XML 103 R72.htm IDEA: XBRL DOCUMENT v3.6.0.2
Variable Interest Entities (Details)
 7 Months Ended 12 Months Ended
Feb. 01, 2017
USD ($)
Feb. 01, 2016
USD ($)
Jan. 31, 2016
USD ($)
Jul. 17, 2014
USD ($)
May 30, 2014
Oct. 08, 2013
USD ($)
Jul. 17, 2014
USD ($)
Dec. 31, 2016
USD ($)
lease
investor
MW
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Feb. 21, 2017
USD ($)
Jul. 19, 2016
USD ($)
May 31, 2016
MW
Apr. 30, 2016
USD ($)
Jan. 15, 2016
lease
MW
Jan. 15, 2015
lease
Dec. 31, 1986
lease
Dec. 31, 1985
lease
Variable Interest Entity, Statement Of Operation [Abstract]                                    
Earnings attributable to non-controlling interest               $ 14,519,000 $ 14,910,000 $ 14,127,000                
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities, Net [Abstract]                                    
Current assets               378,039,000 385,570,000                  
Total assets               6,471,080,000 6,009,328,000 5,790,237,000                
Current liabilities               805,108,000 641,120,000                  
Owners’ equity – non-controlling interest               $ 68,920,000 71,407,000                  
Public Service Company of New Mexico [Member]                                    
Variable Interest Entity [Line Items]                                    
Number of different institutional investors of trust lessors | investor               5                    
Accrued lease payments               $ 26,497,000                    
Variable Interest Entity, Statement Of Operation [Abstract]                                    
Earnings attributable to non-controlling interest               14,519,000 14,910,000 14,127,000                
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities, Net [Abstract]                                    
Current assets               314,245,000 357,757,000                  
Total assets               4,867,546,000 4,599,344,000                  
Current liabilities               457,361,000 316,921,000                  
Owners’ equity – non-controlling interest               68,920,000 71,407,000                  
Public Service Company of New Mexico [Member] | Delta [Member]                                    
Variable Interest Entity [Line Items]                                    
Payment for fixed charges             $ 3,500,000                      
Payment for variable charges             600,000                      
Payments to acquire businesses, net       $ 22,800,000                            
Project financing debt, amount at closing       14,600,000     14,600,000                      
Recorded plant in service       58,100,000     58,100,000                      
Accumulated depreciation       23,500,000     23,500,000                      
Current assets       3,600,000     3,600,000                      
Deferred charges       3,400,000     3,400,000                      
Current liabilities       300,000     300,000                      
Non-current regulatory liabilities       $ 3,400,000     $ 3,400,000                      
Public Service Company of New Mexico [Member] | Palo Verde Nuclear Generating Station [Member]                                    
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities, Net [Abstract]                                    
Variable Interest Entities, Other financial obligations due to beneficial owner               0                    
Variable interest entities, Exposure beyond contractual lease payments               0                    
Variable interest entities, Additional rights to assets beyond use of leased assets               0                    
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets               $ 0                    
Public Service Company of New Mexico [Member] | Valencia [Member]                                    
Variable Interest Entity [Line Items]                                    
Number of megawatts purchased (in megawatts) | MW               158                    
Power plant total construction costs               $ 90,000,000                    
Payment for fixed charges               19,300,000 19,200,000 19,100,000                
Payment for variable charges               $ 1,100,000 1,600,000 1,200,000                
Purchase price, percentage of the book value reduced by related indebtedness               50.00%                    
Purchase price, percentage of fair market value               50.00%                    
Number of days to agreement on fair market value           60 days                        
Purchase price as determined by appraisal process           $ 85,000,000                        
Long term contract option to purchase, approximate approval period               15 months                    
Long term contract option to purchase, ownership percentage         50.00%                          
Number of years the operating licenses for plants were extended               20 years                    
Variable Interest Entity, Statement Of Operation [Abstract]                                    
Operating revenues               $ 20,371,000 20,687,000 20,247,000                
Operating expenses               (5,852,000) (5,777,000) (6,120,000)                
Earnings attributable to non-controlling interest               14,519,000 14,910,000 $ 14,127,000                
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities, Net [Abstract]                                    
Current assets               2,551,000 2,588,000                  
Net property, plant and equipment               66,947,000 69,784,000                  
Total assets               69,498,000 72,372,000                  
Current liabilities               578,000 965,000                  
Owners’ equity – non-controlling interest               $ 68,920,000 71,407,000                  
Public Service Company of New Mexico [Member] | Valencia [Member] | Maximum [Member]                                    
Variable Interest Entity [Line Items]                                    
Option to purchase a percentage of the plant or VIE (up to )           50.00%   50.00%                    
Public Service Company of New Mexico [Member] | PVNGS [Member] | Palo Verde Nuclear Generating Station [Member]                                    
Variable Interest Entity [Line Items]                                    
Accrued lease payments               $ 8,300,000 $ 18,400,000                  
Public Service Company of New Mexico [Member] | Delta [Member]                                    
Variable Interest Entity [Line Items]                                    
Period of long term contract for purchase of electric power, fixed costs               20 years                    
NM Capital [Member] | Coal Supply [Member] | San Juan Generating Station [Member]                                    
Variable Interest Entity [Line Items]                                    
Loan agreement   $ 125,000,000.0 $ 125,000,000.0                              
Issuance in letters of credit     30,300,000                 $ 30,300,000   $ 40,000,000        
NM Capital [Member] | Coal Supply [Member] | San Juan Coal Company, Westmoreland [Member]                                    
Variable Interest Entity [Line Items]                                    
Amount outstanding     $ 125,000,000         $ 95,000,000                    
Interest receivable               $ 1,300,000                    
NM Capital [Member] | Coal Supply [Member] | San Juan Coal Company, Westmoreland [Member] | Subsequent Event [Member]                                    
Variable Interest Entity [Line Items]                                    
Amount outstanding                     $ 85,400,000              
Scheduled principal payment $ 9,600,000                                  
Palo Verde Nuclear Generating Station, Unit 1 Leases [Member] | Public Service Company of New Mexico [Member]                                    
Variable Interest Entity [Line Items]                                    
Number of leases | lease                               4   4
Palo Verde Nuclear Generating Station, Unit 2 Leases [Member] | Public Service Company of New Mexico [Member]                                    
Variable Interest Entity [Line Items]                                    
Number of megawatts purchased (in megawatts) | MW                         64.1   64.1      
Number of leases | lease               3             1   4  
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities, Net [Abstract]                                    
Number of leases under which assets were purchased | lease                             3