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Accounts Payable and Accrued Liabilities (Tables)
3 Months Ended
Mar. 31, 2018
Payables and Accruals [Abstract]  
Summary of Accounts Payable and Accrued Liabilities
Accounts payable and accrued liabilities at March 31, 2018 and December 31, 2017 consisted of the following (in thousands):
 
March 31,
 
December 31,
 
2018
 
2017
Accounts payable
$
31,899

 
$
33,912

Accrued compensation
21,221

 
25,510

Accrued property and other taxes
12,485

 
16,908

Accrued severance and other charges
1,072

 
1,444

Income taxes
13,143

 
8,091

Accrued purchase orders and other
21,191

 
23,020

Total accounts payable and accrued liabilities
$
101,011

 
$
108,885