Note 3 - Property and Equipment - Summary of Property and Equipment (Details) - USD ($)	Sep. 30, 2016	Dec. 31, 2015
Vehicles [Member]
Property and Equipment - Gross	$ 54,269,251	$ 54,153,487
Water Transfer Equipment [Member]
Property and Equipment - Gross	4,347,803	176,412
Property, Plant and Equipment, Other Types [Member]
Property and Equipment - Gross	3,193,615	3,158,758
Building and Building Improvements [Member]
Property and Equipment - Gross	3,835,110	3,752,841
Land [Member]
Property and Equipment - Gross	873,428	873,428
Disposal Wells [Member]
Property and Equipment - Gross	391,003	391,003
Property and Equipment - Gross	66,910,210	62,505,929
Accumulated depreciation	(30,667,966)	(26,011,268)
Property and equipment – net	$ 36,242,244	$ 36,494,661

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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-Section S99
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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-Section 50
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-Subparagraph (b)
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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
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-Subparagraph (SX 210.5-02(13))
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