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Long Term Debt (Details Textual) (USD $) | 1 Months Ended |  |  | 9 Months Ended | 1 Months Ended | 9 Months Ended |  |  |  |
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Mar. 31, 2011 | Jan. 31, 2011 | Sep. 30, 2012 | Jul. 31, 2011 | Sep. 30, 2012 Working Capital Revolver Loan [Member] | May 26, 2011 Secured Term Loan [Member] | Sep. 30, 2012 Secured Term Loan [Member] | Mar. 29, 2011 Secured Term Loan [Member] | Sep. 30, 2012 Other long-term debt [Member] | Sep. 30, 2012 5.5% senior subordinated notes due 2012 [Member] | Sep. 30, 2011 5.5% senior subordinated notes due 2012 [Member] | Mar. 31, 2011 5.5% senior subordinated notes due 2012 [Member]
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Maximum amount of revolving credit facility |  |  |  |  | $ 50,000,000 |  |  |  |  |  |  |
Description of Interest rate of Revolving Credit Facility |  |  |  |  | Interest at a base rate (generally equivalent to the prime rate) plus .50% if borrowing availability is greater than $25 million, otherwise plus .75% (previously plus .50% only) or, at our option, accrues interest at LIBOR plus 1.50% if borrowing availability is greater than $25 million, otherwise plus 1.75% (previously plus 1.75% only). |  |  |  |  |  |  |
Line of credit facility, interest rate |  |  |  |  | 3.75% |  |  |  |  |  |  |
Letter of credit maximum capacity |  |  |  |  | 15,000,000 |  |  |  |  |  |  |
Remaining borrowing capacity of revolving credit facility |  |  |  |  | 48,400,000 |  |  |  |  |  |  |
Fees Expressed as percentage for unused letters of credit |  |  |  |  | 1.00% |  |  |  |  |  |  |
Fees expressed as percentage for unused revolving credit facility |  |  |  |  | 0.25% |  |  |  |  |  |  |
Original fees expressed as percentage for unused revolving credit facility |  |  |  |  | 0.375% |  |  |  |  |  |  |
Working capital revolver loan requirements |  |  |  |  | The Working Capital Revolver Loan continues to require ThermaClime to meet a minimum fixed charge coverage ratio of not less than 1.10 to 1 measured on an annual basis, but the maximum senior leverage coverage ratio of not greater than 4.50 to 1 and the EBITDA requirement of greater than $25 million financial covenants have been eliminated. |  |  |  |  |  |  |
Original principal amount of secured term loan |  |  |  |  |  |  |  | 50,000,000 |  |  |  |
Modified principal amount of secured loan |  |  |  |  |  |  |  | 60,000,000 |  |  |  |
Amended additional principal amount of secured loan |  |  |  |  |  | 15,000,000 |  |  |  |  |  |
Amended principal amount of secured loan |  |  |  |  |  | 75,000,000 |  |  |  |  |  |
Periodic principal payment of secured loan |  |  |  |  |  |  | 900,000 |  |  |  |  |
Interest and final balloon payment of secured loan |  |  |  |  |  |  | 56,300,000 |  |  |  |  |
Secured term loan variable interest Rate Basis |  |  |  |  |  |  | Three month Libor plus 300 basis points adjusted quarterly |  |  |  |  |
Borrowing interest rate basis spread |  |  |  |  |  |  | 3.00% |  |  |  |  |
Period for LIBOR |  |  |  |  |  |  | 3 months |  |  |  |  |
Carrying value of the pledged assets |  |  |  |  | 85,000,000 |  | 261,000,000 |  |  |  |  |
Carrying value of restricted net assets |  |  |  |  |  |  | 86,000,000 |  |  |  |  |
Secured term loan agreement requirements |  |  |  |  |  |  | Borrowers are also subject to a minimum fixed charge coverage ratio of not less than 1.10 to 1 and a maximum leverage ratio of not greater than 4.50 to 1 |  |  |  |  |
Percentage of principal amount as prepayment premium |  |  |  |  |  |  | 1.00% |  |  |  |  |
Weighted average interest rate of other debt |  |  | 3.96% |  |  |  |  |  | 6.84% |  |  |
Maturity date of original secured term loan |  |  |  |  |  |  | November 2, 2012 |  |  |  |  |
Maturity date of amended secured term loan |  |  |  |  |  |  | March 29, 2016 |  |  |  |  |
End date of prepayment premium period |  |  |  |  |  |  | Mar. 29, 2014 |  |  |  |  |
Debt instrument, interest rate |  |  |  |  |  |  |  |  |  | 5.50% | 5.50% | 5.50%
Working capital revolver loan amendment date |  |  |  |  | Apr. 04, 2012 |  |  |  |  |  |  |
Amended working capital revolver loan maturity date |  |  |  |  | Mar. 29, 2016 |  |  |  |  |  |  |
Amended working capital revolver loan maturity date conditional extension |  |  |  |  | Apr. 13, 2017 |  |  |  |  |  |  |
Long-Term Debt (Textual) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Principal amounts converted | $ 24,400,000 |  |  | $ 2,000,000 |  |  |  |  |  |  |  |
Shares of LSB common stock issued | 888,160 | 72,800 |  |  |  |  |  |  |  |  |  |

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- Definition Description of minimum financial levels (for example, tangible net worth and working capital) and achievement of certain financial ratios (for example, working capital ratio and debt service coverage ratio), and adherence to certain clauses which generally require or restrict certain actions (for example, entering into a debt arrangement with equal or greater seniority, and selling or discontinuing a certain business segment or material subsidiary) to be in compliance with the covenant clauses of the debt agreement. May also include a discussion of the adverse consequences that would result if the entity violates or fails to satisfy the covenants. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 2, 4 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823 + Details
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