Consolidated Balance Sheets (Unaudited) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 73.9	$ 55.2
Short-term investments	191.4	231.0
Receivables:
Trade receivables, net	138.2	137.7
Other	15.4	11.9
Inventories	212.2	201.6
Prepaid expenses and other current assets	31.5	18.5
Total current assets	662.6	655.9
Property, plant and equipment, net	557.8	530.9
Deferred tax assets, net	118.7	159.7
Intangible assets, net	25.3	26.4
Goodwill	18.8	37.2
Other assets	39.5	33.4
Total	1,422.7	1,443.5
Current liabilities:
Accounts payable	94.4	75.8
Accrued salaries, wages and related expenses	39.0	49.1
Other accrued liabilities	43.3	40.1
Total current liabilities	176.7	165.0
Net liabilities of Salaried VEBA	27.8	28.6
Deferred tax liabilities	3.3	3.3
Long-term liabilities	61.9	73.2
Long-term debt	369.4	368.7
Total liabilities	639.1	638.8
Commitments and contingencies
Stockholders' equity:
Preferred stock, 5,000,000 shares authorized at both September 30, 2017 and December 31, 2016; no shares were issued and outstanding at September 30, 2017 and December 31, 2016	0.0	0.0
Common stock, par value $0.01, 90,000,000 shares authorized at both September 30, 2017 and at December 31, 2016; 22,392,946 shares issued and 16,905,368 shares outstanding at September 30, 2017; 22,332,732 shares issued and 17,651,461 shares outstanding at December 31, 2016	0.2	0.2
Additional paid in capital	1,052.8	1,047.4
Retained earnings	109.0	75.2
Treasury stock, at cost, 5,487,578 shares at September 30, 2017 and 4,681,271 shares at December 31, 2016, respectively	(345.7)	(281.4)
Accumulated other comprehensive loss	(32.7)	(36.7)
Total stockholders' equity	783.6	804.7
Total	$ 1,422.7	$ 1,443.5