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Fees and Related Party Transactions (Tables)
12 Months Ended
Dec. 31, 2015
Fees and Related Party Transactions [Abstract]  
Sponsor fees
For the years ended December 31, 2015 and 2014, each Class of GAIT other than Class M paid the Manager a sponsor fee (the “Sponsor Fee”) at an annual rate of the Net Asset Value specified in the table below. The Sponsor Fee is payable monthly in arrears calculated as of the last business day of each month in the same manner as the Advisory Fee.

Class
 
Annual Rate
   
Class 0
 
0.75 %
Class 2
 
2.75 %