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Accounts Receivable (Tables)
12 Months Ended
Dec. 31, 2017
Receivables [Abstract]  
Accounts Receivable

 

 

 

December 31,

 

 

 

2017

 

 

2016

 

 

 

(In Thousands)

 

Trade receivables and other

 

$

59,873

 

 

$

51,656

 

Allowance for doubtful accounts

 

 

(303

)

 

 

(357

)

 

 

$

59,570

 

 

$

51,299