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Subsequent Events - Rentech Mergers (Details) - USD ($)
1 Months Ended
Apr. 01, 2016
Mar. 31, 2016
Mar. 14, 2016
Subsequent Event [Line Items]      
Common units purchased   400,000  
Disposed of by Sale | East Dubuque      
Subsequent Event [Line Items]      
Percentage of subsidiary sold     100.00%
Subsequent event | Senior Notes | Second Lien Notes due 2021 | East Dubuque      
Subsequent Event [Line Items]      
Aggregate principal amount $ 320,000,000.0    
Stated interest rate (as a percent) 6.50%    
Period to repurchase debt subsequent to merger 90 days    
Redemption price, as a percentage 101.00%    
Subsequent event | Secured Debt | Line of Credit | East Dubuque      
Subsequent Event [Line Items]      
Borrowing capacity $ 50,000,000.0    
Subsequent event | Secured Debt | Line of Credit | Wells Fargo Credit Agreement | East Dubuque      
Subsequent Event [Line Items]      
Borrowing capacity 50,000,000.0    
Subsequent event | Secured Debt | Line of Credit | Wells Fargo Credit Agreement | CVR Partners, LP      
Subsequent Event [Line Items]      
Repayments of debt 49,400,000    
Subsequent event | Letter of Credit | Line of Credit | Wells Fargo Credit Agreement | East Dubuque      
Subsequent Event [Line Items]      
Borrowing capacity $ 10,000,000    
Subsequent event | East Dubuque Merger | East Dubuque      
Subsequent Event [Line Items]      
Unit consideration received per outstanding common unit 1.04    
Cash consideration received per outstanding common unit $ 2.57    
Subsequent event | East Dubuque Merger | CVR Partners, LP      
Subsequent Event [Line Items]      
Number of shares issued 40,200,000    
Cash consideration $ 99,200,000