INTANGIBLE ASSETS OTHER THAN GOODWILL

12 Months Ended

Dec. 31, 2015

Intangible Assets, Net (Excluding Goodwill) [Abstract]

INTANGIBLE ASSETS OTHER THAN GOODWILL

 INTANGIBLE ASSETS OTHER THAN GOODWILL

Our intangible assets other than goodwill consisted of the following at December 31, 2015 and 2014:

	Cost		Accumulated Amortization		Net
	($ in thousands)
December 31, 2015:
Trade names	$	46	$	23	$	23
Patents	7,000		234		$	6,766
Customer relationships	43,922		21,267		22,655
Supply and transportation agreements	3,801		2,367		1,434
Non-compete agreement	1,550		981		569
Total	$	56,319	$	24,872	$	31,447
December 31, 2014:
Trade names	$	46	$	20	$	26
Customer relationships	43,922		15,293		28,629
Supply and transportation agreements	3,330		1,769		1,561
Non-compete agreement	1,550		608		942
Total	$	48,848	$	17,690	$	31,158

The following table presents the estimated future amortization expense related to intangible assets through 2020:

Year Ending December 31,	($ in thousands)
2016	$	8,688
2017	7,267
2018	4,416
2019	2,610
2020	2,081