Derivatives and Hedging Activities (Details Textual) (USD $) In Millions, unless otherwise specified	3 Months Ended							3 Months Ended	12 Months Ended			3 Months Ended
	Mar. 31, 2012	Dec. 31, 2011	Mar. 31, 2011	Mar. 31, 2012 12% Senior Notes due February 2014 [Member]	Dec. 31, 2011 12% Senior Notes due February 2014 [Member]	Mar. 31, 2012 5.625 % Senior Notes due July 2013 [Member]	Dec. 31, 2011 5.625 % Senior Notes due July 2013 [Member]	Mar. 31, 2012 Interest Rate Swap [Member]	Dec. 31, 2011 Interest Rate Swap [Member]	Mar. 31, 2012 Foreign Exchange Forward [Member]	Dec. 31, 2011 Foreign Exchange Forward [Member]	Mar. 31, 2012 Designated as Hedging Instrument [Member]	Dec. 31, 2011 Designated as Hedging Instrument [Member]	Mar. 31, 2011 Designated as Hedging Instrument [Member]
Derivatives And Hedging Activities (Textual) [Abstract]
Mark to market adjustment to record Increase or decrease in the carrying amount of the 12% and 5.625% Senior Notes								$ 1.9	$ 2.0
Increase (decrease) in interest expense due to interest rate swap												0.3	(1.0)	(1.0)
Increase (decrease) in carrying value due to interest rate swap													6
Estimated fair value of foreign currency forward contract, asset											15
Estimated fair value of foreign currency forward contract, liabilities										0.2
Derivatives and Hedging Activities (Additional Textual) [Abstract]
Interest rate on senior notes				12.00%	12.00%	5.625%	5.625%
Terminated an interest rate swap with notional amount interest rate swaps		7
Proceeds from termination of interest rate swap	$ 0		$ 1
Period of LIBOR to pay interest under interest rate Swap agreements	1 month
Period of LIBOR to pay interest on remaining interest rate Swap agreements	6 months
Maximum original maturity period of Foreign Currency Forward Contracts	less than 12 months