XML 43 R29.htm IDEA: XBRL DOCUMENT v3.8.0.1
Exploration Activities (Tables)
12 Months Ended
Sep. 30, 2017
Exploration Activities [Abstract]  
Summary of costs incurred in the oil property acquisition, exploration and development activities

 

   September 30, 
2017
  September 30, 
2016
 
 Acquisition of Properties:      
 Proved $  $ 
 Unproved  142,400   194,037 
 Exploration costs     39,658 
 Development costs