Quarterly report pursuant to Section 13 or 15(d)

Contract Termination and Rig Stacking (Details)

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Contract Termination and Rig Stacking (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2015
Contract Termination and Rig Stacking Line Items    
Contract termination and rig stacking $ 1,937 $ 10,902