GOODWILL AND INTANGIBLE ASSETS, NET (Tables)

9 Months Ended

Sep. 30, 2017

GOODWILL AND INTANGIBLE ASSETS, NET [Abstract]

Summary of Intangible Assets by Major Class

The following tables summarize the gross carrying amounts and accumulated amortization of intangible assets by major class (in thousands):

	September 30, 2017
Intangible assets subject to amortization (Definite-lived)	Gross		Accumulated Amortization			Net
Customer relationships	$	16,852	$	(3,370	)	$	13,482
Non-compete agreements		94		(57	)		37
Licenses and permits		1,471		(364	)		1,107
Developed technology		6,131		(1,839	)		4,292
		24,548		(5,630	)		18,918
Intangible assets not subject to amortization (Indefinite-lived)
Emissions Allowance		197		-			197
Trade name		2,158		-			2,158
Total	$	26,903	$	(5,630	)	$	21,273

	December 31, 2016
Intangible assets subject to amortization (Definite-lived)	Gross		Accumulated Amortization			Net
Customer relationships	$	16,852	$	(2,527	)	$	14,325
Non-compete agreements		94		(43	)		51
Licenses and permits		1,471		(285	)		1,186
Developed technology		6,131		(1,379	)		4,752
		24,548		(4,234	)		20,314
Intangible assets not subject to amortization (Indefinite-lived)
Emissions Allowance		197		-			197
Trade name		2,158		-			2,158
Total	$	26,903	$	(4,234	)	$	22,669

Estimated Amortization Expenses for Succeeding Five Fiscal Years

Based on identified intangible assets that are subject to amortization as of September 30, 2017, we expect future amortization expenses for each period to be as follows (in thousands):

	Remainder of 2017		2018		2019		2020		2021		Thereafter
Customer relationships	$	282	$	1,123	$	1,123	$	1,123		1,123	$	8,710
Non-compete agreements		5		19		12		-		-		-
Licenses and permits		26		106		106		106		106		656
Developed technology		153		613		613		613		613		1,687
Total future amortization expense	$	466	$	1,861	$	1,854	$	1,842	$	1,842	$	11,053