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Supplemental Cash Flow Information
 9 Months Ended
Sep. 30, 2018
Supplemental Cash Flow Elements [Abstract]  
Supplemental Cash Flow Information
Supplemental Cash Flow Information
The following table presents additional information about the change in certain working capital accounts:
 
 
Nine Months Ended 
 September 30,
(in thousands)
 
2018
 
2017
 
 
 
 
 
Accounts receivable
 
$
(9,317
)
 
$
(4,170
)
Other current assets
 
(5,219
)
 
(7,968
)
Accounts payable
 
14,154

 
1,732

Accrued employee compensation and benefits
 
(6,320
)
 
(5,417
)
Other accrued liabilities
 
6,322

 
10,526

Unearned revenue
 
10,339

 
(554
)
Other, net
 
281

 
(2,424
)
Total
 
$
10,240

 
$
(8,275
)