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Commitments and Contingencies (Details) (USD $)
 1 Months Ended 3 Months Ended 1 Months Ended 3 Months Ended 3 Months Ended
May 31, 2008
Mar. 31, 2012
Plant
Dec. 31, 2011
Jun. 30, 2011
Jul. 31, 2007
Class C Preferred Stock [Member]
Nov. 30, 2006
Class C Preferred Stock [Member]
Mar. 31, 2012
Class C Preferred Stock [Member]
Dec. 31, 2007
Class C Preferred Stock [Member]
Mar. 31, 2012
Insurance Claims [Member]
Mar. 31, 2012
Hallowell Facility [Member]
Entity
Mar. 31, 2012
Climate Control Business [Member]
Mar. 31, 2012
Chemical Business [Member]
Segment Reporting Information [Line Items]                        
Current portion of accrued and other liabilities   $ 30,022,000 $ 28,677,000             $ 100,000    
Accrued general liability insurance claims                 727,000      
Renewal period for discharge water permit                       5 years
Maximum penalty amount per day under Clean Air Act                       27,500
No. of nitric acid affected plant   10                    
Number of subsidiaries under chemical business that sold their operating assets                   2    
Product liability deductible per claim                     250,000  
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]                        
Class C Series 2 preferred stock             $ 3.25          
Maximum number of shares to be received under agreement           180,450            
Total number of shares held by Jayhawk Group           340,900            
Number of common shares for each convertible preferred stock               7.4        
Common stock issued on conversion         4.329              
Jayhawk Group asserted damage claim relating to preferred             12,000,000          
Commitments and Contingencies (Textual) [Abstract]                        
Purchase commitments of natural gas in mmbtu   1,500,000                    
Weighted average cost of natural gas per mmbtu   3.38                    
Total cost of natural gas in dollars   5,200,000                    
Weighted average market value of natural gas per mmbtu   2.27                    
Total market value of natural gas in dollars   3,500,000                    
Accrued losses on firm sales commitments (Rounded)   3,000,000                    
Month purchase commitment period ends for natural gas   Oct.-2012                    
Penalty related to discharge water permit       124,000                
Liability relating to discharge water permit   124,000                    
Capital cost in connection with construction of pipeline   4,000,000                    
Capitalized cost of construction of pipeline   1,300,000                    
Estimated share of the annual operating cost of pipeline, minimum   100,000                    
Estimated share of the annual operating cost of pipeline, maximum   150,000                    
Alleged discharge water permit violation settlement amount   100,000                    
Jayhawk Group's offer to settle litigation 100,000                      
Cumulative Jayhawk litigation expense   250,000                    
Product liability                         
Estimated EPA civil penalty liability   $ 100,000