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Receivables (Tables)
 9 Months Ended
Sep. 30, 2017
Receivables  
Schedule of receivables

Receivables consisted of the following (dollars in thousands):

 

 

 

 

 

 

 

 

 

 

 

September 30,

 

December 31,

 

 

    

2017

    

2016

 

Customers and other

 

$

34,344

 

$

37,408

 

Allowance for doubtful accounts

 

 

(3,970)

 

 

(4,031)

 

 

 

$

30,374

 

$

33,377