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Long-Term Debt (Tables)
 3 Months Ended
Mar. 31, 2012
Long-Term Debt [Abstract]  
Long-term debt
                 
    March 31,
2012		     December 31,
2011		  
    (In thousands)  

$300 million floating rate revolving credit facility, due August 2016

   $ 47,000     $ —    

5.55% senior notes, with semi-annual interest payments in June and December, maturing June 2013

     35,000       35,000  

4.91% senior notes, with semi-annual interest payments in June and December, with annual principal payments in June, maturing in June 2018

     32,317       32,317  

8.38% senior notes, with semi-annual interest payments in March and September, with scheduled principal payments beginning March 2013, maturing in March 2019

     150,000       150,000  

5.05% senior notes, with semi-annual interest payments in January and July, with annual principal payments in July, maturing in July 2020

     69,230       69,230  

5.31% utility local improvement obligation, with annual principal and interest payments, maturing in March 2021

     1,731       1,922  

5.55% senior notes, with semi-annual interest payments in June and December, with annual principal payments in June, maturing in June 2023

     33,600       33,600  

4.73% senior notes, with semi-annual interest payments in June and December, with scheduled principal payments beginning December 2014, maturing in December 2023

     75,000       75,000  

5.82% senior notes, with semi-annual interest payments in March and September, with annual principal payments in March, maturing in March 2024

     180,000       195,000  

8.92% senior notes, with semi-annual interest payments in March and September, with scheduled principal payments beginning March 2014, maturing in March 2024

     50,000       50,000  

5.03% senior notes, with semi-annual interest payments in June and December, with scheduled principal payments beginning December 2014, maturing in December 2026

     175,000       175,000  

5.18% senior notes, with semi-annual interest payments in June and December, with scheduled principal payments beginning December 2014, maturing in December 2026

     50,000       50,000  
   

 

 

    

 

 

  

Total debt

     898,878       867,069  

Less – current portion of long term debt

     (52,230 )      (30,801 ) 
   

 

 

    

 

 

  

Long-term debt

   $ 846,648     $ 836,268  
   

 

 

    

 

 

  
Principal payments due
                         
    Senior Notes     Credit Facility     Total  
    (In thousands)  

Remainder of 2012

   $ 15,609     $ —       $ 15,609  

2013

     87,230       —         87,230  

2014

     80,983       —         80,983  

2015

     80,983       —         80,983  

2016

     80,983       47,000       127,983  

Thereafter

     506,090       —         506,090  
   

 

 

    

 

 

    

 

 

  
    $ 851,878     $ 47,000     $ 898,878