Debt (Notes Payable - Narrative) (Details)	9 Months Ended
Debt (Notes Payable - Narrative) (Details)	Sep. 30, 2015 USD ($)	Oct. 01, 2015 USD ($)	Mar. 31, 2015	Feb. 24, 2015 USD ($)	Dec. 31, 2014 USD ($)
Debt Instrument [Line Items]
Current portion of long-term debt	$ 74,340,000				$ 11,825,000
Interest rates on debt instruments	3.47%				3.44%
MidCentral Energy Services [Member] \| Commercial Paper [Member]
Debt Instrument [Line Items]
Basis spread on debt instruments	1.00%
Short-term debt				$ 1,400,000
MidCentral Energy Partners LP [Member] \| Commercial Paper [Member]
Debt Instrument [Line Items]
Short-term debt	$ 9,100,000
EFS and RPS [Member]
Debt Instrument [Line Items]
Interest rate			5.50%
Notes Payable to Banks [Member]
Debt Instrument [Line Items]
Long-term debt	4,600,000
Current portion of long-term debt	$ 4,200,000
Required fixed-charge ratio	1.25
Loans Payable [Member]
Debt Instrument [Line Items]
Term loans balance	$ 9,900,000
Loans Payable [Member] \| Base Rate [Member]
Debt Instrument [Line Items]
Basis spread on debt instruments	(2.30%)
Interest rates on debt instruments	5.50%
Minimum [Member] \| Base Rate [Member]
Debt Instrument [Line Items]
Basis spread on debt instruments	1.50%
Minimum [Member] \| Notes Payable to Banks [Member]
Debt Instrument [Line Items]
Durations of debt instruments	12 months
Stated rates on debt instruments	5.50%
Minimum [Member] \| Loans Payable [Member]
Debt Instrument [Line Items]
Minimum balance required to be maintained on reserve bank account	$ 300,000
Minimum [Member] \| Loans Payable [Member] \| EFS and RPS [Member]
Debt Instrument [Line Items]
Required fixed-charge ratio	1.25
Required working capital and cash balance	$ 1,000,000
Minimum [Member] \| Loans Payable [Member] \| EFS and RPS [Member] \| Subsequent Event [Member]
Debt Instrument [Line Items]
Required working capital and cash balance		$ 3,500,000.0
Minimum [Member] \| Loans Payable [Member] \| Base Rate [Member]
Debt Instrument [Line Items]
Stated rates on debt instruments	5.50%
Maximum [Member] \| Base Rate [Member]
Debt Instrument [Line Items]
Basis spread on debt instruments	2.25%
Maximum [Member] \| Notes Payable to Banks [Member]
Debt Instrument [Line Items]
Durations of debt instruments	60 months
Stated rates on debt instruments	10.51%
Maximum [Member] \| Loans Payable [Member] \| EFS and RPS [Member]
Debt Instrument [Line Items]
Required leverage ratio	1.5

New Source Energy Partners L.P. 10-Q