Note 13 - Segment Reporting (Tables)

12 Months Ended

Dec. 31, 2018

Notes Tables

Schedule of Segment Reporting Information, by Segment [Table Text Block]

	Well Enhancement		Water Transfer Services			Unallocated & Other			Total
Year Ended December 31, 2018:
Revenues	$	42,759	$	4,160		$	-		$	46,919
Cost of Revenue		32,852		3,972			626			37,450
Segment Profit	$	9,907	$	188		$	(626	)	$	9,469
Depreciatio n and Amortization	$	4,848	$	1,118		$	23		$	5,989
Capital Exp enditures	$	988	$	724		$	69		$	1,781
Identifiable assets (1)	$	41,442	$	3,080		$	427		$	44,949
Year Ended December 31, 2017:
Revenues	$	34,686	$	2,128		$	254		$	37,068
Cost of Revenue		25,902		2,666			1,057			29,625
Segment Profit	$	8,784	$	( 538	)	$	(803	)	$	7,443
Depreciatio n and Amortization	$	4,817	$	985		$	31		$	5,833
Capital Exp enditures	$	1,184	$	487		$	6		$	1,677
Identifiable assets (1)	$	37,651	$	2,986		$	511		$	41,148

Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block]

	December 31,			December 31,
	2018			2017
Segment profit	$	9,469		$	7,443
Selling, general and administrative expense		(5,225	)		(4,392	)
Patent litigation defense costs		(80	)		(129	)
Severance and transition costs		(633	)		(784	)
Gain (loss) from disposal of equipment		108			(62	)
Depreciation and amortization		(5,989	)		(5,833	)
Loss from Operations	$	(2,350	)	$	(3,757	)

Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]

	For the Year Ended December 31,
	2018		2017
BY SERVICE LINE AND GEOGRAPHY:
Well Enhancement Services:
Rocky Mountain Region (1)	$	27,582	$	23,514
Central USA Region (2)		10,950		9,613
Eastern USA Region (3)		4,227		1,813
Total Well Enhancement Services		42,759		34,940
Water Transfer Services:
Rocky Mountain Region (1)		4,160		2,128
Central USA Region (2)		-		-
Eastern USA Region (3)		-		-
Total Water Transfer Services		4,160		2,128
Total Revenues	$	46,919	$	37,068