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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 |  |  |  |  |  |  |  |  |

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