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Schedule II - Valuation And Qualifying Accounts And Reserves
 12 Months Ended
Dec. 31, 2014
Valuation and Qualifying Accounts [Abstract]  
Valuation And Qualifying Accounts And Reserves
Allowance for Doubtful Accounts:
Description
Balance at
Beginning
of Period
 
Additions
Charged to
Costs &
Expenses
 
Deductions
& Net
Write-Offs
 
Balance at
End of
Period
 
(In thousands)
Year ended December 31, 2014
$
5,342

 
$
3,562

 
$
(3,865
)
 
$
5,039

Year ended December 31, 2013
$
5,343

 
$
—

 
$
(1
)
 
$
5,342

Year ended December 31, 2012
$
5,343

 
$
90

 
$
(90
)
 
$
5,343