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OTHER NONCURRENT ASSETS (Tables)
 12 Months Ended
Dec. 31, 2018
Other Assets [Abstract]  
Schedule of other assets
Other noncurrent assets contain the following (in thousands):
 
 
Successor
 
 
As of December 31,
 
    
2018
    
2017
Operating bonds
 
$
2,713

 
$
2,683

Deferred financing costs
 
 
1,710

 
 
—

AMT credit refund(1)
 
 
376

 
 
376

Restricted cash
 
 
86

 
 
71

Other noncurrent assets
 
$
4,885

 
$
3,130


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(1) Represents the alternative minimum tax credit refund due to the Company upon application of the newly enacted comprehensive tax legislation that took effect on December 22, 2017.