Summary of Significant Accounting Policies (Details 2) (USD $)	3 Months Ended	9 Months Ended
Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Summary of Significant Accounting Policies
Impairment loss related to goodwill	$ 0	$ 0	$ 0	$ 0
Goodwill	41,191,000		41,191,000		41,191,000
Acquisition of Investment in Real Estate
Impairment loss related to intangible assets	0	0	0	0
Recoverability of Long-Lived Assets
Impairment of long-lived assets	$ 0	$ 0	$ 0	$ 0

Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions.

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+ Details

- Definition

Loss recognized during the period that results from the write-down of goodwill after comparing the implied fair value of reporting unit goodwill with the carrying amount of that goodwill. Goodwill is assessed at least annually for impairment.

+ References

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+ Details

- Definition

The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale).

+ References

+ Details