Consolidated Balance Sheets - USD ($) $ in Millions		Jun. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents		$ 195.3	$ 72.5
Short-term investments		72.0	30.0
Receivables:
Trade receivables – net		134.6	116.7
Other		8.2	6.1
Inventories		217.5	219.6
Prepaid expenses and other current assets1	[1]	12.8	56.7
Total current assets		640.4	501.6
Property, plant and equipment – net		512.7	495.4
Deferred tax assets – net	[1],[2]	180.9	163.3
Intangible assets – net		29.7	30.5
Goodwill		37.2	37.2
Other assets	[1]	20.7	19.6
Total		1,421.6	1,247.6
Current liabilities:
Accounts payable		72.3	76.7
Accrued salaries, wages and related expenses		36.4	39.8
Other accrued liabilities		44.2	52.7
Short-term capital leases		0.1	0.1
Total current liabilities		153.0	169.3
Net liabilities of Salaried VEBA		18.5	19.0
Deferred tax liabilities		2.2	2.1
Long-term liabilities		71.4	87.5
Long-term debt	[1]	368.2	194.6
Total liabilities		613.3	472.5
Commitments and contingencies
Stockholders' equity:
Preferred stock, 5,000,000 shares authorized at both June 30, 2016 and December 31, 2015; no shares were issued and outstanding at June 30, 2016 and December 31, 2015		0.0	0.0
Common stock, par value $0.01, 90,000,000 shares authorized at both June 30, 2016 and at December 31, 2015; 22,331,071 shares issued and 17,984,605 shares outstanding at June 30, 2016; 22,291,180 shares issued and 18,053,747 shares outstanding at December 31, 2015		0.2	0.2
Additional paid in capital	[2]	1,041.2	1,037.3
Retained earnings	[2]	51.9	15.8
Treasury stock, at cost, 4,346,466 shares at June 30, 2016 and 4,237,433 shares at December 31, 2015, respectively		(255.1)	(246.5)
Accumulated other comprehensive loss		(29.9)	(31.7)
Total stockholders' equity		808.3	775.1
Total		$ 1,421.6	$ 1,247.6

[1] See Note 1 for discussion of our adoption of ASU 2015-03, ASU 2015-15 and ASU 2015-17 (as defined in Note 1).

[2] See Note 4 and Note 6 for discussion of our adoption of ASU 2016-09 (as defined in Note 1).