Gas Reserves (Details) - USD ($)		12 Months Ended
		Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Gas Reserves [Abstract]
Total cumulative gas reserves investment		$ 188,000,000
Encana Gas reserves investment		178,000,000
Cumulative gross investment Jonah Wells		10,000,000
Additional Jonah Wells rate per therm		$ 0.4725
Gas Reserves Percent Gas Supplies YTD		8.00%	11.00%	10.00%
Gas Reserves, Current		$ 15,926,000	$ 17,094,000
Gas Reserves Noncurrent Gross		171,610,000	170,453,000
Gas Reserves Amortization		71,426,000	55,901,000
Total Gas Reserves	[1]	116,110,000	131,646,000
Deferred Taxes Related To Gas Reserves		28,119,000	27,203,000
Net Gas Reserves Investment		87,991,000	104,443,000
Total gas reserves investment Jonah Wells		$ 6,700,000	$ 8,000,000

[1] Our net investment in additional wells included in total gas reserves was $6.7 million and $8.0 million at December 31, 2016 and 2015, respectively.