Common stock, $0.001 par value, 195,000,000 shares authorized; 57,801,978 and 58,442,129 shares issued and outstanding at December 28, 2014 and June 28, 2015, respectively	0.0	0.0
Additional paid-in capital	869.0	863.4
Accumulated other comprehensive loss	(1.6)	(1.7)
Accumulated deficit	(668.7)	(637.4)
Total stockholders' equity	198.7	224.3
Total liabilities and stockholders’ equity	$ 1,102.6	$ 1,138.8