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COMMITMENTS AND CONTINGENCIES (Details) - USD ($)
Jun. 27, 2013
Mar. 31, 2017
Dec. 31, 2016
Commitments      
Amount of outstanding letters of credit and surety bonds   $ 115,200,000 $ 118,900,000
South Street Seaport Ground Lease [Member]      
Commitments      
Annual fixed rent $ 1,200,000    
Annual rent escalation rate (as a percent) 3.00%    
Additional annual rent payments to be made through the term of the lease $ 210,000