XML 114 R49.htm IDEA: XBRL DOCUMENT v2.4.0.6
Fair Value Of Financial Instruments (Tables)
12 Months Ended
Dec. 31, 2011
Fair Value Of Financial Instruments [Abstract]  
Fair Value Of Long-Term Debt
     December 31  
     2011      2010  
     Recorded
Amount
     Fair Value      Recorded
Amount
     Fair Value  
     (In thousands)  

Long-term debt

   $ 763,673       $ 819,854       $ 860,910       $ 879,511