Quarterly report pursuant to Section 13 or 15(d)

公允价值计量(详情)

v2.4.0.8
公允价值计量(详情)(美元)
除非另有说明,单位为千
9月结束
9月. 30, 2013
9月. 30, 2012
12月. 31, 2012
Fair Value, 资产 and 负债 Measured on Recurring and Nonrecurring Basis [Line Items]      
资产 $ 1,633   $ 664
资产退休义务资本化 1,771 1,711  
Level 1 [Member] | Diamondback Energy LLC [Member]
     
Fair Value, 资产 and 负债 Measured on Recurring and Nonrecurring Basis [Line Items]      
Diamondback的股权投资 242,174    
Level 1 [Member] | Fixed Price Swaps [Member]
     
Fair Value, 资产 and 负债 Measured on Recurring and Nonrecurring Basis [Line Items]      
资产 0    
负债 0    
Level 2 [Member] | Diamondback Energy LLC [Member]
     
Fair Value, 资产 and 负债 Measured on Recurring and Nonrecurring Basis [Line Items]      
Diamondback的股权投资 0    
Level 2 [Member] | Fixed Price Swaps [Member]
     
Fair Value, 资产 and 负债 Measured on Recurring and Nonrecurring Basis [Line Items]      
资产 1,760    
负债 5,770    
三级[会员]
     
Fair Value, 资产 and 负债 Measured on Recurring and Nonrecurring Basis [Line Items]      
资产退休义务资本化 1,800    
三级[会员] | Diamondback Energy LLC [Member]
     
Fair Value, 资产 and 负债 Measured on Recurring and Nonrecurring Basis [Line Items]      
Diamondback的股权投资 0    
三级[会员] | Fixed Price Swaps [Member]
     
Fair Value, 资产 and 负债 Measured on Recurring and Nonrecurring Basis [Line Items]      
资产 0    
负债 $ 0