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Commitments and Contingencies (Details) (USD $)
 1 Months Ended 6 Months Ended 1 Months Ended 6 Months Ended 6 Months Ended
May 31, 2008
Jun. 30, 2012
Dec. 31, 2011
Jul. 31, 2007
Class C Preferred Stock [Member]
Nov. 30, 2006
Class C Preferred Stock [Member]
Jun. 30, 2012
Class C Preferred Stock [Member]
Dec. 31, 2007
Class C Preferred Stock [Member]
Jun. 30, 2012
Insurance Claims [Member]
Jun. 30, 2012
Hallowell Facility [Member]
Entity
Jun. 30, 2012
Climate Control Business [Member]
Jun. 30, 2012
Chemical Business [Member]
Plant
Segment Reporting Information [Line Items]                      
Maximum penalty amount per day under Clean Air Act                     $ 27,500
Number of nitric acid affected plants                     10
Number of subsidiaries under chemical business that sold their operating assets                 2    
Current portion of accrued and other liabilities   25,407,000 28,677,000           208,000    
Accrued general liability insurance claims               755,000      
Renewal period for discharge water permit                     5 years
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 stock exchange           12,000,000          
Commitments and Contingencies (Textual) [Abstract]                      
Purchase commitments of natural gas in mmbtu   700,000                  
Weighted average cost of natural gas per mmbtu   3.42                  
Total cost of natural gas in dollars   2,500,000                  
Weighted average market value of natural gas per mmbtu   2.82                  
Total market value of natural gas in dollars   2,000,000                  
Month purchase commitment period ends for natural gas   October 2012                  
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                  
Estimated EPA civil penalty liability   100,000                  
Jayhawk Group's offer to settle litigation 100,000                    
Cumulative Jayhawk litigation expense   $ 250,000