Statement of Consolidated Stockholders' Equity and Comprehensive Income (Unaudited) (USD $) In Millions, except Share data	Total		Common Stock	Additional Capital	Retained Earnings	Common Stock Owned by Union VEBA Subject to Transfer Restriction		Treasury Stock	Accumulated Other Comprehensive Income (Loss)
Beginning balance at Dec. 31, 2010	$ 912.2		$ 0.2	$ 987.1	$ 80.1	$ (84.6)		$ (72.3)	$ 1.7
Beginning balance, shares at Dec. 31, 2010	19,214,451		19,214,451
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	20.2	[1]			20.2
Net actuarial loss arising during the period, net of tax of $0	(0.1)								(0.1)
Unrealized loss on available for sale securities, net of tax of $0	(0.3)								(0.3)
Foreign currency translation adjustment, net of tax of $0	0.5								0.5
Comprehensive income	20.3
Sale of Union VEBA shares by the Union VEBA, net of tax of $24.7	40.8			9.1		31.7	[2]
Issuance of non-vested shares to employees			83,066
Issuance of common shares to directors, shares			3,750
Issuance of common shares to directors	0.2			0.2
Issuance of common shares to employees upon vesting of restricted stock units and performance shares			13,899
Repurchase of common stock to cover employees' tax withholdings upon vesting of non-vested shares	(1.1)			(1.1)
Repurchase of common stock to cover employees' tax withholdings upon vesting of non-vested shares, shares			(23,445)
Cash dividends on common stock ($0.72 per share)	(14.1)				(14.1)
Amortization of unearned equity compensation	3.8			3.8
Ending balance at Sep. 30, 2011	$ 962.1		$ 0.2	$ 999.1	$ 86.2	$ (52.9)		$ (72.3)	$ 1.8
Ending balance, shares at Sep. 30, 2011	19,291,721		19,291,721

[1] The combined results for the quarter and nine months ended September 30, 2011 are as presented in the Statement of Consolidated Income for such periods, reflecting the January 1, 2011 effective date of the Alexco acquisition (see Note 1).

[2] At $24.02 per share reorganization value.