Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Revenues
Revenues	$ 46,919	$ 37,068
Expenses
Cost of Revenue	37,450	29,625
Selling, general and administrative expenses	5,225	4,392
Patent litigation and defense costs	80	129
Severance and Transition Costs	633	784
(Gain) loss on disposal of equipment	(108)	62
Depreciation and amortization	5,989	5,833
Total operating expenses	49,269	40,825
Loss from operations	(2,350)	(3,757)
Other income (expense)
Interest expense	(2,228)	(2,261)
Other (expense)	(407)	(463)
Total other expense	(2,635)	(2,724)
Loss from continuing operations before tax benefit	(4,985)	(6,481)
Income tax (expense) benefit	(32)	561
Loss from continuing operations	(5,017)	(5,920)
Loss from operations of discontinued operations (including gain on disposal of $129,000 and loss on impairment of $130,000)	(848)	(973)
Income tax benefit
Loss on discontinued operations	(848)	(973)
Net loss	$ (5,865)	$ (6,893)
Loss from continuing operations per common share – basic and diluted (in dollars per share)	$ (0.09)	$ (0.12)
Loss from discontinued operations per common share – basic and diluted (in dollars per share)	(0.02)	(0.02)
Net loss per share (in dollars per share)	$ (0.11)	$ (0.14)
Basic weighted average number of common shares outstanding (in shares)	52,865	51,070
Well Enhancement Services Segment [Member]
Revenues
Revenues	$ 42,759	$ 34,686
Expenses
Cost of Revenue	32,852	25,902
Depreciation and amortization	4,848	4,817
Water Transfer Services Segment [Member]
Revenues
Revenues	4,160	2,128
Expenses
Cost of Revenue	3,972	2,666
Depreciation and amortization	1,118	985
Unallocated and Other Segments [Member]
Revenues
Revenues		254
Expenses
Cost of Revenue	626	1,057
Depreciation and amortization	$ 23	$ 31