Stockholders' and Mezzanine equity - Series A Perpetual Convertible Preferred Stock (Details)	Apr. 17, 2017	Jan. 19, 2017	Aug. 25, 2016
Series A preferred stock
Series A Perpetual Convertible Preferred Stock
Dividend rate (as a percent)	8.00%	8.00%	8.00%

The percentage rate used to calculate dividend payments on temporary equity.

No definition available.

Name:	jone_TemporaryEquityDividendRatePercentage
Namespace Prefix:	jone_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration