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Other Matters (Details) (USD $)
3 Months Ended 6 Months Ended 3 Months Ended
Jun. 30, 2011
Jun. 30, 2011
Jun. 30, 2010
Jun. 30, 2011
CIGS
Jul. 28, 2011
CIGS
Solar Asset Impairment and Related Charges          
Number of employees expected to be impacted         80
Asset impairment and related charges       $ 50,700,000  
Asset impairment charges 6,211,000 6,211,000   6,211,000  
Inventory write-offs 33,375,000 33,375,000   33,375,000  
Charge to settle contracts $ 11,125,000 $ 11,125,000 $ (179,000) $ 11,125,000