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Schedule II-Valuation and Qualifying Accounts
 12 Months Ended
Dec. 31, 2013
Schedule II-Valuation and Qualifying Accounts  
Schedule II-Valuation and Qualifying Accounts

Schedule II—Valuation and Qualifying Accounts
Three Years Ended December 31, 2013
($ in thousands)

 
   Allowance for Doubtful
Accounts(1)		  
 
   2013   2012   2011  

Balance at beginning of period

   $ 4,419   $ 2,367   $ 2,699  

Additions:

                    

Bad debt expense

     1,564     2,926     2,948  

Deductions:

                    

Charge-offs of uncollectible balances

     (4,130 )   (874 )   (3,280 )
               
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

Balance at end of period

   $ 1,853   $ 4,419   $ 2,367  
               
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
               
(1)
Includes the allowance for doubtful accounts for both accounts receivable and other receivables.