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SCHEDULE II Valuation and Qualifying Accounts (Notes)
 12 Months Ended
Dec. 31, 2013
Valuation and Qualifying Accounts [Abstract]  
SCHEDULE II Valuation and Qualifying Accounts
Allowance for Doubtful Accounts
 
 
 
 
 
 
 
 
 
 
(Dollars in thousands)
 
Balance at Beginning of Period
 
Charged to (Reduction of) Costs and Expenses
 
Taken Against Allowance
 
Other (Deductions) Recoveries
 
Balance at End of Period
December 31, 2013
 
$
1,773

 
$
670

 
$
(788
)
 
$
—

 
$
1,655

December 31, 2012
 
$
1,040

 
$
1,253

 
$
(520
)
 
$
—

 
$
1,773

December 31, 2011
 
1,630

 
680

 
(1,270
)
 
—

 
1,040