XML 61 R45.htm IDEA: XBRL DOCUMENT v2.4.1.9
Note 3 - Inventories (Details) - Inventories (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Raw materials:    
Raw materials $ 153,607us-gaap_InventoryRawMaterialsNetOfReserves $ 154,691us-gaap_InventoryRawMaterialsNetOfReserves
Total 196,556us-gaap_InventoryNet 189,680us-gaap_InventoryNet
Drilling fluids [Member]    
Raw materials:    
Raw materials 152,076us-gaap_InventoryRawMaterialsNetOfReserves
/ us-gaap_PublicUtilitiesInventoryAxis
= nr_DrillingFluidsMember		 153,901us-gaap_InventoryRawMaterialsNetOfReserves
/ us-gaap_PublicUtilitiesInventoryAxis
= nr_DrillingFluidsMember
Mats [Member]    
Raw materials:    
Raw materials 1,531us-gaap_InventoryRawMaterialsNetOfReserves
/ us-gaap_PublicUtilitiesInventoryAxis
= nr_MatsMember		 790us-gaap_InventoryRawMaterialsNetOfReserves
/ us-gaap_PublicUtilitiesInventoryAxis
= nr_MatsMember
Finished goods- mats 1,978us-gaap_InventoryFinishedGoodsNetOfReserves
/ us-gaap_PublicUtilitiesInventoryAxis
= nr_MatsMember		 914us-gaap_InventoryFinishedGoodsNetOfReserves
/ us-gaap_PublicUtilitiesInventoryAxis
= nr_MatsMember
Blended Drilling Fluids Components [Member]    
Raw materials:    
Blended drilling fluids components $ 40,971us-gaap_InventoryPartsAndComponentsNetOfReserves
/ us-gaap_PublicUtilitiesInventoryAxis
= nr_BlendedDrillingFluidsComponentsMember		 $ 34,075us-gaap_InventoryPartsAndComponentsNetOfReserves
/ us-gaap_PublicUtilitiesInventoryAxis
= nr_BlendedDrillingFluidsComponentsMember