Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements - Unobservable Input Reconciliation (Details)

v3.5.0.2
Fair Value Measurements - Unobservable Input Reconciliation (Details) - USD ($)
$ in Thousands
12 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Rolling production average 60 days  
Impairment of proved oil and gas properties   $ 17,400
Impairment of goodwill   674
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Accretion expense $ 0 36
Contingent consideration payable | Recurring | Level 3    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Balance at beginning of year 0 1,852
Accretion expense 0 36
Revision to estimate 0 (1,888)
Fiscal year closing balance $ 0 $ 0