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Schedule II - Valuation and Qualifying Accounts (Tables)
 12 Months Ended
Dec. 31, 2014
Valuation and Qualifying Accounts [Abstract]  
Schedule Of Valuation And Qualifying Accounts
(In thousands)
Balance at
Beginning of
Period
 
Charged to
Costs and
Expenses
 
Write-offs
(Recoveries)
of Doubtful
Accounts
 
Balance at
End of
Period
Year ended December 31, 2014:
 
 
 
 
 
 
 
Allowance for doubtful accounts
$
9,939

 
$
206

 
$
128

 
$
10,017

Year ended December 31, 2013:
 
 
 
 
 
 
 
Allowance for doubtful accounts
$
10,528

 
$
15

 
$
604

 
$
9,939

Year ended December 31, 2012:
 
 
 
 
 
 
 
Allowance for doubtful accounts
$
10,154

 
$
478

 
$
104

 
$
10,528