Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies (Details)

v2.4.0.6
Commitments and Contingencies (Details) (West Gude Drive [Member], USD $)
In Millions, unless otherwise specified
Dec. 31, 2012
West Gude Drive [Member]
 
Loss Contingencies [Line Items]  
Letters of Credit Outstanding, Amount $ 0.8