Summary of Significant Accounting Policies (Details 1)	12 Months Ended
	Dec. 31, 2011
Deferred Financing Costs [Member]
Identifiable intangible and other assets that have finite lives are amortized over their estimated useful lives
Finite lived intangible assets and other assets estimated useful lives	Effective interest method
Customer Relationships [Member]
Identifiable intangible and other assets that have finite lives are amortized over their estimated useful lives
Finite lived intangible assets and other assets estimated useful lives	Straight-line method up to 12 years
Other [Member]
Identifiable intangible and other assets that have finite lives are amortized over their estimated useful lives
Finite lived intangible assets and other assets estimated useful lives	Straight-line method up to 10 years