SUPPLEMENTARY FINANCIAL INFORMATION Gas and Oil (Details)	Dec. 31, 2015	Dec. 31, 2014
SUPPLEMENTARY FINANCIAL INFORMATION Gas and Oil
Gas (MMCF) Proved developed and undeveloped reserves - 1/1/2015	2,866	2,887
Gas (MMCF) Purchase of oil and natural gas properties in place	0	0
Gas (MMCF) Discoveries and exclusions	0	0
Gas (MMCF) Revisions	(94)	138
Gas (MMCF) Sales of oil and gas properties in place	0	0
Gas (MMCF) Production	(168)	(159)
Gas (MMCF) Proved developed and undeveloped reserves - 12/31/2015	2,604	2,866
Gas (MMCF) Proved developed at beginning (of year)	698	719
Gas (MMCF) Proved developed reserves at end (of year)	504	698
SUPPLEMENTARY FINANCIAL INFORMATION Oil (MBBLS)(Details)
Oil (MBBLS) Proved developed and undeveloped reserves - 1/1/2014	139	173
Oil (MBBLS) Purchase of oil and natural gas properties in place	0	0
Oil (MBBLS) Discoveries and exclusions	0	0
Oil (MBBLS) Revisions	(69)	(24)
Oil (MBBLS) Sales of oil and gas properties in place	0	0
Oil (MBBLS) Production	(12)	(10)
Oil (MBBLS) Proved developed and undeveloped reserves 12/31/2014	58	139
Oil (MBBLS) Proved developed at beginning (of year)	70	105
Oil (MBBLS) Proved developed reserves at end( of year)	59	70