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Restructuring and Other Charges (Tables)
12 Months Ended
Dec. 31, 2018
Restructuring and Related Activities [Abstract]  
Schedule of components of charges included in restructuring and other charges
The following table summarizes the components of charges included in restructuring and other charges in our consolidated statements of operations for the years ended December 31, 2017 and 2016 (in thousands):
 
Year Ended December 31,
 
2017
 
2016
Retention and severance benefits
$
1,386

 
$
12,374

Consulting services

 
4,527

Total restructuring and other charges
$
1,386

 
$
16,901



The following table presents the expense incurred under this plan by reportable segment (in thousands):

 
Contract
Operations
 
Aftermarket
Services
 
Other (1)
 
Total
Year ended December 31, 2016
$
3,424

 
$
1,113

 
$
8,791

 
$
13,328

——————
(1) 
Represents expenses incurred under this plan that are not directly attributable to our reportable segments because it represents severance benefits and consulting fees incurred within the corporate function.
Summary of changes to accrued liability balance related to restructuring and other charges
The following table summarizes the changes to our accrued liability balance related to restructuring and other charges for the years ended December 31, 2016 and 2017 (in thousands):
 
Spin-off
 
Cost
Reduction Plan
 
Total
Balance at January 1, 2016
$
855

 
$

 
$
855

Additions for costs expensed
3,573

 
13,328

 
16,901

Less: non-cash expense(1)
(1,828
)
 

 
(1,828
)
Reductions for payments
(1,888
)
 
(13,328
)
 
(15,216
)
Balance at December 31, 2016
$
712

 
$

 
$
712

Additions for costs expensed
1,386

 

 
1,386

Less: non-cash expense(1)
(997
)
 

 
(997
)
Reductions for payments
(1,101
)
 

 
(1,101
)
Balance at December 31, 2017
$

 
$

 
$


——————
(1) 
Includes non-cash retention benefits associated with the Spin-off to be settled in Archrock stock.