Stock-Based Compensation (Details) (USD $)
In Millions, except Share data, unless otherwise specified |
3 Months Ended | 9 Months Ended | 0 Months Ended | 9 Months Ended | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Mar. 31, 2014
|
Mar. 31, 2013
|
Mar. 31, 2014
|
Mar. 31, 2013
|
Mar. 31, 2014
PBOs
|
Mar. 31, 2014
PBOs
CO2-EOR Pilot Program at Poplar
|
Mar. 31, 2014
PBOs
CO2-EOR Development Project at Poplar
|
Mar. 31, 2014
PBOs
Sale of Substantially All of the Amadeus Basin Assets
|
Mar. 31, 2014
PBOs
Approval of a Farmout Agreement or Participation in Drilling a Well in the Weald Basin
|
Mar. 31, 2014
PBOs
Approval of a Farmout Agreement in the Bonaparte Basin
|
Mar. 31, 2014
Market Based
|
Jul. 02, 2013
Restricted Stock
Executive Officers
|
Jul. 02, 2013
Common Stock
Non-employee Directors
|
Jan. 16, 2013
Employee Stock Option
|
Jan. 16, 2013
RSUs
|
Mar. 31, 2014
2012 Stock Incentive Plan
|
Jan. 16, 2013
2012 Stock Incentive Plan
|
Mar. 31, 2014
1998 Stock Incentive Plan
|
Dec. 08, 2010
1998 Stock Incentive Plan
|
|
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||||||||||||||||||
Number of shares authorized | 5,000,000 | 288,435 | |||||||||||||||||
Maximum number of shares allowed to be issued each year | 1,000,000 | 500,000 | |||||||||||||||||
Expiration term | 10 years | ||||||||||||||||||
Grants in period (in shares) | 1,500,000 | 1,500,000 | 3,000,000 | ||||||||||||||||
Performance metrics weighted average | 10.00% | 40.00% | 20.00% | 20.00% | 10.00% | ||||||||||||||
Minimum per share closing price for vesting (in dollars per share) | $ 2.35 | ||||||||||||||||||
Nonvested options outstanding (in shares) | 2,250,000 | ||||||||||||||||||
Share-based compensation expense | $ 0.6 | $ 0.1 | $ 1.7 | $ 0.8 | |||||||||||||||
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized | $ 1.5 | $ 1.5 | |||||||||||||||||
Grants in period | 450,000 | 266,664 |