Commitments and Contingencies (Details 2) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012
Future minimum lease payments under the Company's current leases
2013	$ 20,423
2014	21,110
2015	20,344
2016	37,336
2017	18,589
Thereafter	1,221,758
Operating lease obligations
2013	17,996
2014	18,443
2015	18,390
2016	18,182
2017	17,668
Thereafter	1,178,392
Capital lease obligations
2013	2,427
2014	2,667
2015	1,954
2016	19,154
2017	921
Thereafter	43,366
Imputed interest on capital leases	$ 35,728

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