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Long Term Debt (Details Textual) (USD $)
In Millions, except Share data, unless otherwise specified
 1 Months Ended 6 Months Ended 1 Months Ended 6 Months Ended
Mar. 31, 2011
Jun. 30, 2012
Jun. 30, 2012
Working Capital Revolver Loan [Member]
May 26, 2011
Secured Term Loan [Member]
Jun. 30, 2012
Secured Term Loan [Member]
Mar. 29, 2011
Secured Term Loan [Member]
Jun. 30, 2012
Other long-term debt [Member]
Jun. 30, 2012
5.5% senior subordinated notes due 2012 [Member]
Jun. 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              
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              
Remaining borrowing capacity of revolving credit facility     48.6              
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        
Modified principal amount of secured loan           60        
Amended additional principal amount of secured loan       15            
Amended principal amount of secured loan       75            
Periodic principal payment of secured loan         0.9          
Interest and final balloon payment of secured loan         56.3          
Secured term loan 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     262   68          
Carrying value of restricted net assets         76          
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   4.03%         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%
Long-Term Debt (Textual) [Abstract]                    
Principal amounts converted $ 24.4                  
Shares of LSB common stock issued 888,160