Consolidated Balance Sheet - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 264.3	$ 125.6
Short-term investments	78.7	36.7
Receivables:
Trade receivables, net	167.1	179.8
Other	18.1	25.6
Contract assets	54.6	54.9
Inventories	177.6	215.1
Prepaid expenses and other current assets	19.4	18.9
Total current assets	779.8	656.6
Property, plant and equipment, net	622.0	611.8
Operating lease assets	25.8	0.0
Deferred tax assets, net	11.8	35.9
Intangible assets, net	29.6	32.4
Goodwill	18.8	44.0
Other assets	38.4	38.6
Total	1,526.2	1,419.3
Current liabilities:
Accounts payable	92.0	121.4
Accrued salaries, wages and related expenses	34.4	40.1
Other accrued liabilities	44.0	44.0
Total current liabilities	170.4	205.5
Long-term portion of operating lease liabilities	25.2	0.0
Net liabilities of Salaried VEBA	32.6	32.4
Long-term liabilities	4.5	4.2
Long-term liabilities	67.0	66.4
Long-term debt	492.6	370.4
Total liabilities	792.3	678.9
Commitments and contingencies
Stockholders' equity:
Preferred stock, 5,000,000 shares authorized at both December 31, 2019 and December 31, 2018; no shares were issued and outstanding at December 31, 2019 and December 31, 2018	0.0	0.0
Common stock, par value $0.01, 90,000,000 shares authorized at both December 31, 2019 and December 31, 2018; 22,550,827 shares issued and 15,868,304 shares outstanding at December 31, 2019; 22,471,705 shares issued and 16,234,603 shares outstanding at December 31, 2018	0.2	0.2
Additional paid in capital	1,062.9	1,059.3
Retained earnings	172.8	150.2
Treasury stock, at cost, 6,682,523 shares at December 31, 2019 and 6,237,102 shares at December 31, 2018	(463.4)	(420.5)
Accumulated other comprehensive loss	(38.6)	(48.8)
Total stockholders' equity	733.9	740.4
Total	$ 1,526.2	$ 1,419.3