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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