ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES - Allownace and Oil and Gas Properties (Details) $ in Thousands |
12 Months Ended | |||
|---|---|---|---|---|
|
Jun. 30, 2016
USD ($)
bbl
|
Jun. 30, 2015
USD ($)
|
Mar. 31, 2017
bbl
|
Jun. 30, 2013
bbl
|
|
| Oil and Gas Properties | ||||
| Gain or loss recorded for oil and natural gas properties | $ | $ 0 | |||
| Average period over which oil and natural gas price is based to derive future net revenue | 12 months | |||
| Discount percentage | 10.00% | |||
| Proved reserves | bbl | 0 | |||
| Amortization of proved oil and gas properties subject to the full-cost ceiling test | $ | $ 14,300 | $ 0 | ||
| Guinea concession | ||||
| Oil and Gas Properties | ||||
| Proved reserves | bbl | 0 | 0 | ||