v2.4.0.6
Fair Value of Financial Instruments and Non-Financial Assets and Liabilities (Details) (USD $)
In Thousands, unless otherwise specified
Jul. 08, 2011
Jan. 19, 2011
Jun. 30, 2012
Fair Value, Measurements, Recurring [Member]
Dec. 31, 2011
Fair Value, Measurements, Recurring [Member]
Jun. 30, 2012
Fair Value, Measurements, Recurring [Member]
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Dec. 31, 2011
Fair Value, Measurements, Recurring [Member]
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Jun. 30, 2012
Fair Value, Measurements, Recurring [Member]
Significant Other Observable Inputs (Level 2) [Member]
Dec. 31, 2011
Fair Value, Measurements, Recurring [Member]
Significant Other Observable Inputs (Level 2) [Member]
Jun. 30, 2012
Fair Value, Measurements, Recurring [Member]
Unobservable Inputs (Level 3) [Member]
Dec. 31, 2011
Fair Value, Measurements, Recurring [Member]
Unobservable Inputs (Level 3) [Member]
Fair value of assets and liabilities                    
Firm commitment $ (700) $ 600 $ 3,432 $ 3,807       $ 3,432 $ 3,807      
Derivative liability:                    
Foreign exchange contract     $ (3,432) $ (3,954)       $ (3,432) $ (3,954)