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Commitments and Contingencies - Additional Information (Detail) (USD $)
 1 Months Ended 3 Months Ended 3 Months Ended
Apr. 30, 2013
Mar. 31, 2014
Mar. 31, 2014
Insurance Claims [Member]
Mar. 31, 2014
Pryor Chemical Company[Member]
Cases
Apr. 19, 2013
Pryor Chemical Company[Member]
Cases
Mar. 31, 2014
Hallowell Facility [Member]
Subsidiary
Mar. 31, 2014
Chemical Business [Member]
Plant
Facility
Mar. 31, 2014
Climate Control Business [Member]
Mar. 31, 2014
El Dorado Facility [Member]
Mar. 31, 2014
El Dorado Facility [Member]
Nitric Acid Plant [Member]
Mar. 31, 2014
El Dorado Facility [Member]
Ammonia Plant [Member]
Mar. 31, 2014
El Dorado Facility [Member]
Minimum [Member]
Nitric Acid Plant [Member]
Mar. 31, 2014
El Dorado Facility [Member]
Minimum [Member]
Ammonia Plant [Member]
Mar. 31, 2014
El Dorado Facility [Member]
Maximum [Member]
Nitric Acid Plant [Member]
Mar. 31, 2014
El Dorado Facility [Member]
Maximum [Member]
Ammonia Plant [Member]
Mar. 31, 2014
Amended Ammonium Nitrate Supply Agreement [Member]
Orica International [Member]
Mar. 31, 2014
Amended Ammonium Nitrate Supply Agreement [Member]
Orica International [Member]
Minimum [Member]
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Commitments And Contingencies [Line Items]                                  
Estimated range of project costs to construct plant                       $ 115,000,000 $ 250,000,000 $ 125,000,000 $ 300,000,000    
Project costs capitalized                   60,000,000 53,000,000            
Current purchase agreement quantity with Orica International                                 240,000
Ammonium nitrate supply agreement maturity date                               Apr. 09, 2015  
Notice of termination                               Required notice of termination of one year  
Accrued liabilities for environmental matters   1,278,000                              
Operating agreement maturity date                 Dec. 31, 2053                
Penalty related to discharge water permit   100,000                              
Number of nitric acid production facilities             9                    
Plants compliant with Clean Air Act             3                    
Minimum range of estimated capital cost to meet Clean Air Act emission rates             2,000,000                    
Maximum range of estimated capital cost to meet Clean Air Act emission rates             3,000,000                    
Plants requiring capital investment to achieve Clean Air Act compliance             5                    
Reforestation mitigation estimated project costs             150,000                    
Amount of civil penalty to be paid             725,000                    
Amount of civil penalty       100,000                          
Number of alleged non-compliance issues         14                        
Number of alleged violation resolved through a global settlement       3                          
Number of alleged violations resolved through civil penalty payment       11                          
Number of subsidiaries under Chemical Business that sold their operating assets           2                      
Insurance coverage of general liability risks 100,000,000                                
Product liability deductible per claim 250,000             250,000                  
Accrued general liability insurance claims     $ 250,000