Commitments and Contingencies (Details 4) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2012
Commitments and Contingencies.
Initial term of non cancellable operating leases, minimum	1 year
Capital lease
2013	$ 1,555
2014	1,705
2015	1,743
2016	1,857
2017	2,007
Thereafter	99,828
Total minimum lease payments	108,695
Less amount representing interest	(71,177)
Present value of net minimum lease payments	37,518
Non-cancellable operating leases
2013	37,431
2014	37,531
2015	37,757
2016	38,315
2017	38,561
Thereafter	1,482,791
Total minimum lease payments	$ 1,672,386

Represents the initial minimum term of the non cancellable operating leases.

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Amount of minimum lease payments for capital leases.

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Amount of minimum lease payments maturing in the next fiscal year following the latest fiscal year for capital leases.

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Amount of minimum lease payments maturing in the fifth fiscal year following the latest fiscal year for capital leases.

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Amount of minimum lease payments maturing in the forth fiscal year following the latest fiscal year for capital leases.

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Amount of minimum lease payments maturing in the third fiscal year following the latest fiscal year for capital leases.

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Amount of minimum lease payments maturing in the second fiscal year following the latest fiscal year for capital leases.

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Amount of minimum lease payments maturing after the fifth fiscal year following the latest fiscal year for capital leases.

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Amount necessary to reduce net minimum lease payments to present value for capital leases.

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Present value of minimum lease payments for capital leases net of executory costs, including amounts paid by the lessee to the lessor for insurance, maintenance and taxes.

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Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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