Summary of Significant Accounting Policies, Derivatives by Hedging Relationship and Fair Value Measurements (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2015	Dec. 31, 2014
Company's asset retirement obligations [Roll Forward]
Balance on January 1	$ 2,464,000	$ 2,564,000
Liabilities incurred	39,000	111,000
Accretion of discount	93,000	94,000
Liabilities settled	(127,000)	(305,000)
Balance on December 31	2,469,000	2,464,000	$ 2,564,000
Escrow cash				$ 75,000
Level 1 Quoted Prices [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net Value	0	0	0	0	$ 0
Factors impacting the change in the net value of the Company's fair value contracts [Abstract]
Net Fair Value January 1	0	0
Net realized (gains) losses	0	0
Option deposit		0
Option gain		0
Net unrealized gains (losses)	0	0
Net Fair Value December 31	0	0	0
Level 2 Observable [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net Value	(7,000)	(7,000)	395,000	(195,000)	(7,000)
Factors impacting the change in the net value of the Company's fair value contracts [Abstract]
Net Fair Value January 1	(7,000)	395,000
Net realized (gains) losses	7,000	220,000
Option deposit		(714,000)
Option gain		99,000
Net unrealized gains (losses)	(195,000)	(7,000)
Net Fair Value December 31	(195,000)	(7,000)	395,000
Total Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net Value	(7,000)	395,000	395,000	(195,000)	(7,000)
Factors impacting the change in the net value of the Company's fair value contracts [Abstract]
Net Fair Value January 1	(7,000)	395,000
Net realized (gains) losses	7,000	220,000
Option deposit		(714,000)
Option gain		99,000
Net unrealized gains (losses)	(195,000)	(7,000)
Net Fair Value December 31	(195,000)	(7,000)	395,000
Fair Value, Measurements, Recurring [Member] | Level 1 Quoted Prices [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives - Current assets				0	0
Derivatives - Current liabilities				0	0
Net Value	0	0		0	0
Factors impacting the change in the net value of the Company's fair value contracts [Abstract]
Net Fair Value January 1	0
Net Fair Value December 31	0	0
Fair Value, Measurements, Recurring [Member] | Level 2 Observable [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives - Current assets				0	1,332,000
Derivatives - Current liabilities				(195,000)	(1,339,000)
Net Value	(7,000)	(7,000)		(195,000)	(7,000)
Factors impacting the change in the net value of the Company's fair value contracts [Abstract]
Net Fair Value January 1	(7,000)
Net Fair Value December 31	(195,000)	(7,000)
Fair Value, Measurements, Recurring [Member] | Level 3 Unobservable [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives - Current assets				0	0
Derivatives - Current liabilities				0	0
Net Value	0	0		0	0
Factors impacting the change in the net value of the Company's fair value contracts [Abstract]
Net Fair Value January 1	0
Net Fair Value December 31	0	0
Fair Value, Measurements, Recurring [Member] | Counterparty Offsets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives - Current assets				0	(396,000)
Derivatives - Current liabilities				0	396,000
Net Value	0	0		0	0
Factors impacting the change in the net value of the Company's fair value contracts [Abstract]
Net Fair Value January 1	0
Net Fair Value December 31	0	0
Fair Value, Measurements, Recurring [Member] | Total Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives - Current assets				0	936,000
Derivatives - Current liabilities				(195,000)	(943,000)
Net Value	(195,000)	(7,000)		$ (195,000)	$ (7,000)
Factors impacting the change in the net value of the Company's fair value contracts [Abstract]
Net Fair Value January 1	(7,000)
Net Fair Value December 31	(195,000)	(7,000)
Commodity Contract [Member] | Revenues - Marketing [Member] | Not Designated as Hedging Instrument [Member]
Earnings (loss) recognized in income [Abstract]
Gain (Loss)	$ (188,000)	$ 312,000	$ (193,000)