Quarterly report pursuant to Section 13 or 15(d)

Leases (Details 2)

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Leases (Details 2) (Public Service Copmany of New Mexico [Member], USD $)
 3 Months Ended 29 Months Ended
Mar. 31, 2013
customer
Nov. 30, 2012
Apr. 01, 2015
Dec. 31, 2012
Oct. 31, 2012
Operating Leased Assets [Line Items]          
Lease termination date Apr. 01, 2015        
Number of customers served 500,000        
Sales lease back intangible asset amortized $ 1,100,000        
Semi annual rent payment 1,400,000        
Future minimum rent payment 1,400,000 2,400,000   2,100,000  
Percentage of ownership in Eastern Interconnect Project         40.00%
Compensation for FERC filing     April 1, 2015    
Proceeds from compensation for legal cost   100,000      
Incremental depreciation per quarter 393,000        
Future Expectations [Member]
          
Operating Leased Assets [Line Items]          
Fair value of lease option under agreement anticipated to be received $ 7,680,000