Nature of operations and summary of significant accounting policies (Tables)
3 Months Ended 12 Months Ended
Mar. 31, 2017
Dec. 31, 2016
Accounting Policies [Abstract]    
Components of accounts receivable

Accounts receivable consisted of the following at March 31, 2017, and December 31, 2016:

 

     Successor     Predecessor  
     March 31,     December 31,  
     2017     2016  

Joint interests

   $ 13,304     $ 13,818  

Accrued commodity sales

     32,460       31,304  

Derivative settlements

     3,231       —    

Other

     2,016       1,657  

Allowance for doubtful accounts

     (593     (553
  

 

 

   

 

 

 
   $ 50,418     $ 46,226  
  

 

 

   

 

 

 

Accounts receivable consisted of the following at December 31:

 

     2016      2015  

Joint interests

   $ 13,818      $ 14,149  

Accrued commodity sales

     31,304        21,645  

Derivative settlements

     —          40,380  

Other

     1,657        3,329  

Allowance for doubtful accounts

     (553      (503
  

 

 

    

 

 

 
   $ 46,226      $ 79,000  
  

 

 

    

 

 

 
Components of inventory

Inventories consisted of the following at March 31, 2017, and December 31, 2016:

 

     Successor     Predecessor  
     March 31,     December 31,  
     2017     2016  

Equipment inventory

   $ 5,326     $ 8,165  

Commodities

     1,521       1,418  

Inventory valuation allowance

     —         (2,232
  

 

 

   

 

 

 
   $ 6,847     $ 7,351  
  

 

 

   

 

 

 

Inventories consisted of the following at December 31:

 

     2016      2015  

Equipment inventory

   $ 8,165      $ 11,470  

Commodities

     1,418        1,698  

Inventory valuation allowance

     (2,232      (839
  

 

 

    

 

 

 
   $ 7,351      $ 12,329  
  

 

 

    

 

 

 
Components of cost reduction initiatives expense

The expense consists of costs for one-time severance and termination benefits in connection with our reductions in force and third party legal and professional services we have engaged to assist in our cost savings initiatives as follows:

 

     Successor     Predecessor  
     Period from
March 22,

2017
through
March 31,
2017
    Period from
January 1,

2017
through
March 21,
2017
     Three months
ended
March 31,
2016
 

One-time severance and termination benefits

   $ 1     $ 608      $ 3,036  

Professional fees

     5       21        89  
  

 

 

   

 

 

    

 

 

 

Total cost reduction initiatives expense

   $ 6     $ 629      $ 3,125  
  

 

 

   

 

 

    

 

 

 

The expense consists of costs for one-time severance and termination benefits in connection with our reductions in force and third party legal and professional services we have engaged to assist in our cost savings initiatives as follows:

 

     Year ended December 31,  
     2016      2015      2014  

One-time severance and termination benefits

   $ 2,772      $ 7,757      $ —    

Professional fees

     107        2,271        —    
  

 

 

    

 

 

    

 

 

 

Total cost reduction initiatives expense

   $ 2,879      $ 10,028      $ —    
  

 

 

    

 

 

    

 

 

 
Adjustments to inventory  

These adjustments are reflected in “Loss on impairment of other assets” in our consolidated statements of operations.

 

     Year ended December 31,  
     2016      2015      2014  

Inventory - lower of cost or market adjustment

   $ 1,393      $ 10,192      $ —    
Schedule Of Estimated Useful Lives for Property and Equipment  

Estimated useful lives of our assets are as follows:

 

Furniture and fixtures

     10 years  

Automobiles and trucks

     5 years  

Machinery and equipment

     10 — 20 years  

Office and computer equipment

     5 — 10 years  

Building and improvements

     10 — 40 years