Intangible Assets, Other Assets, Net and Goodwill (Details 4) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Finite-Lived Intangible Assets [Line Items]
Deferred financing costs, gross	13,174	9,432
Accumulated amortization, deferred financing costs	5,523	3,922
Deferred financing costs, net	7,651	5,510
Other assets, gross	9,483	8,071
Accumulated amortization of other assets	12	9
Other assets, net	9,471	8,062
Total other assets gross	22,657	17,503
Total other assets accumulated amortization	5,535	3,931
Total other assets, net	17,122	13,572
Financing [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (In Years)	5	5
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (In Years)	0	0