Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies - Solar Tariff Contingency (Details)

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Commitments and Contingencies - Solar Tariff Contingency (Details) (Solar Tariff Contingency [Member], USD $)
In Millions, unless otherwise specified
1 Months Ended
May 31, 2012
Jun. 30, 2012
Loss Contingencies [Line Items]    
Countervailing duty rate 3.61%  
Enforcement retroactive period from date of preliminary determination 90 days  
Estimated solar tariff duties   $ 8.7
Maximum [Member]
   
Loss Contingencies [Line Items]    
Anti-dumping duty rate 249.96%