Restructuring (Details Textuals) (USD $) In Millions	6 Months Ended
	Jun. 30, 2011
Future Year One [Member]
Effects on Future Earnings and Cash Flows Resulting from Exit Plan [Line Items]
Additional cash payment related to restructuring activity	$ 4.3
Future Year Two [Member]
Effects on Future Earnings and Cash Flows Resulting from Exit Plan [Line Items]
Additional cash payment related to restructuring activity	4.2
Future Year Three [Member]
Effects on Future Earnings and Cash Flows Resulting from Exit Plan [Line Items]
Additional cash payment related to restructuring activity	$ 0.4