Note 4 - Property and Equipment (Details Textual) $ in Millions	Jan. 01, 2016 USD ($)
Water Management Assets of HII Technologies and Wet Oilfield Services, LLC [Member] \| HWWM [Member]
Payments to Acquire Productive Assets	$ 4

The cash outflow for purchases of and capital improvements on property, plant and equipment (capital expenditures), software, and other intangible assets.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3213-108585

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration