Commitments and Contingencies (Details) (USD $) In Thousands	Jun. 30, 2011
Minimum future rental payments on non-cancelable leases
2011 (six months remaining)	$ 909
2012	1,818
2013	1,818
2014	1,909
2015	1,909
Thereafter	$ 289,897

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Contractually required rental payments on leases meeting the criteria for capitalization, due within one year of the balance sheet date.