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Other Assets and Accounts Payable and Other Liabilities - Schedule of Other Assets (Detail) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2012 | Dec. 31, 2011
--- | --- | ---
Other Assets [Line Items] |  |
Prepaid expenses | $ 2,329 | $ 3,819
Security deposits | 2,755 | 2,541
Miscellaneous other assets | 24 | 97
Cost method investment |  | 250
Furniture, equipment and leasehold improvements, net | 2,273 | 3,373
Intangible assets | 332 | 538
Equity method affiliates | 1,910 | 6,076
Other assets | $ 9,623 | $ 16,694

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