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ALLOWANCE FOR DOUBTFUL ACCOUNTS (Notes)
 12 Months Ended
Dec. 31, 2018
Valuation Allowance [Abstract]  
ALLOWANCE FOR DOUBTFUL ACCOUNTS
ALLOWANCE FOR DOUBTFUL ACCOUNTS
The table below presents a rollforward of our allowance for doubtful accounts for the years ended December 31, 2018 and 2017, the period from December 16, 2016 through December 31, 2016 and the period from January 1, 2016 through December 15, 2016 (in thousands):
 
 
 
 
 
 
 
Balance at
Beginning
of Period
 
Charged to
Expense
 
Deductions
 
Balance at
End of
Period
Successor:
 
 
 
 
 
 
 
As of December 31, 2018
$
875

 
$
286

 
$
(105
)
 
$
1,056

As of December 31, 2017
168

 
1,420

 
(713
)
 
875

As of December 31, 2016
—

 
168

 
—

 
168

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Predecessor:
 
 
 
 
 
 
 
As of December 15, 2016
20,915

 
2,532

 
(20,404
)
 
3,043


In connection with the application of fresh start accounting on December 15, 2016, the carrying value of trade receivables was adjusted to fair value, eliminating the reserve for doubtful accounts. See “Note 3. Fresh Start Accounting” for more details.