Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 47.8	$ 40.0
Accounts receivable, net	213.5	202.7
Inventories	149.2	153.8
Prepaid expenses	15.3	17.0
Assets held-for-sale	13.4	0.2
Income taxes receivable	12.7	7.0
Deferred income taxes	7.8	7.0
Other	0.8	1.8
Total current assets	460.5	429.5
Property, plant, equipment, and mineral rights and reserves:
Land	10.7	13.0
Mineral rights	5.0	48.6
Depreciable assets	573.2	552.0
Gross property, plant and equipment	588.9	613.6
Less: accumulated depreciation and depletion	325.3	311.7
Net property, plant and equipment	263.6	301.9
Goodwill	68.7	70.2
Intangible assets, net	27.9	33.9
Investment in and advances to affiliates and joint ventures	28.0	27.8
Available-for-sale securities	0	14.6
Deferred income taxes	1.9	7.4
Other assets	28.1	25.3
Total noncurrent assets	418.2	481.1
Total Assets	878.7	910.6
Current liabilities:
Accounts payable	52.0	51.1
Accrued income taxes	9.1	5.0
Accrued liabilities	59.9	58.4
Total current liabilities	121.0	114.5
Noncurrent liabilities:
Long-term debt	249.1	248.8
Pension liabilities	26.6	37.5
Deferred income taxes	3.2	12.8
Deferred compensation	12.0	9.4
Other long-term liabilities	20.3	22.5
Total noncurrent liabilities	311.2	331.0
Equity:
Common stock, par value $.01 per share, 100,000,000 shares authorized; 32,468,752 and 32,184,110 shares issued in 2013 and 2012, respectively	0.3	0.3
Additional paid in capital	117.1	105.1
Retained earnings	359.5	355.2
Accumulated other comprehensive income (loss)	(26.7)	0.8
Stockholders' equity before treasury stock	450.2	461.4
Noncontrolling interest	(3.7)	3.7
Total equity	446.5	465.1
Total liabilities and equity	$ 878.7	$ 910.6