Income Taxes (Narrative) (Details) (USD $) In Millions, unless otherwise specified				12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2011 Federal [Member]	Dec. 31, 2011 State and Local Jurisdiction [Member]
Income Taxes [Line Items]
Accrued interest related to uncertain tax positions	$ 0.5	$ 0.8	$ 0.9
Accrued penalties related to uncertain tax positions	0.2	0.4	0.2
Unrecognized tax benefits that would affect our effective tax rate	5.0	5.8	4.4
Unrecognized tax benefits possible change, estimated range, lower bound	0
Unrecognized tax benefits possible change, estimated range, upper bound	1.1
Loss carry forwards for U.S. federal	14.0	3.5
Loss carry forwards for non-U.S.	12.4	13.7
Operating loss carryforwards, expiration dates				2019 and 2030	2016 and 2030
Loss carryforwards, subject to expiration amount	0.7
Loss carryforwards, not subject to expiration amount	11.5
Foreign capital loss carry forward	1.1	1.3
Deferred tax assets, capital loss carryforwards	0.2	0.4
Operating loss and credit carry forwards	18.0	18.7
Operating loss carryforwards, valuation allowance	$ 0.3	$ 0.4