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Consolidated Statements of Financial Condition - USD ($)
Dec. 31, 2018
Dec. 31, 2017
Assets    
Investment in Graham Alternative Investment Trading LLC, at fair value $ 27,978,759 $ 37,181,465
Redemptions receivable from Graham Alternative Investment Trading LLC 182,935 102,320
Total assets 28,161,694 37,283,785
Liabilities:    
Redemptions payable 182,935 102,320
Total liabilities 182,935 102,320
Members' capital:    
Members' capital 27,978,759 37,181,465
Total liabilities and members' capital 28,161,694 37,283,785
Class 0 Units [Member]    
Members' capital:    
Members' capital 16,801,362 23,163,675
Class 2 Units [Member]    
Members' capital:    
Members' capital $ 11,177,397 $ 14,017,790