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Accounts Payable and Other Accrued Liabilities (Tables)
3 Months Ended
Mar. 31, 2017
Payables and Accruals [Abstract]  
Schedule of Accounts Payable and Accrued Liabilities
Accounts payable and other accrued liabilities consisted of the following (in thousands):
 
March 31, 2017
 
December 31, 2016
Accounts payable
$
18,877

 
$
20,321

Accrued liabilities
15,335

 
16,909

 
$
34,212

 
$
37,230