Intangible Assets, Net

12 Months Ended

Dec. 31, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets

Amortizable intangible assets at December 31, 2017 and 2016 related primarily to customer relationships and trademarks that resulted from our acquisition of Amcom Software, Inc. in 2011. Such intangibles are being amortized over a period of ten years and six years respectively. We have not recorded an impairment of our intangible assets during the years ended December 31, 2017, 2016 and 2015.

The net consolidated balance of intangible assets consisted of the following at December 31, 2017 and 2016:



		As of December 31,
		2017							2016
(Dollars in thousands)	Useful Life (In Years)	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Customer relationships	10	$	25,002	$	(17,085	)	$	7,917	$	25,002	$	(14,585	)	$	10,417
Trademarks	6	5,754		(5,754		)	—		5,754		(5,368		)	386
Total amortizable intangible assets	6 - 10	$	30,756	$	(22,839	)	$	7,917	$	30,756	$	(19,953	)	$	10,803

Estimated amortization of intangible assets for future periods was as follows:



For the year ending December 31,	(Dollars in thousands)
2018	$	2,500
2019	2,500
2020	2,500
2021	417
Total	$	7,917