Note 4 - Property and Equipment - Summary of Property and Equipment (Details) - USD ($)	Dec. 31, 2016	Dec. 31, 2015
Property and Equipment - Gross	$ 66,844,748	$ 62,505,929
Accumulated depreciation	(32,226,787)	(26,011,268)
Property and equipment – net	34,617,961	36,494,661
Vehicles [Member]
Property and Equipment - Gross	54,266,600	54,153,487
Water Transfer Equipment [Member]
Property and Equipment - Gross	4,520,155	176,412
Property, Plant and Equipment, Other Types [Member]
Property and Equipment - Gross	2,898,457	3,158,758
Building and Building Improvements [Member]
Property and Equipment - Gross	3,983,897	3,752,841
Land [Member]
Property and Equipment - Gross	784,636	873,428
Disposal Wells [Member]
Property and Equipment - Gross	$ 391,003	$ 391,003

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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