Note 1 - Organization and Summary of Significant Accounting Policies (Details Textual)	3 Months Ended
	Mar. 31, 2017 USD ($) shares	Mar. 31, 2016 shares	Dec. 31, 2016 USD ($)
Cash and Equivalents Maturity Period	90 days
Customer Advances, Noncurrent	$ 1,258,024		$ 1,053,582
Period Open to Tax Returns Examination	3 years
Gas Balancing Payable	$ 0		$ 0
General Partner, Assets	0
General Partner, Liabilities	$ 0
General Partner, Operations	0
Number of Uncertain Tax Positions	0
Limited Partner [Member]
Initial Percentage of Revenue and Cost Allocation	99.00%
Weighted Average Limited Partnership Units Outstanding, Basic | shares	5,587,616	5,587,616
General Partner [Member]
Initial Percentage of Revenue and Cost Allocation	1.00%
Minimum [Member]
Actual Processing Time for Sales Transaction	60 days
Maximum [Member]
Actual Processing Time for Sales Transaction	90 days