Derivative Instruments and Hedging Activities - Offsetting Assets and Liabilities - Counterparties (Details)	Sep. 30, 2017 Counterparty
Offsetting Assets and Liabilities
Number of counterparties to commodity derivative contracts	7

Represents the number of counterparties to commodity derivative contracts of the entity.

No definition available.

Name:	jone_NumberOfCounterpartiesToCommodityDerivativeContracts
Namespace Prefix:	jone_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant