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Accounts Payable and Accrued Liabilities (Tables)
12 Months Ended
Dec. 31, 2017
Accounts Payable and Accrued Liabilities [Abstract]  
Accounts Payable and Accrued Liabilities
Accounts Payable and Accrued Liabilities
 
 
December 31,
(In thousands)
 
2017
 
2016
Trade accounts payable
 
$
169,293

 
$
128,106

Accrued wages, salaries and employee benefits
 
41,979

 
49,871

Accrued interest
 
12,723

 
12,149

Accrued discounts and allowances
 
7,283

 
10,291

Accrued taxes other than income taxes payable
 
6,907

 
6,946

Accrued utilities
 
6,759

 
6,712

Other
 
11,677

 
9,624

 
 
$
256,621

 
$
223,699