9876543210
9876543210
2008-01-31
2008-12-31
local:atm
6-K
Concept Label
Concept Value
DerivedPressureItemTypeConcept
Document Type
6-K
Entity Registrant Name
ng_DerivedPressureItemTypeConcept_xatm
Amendment Flag
false
Document Period End Date
2008-12-31
Current Fiscal Year End Date
--12-31