Discontinued Operations (Details Textual) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2008
Discontinued Operations (Textual) [Abstract]
Pre-tax operating loss from discontinued operations is an impairment charge		$ 2.7
Pre-tax operating loss from discontinued operations losses on the disposal of the assets and liabilities	0.2	2.3
Provision of pre-tax operating loss from discontinued operations			4.4
Settlement of Contingent Liabilities		6.1
Net book value of assets and write-off of goodwill related to sale		$ 4.0