Other Intangible Assets, Net

12 Months Ended

Dec. 31, 2017

Note 6 Other Intangible Assets, Net

Significant components of other intangible assets as of December 31, 2017 and 2016 are summarized as follows:


	2017
(in thousands)	Gross		Accumulated Amortization	Net
Merchant relationships	$	588,000	(147,000)	$	441,000
Channel relationships		439,398	(200,540)		238,858
Customer relationships		167,222	(139,969)		27,253
Trade name		62,468	(58,068)		4,400
Covenants-not-to-compete		29,940	(20,815)		9,125
Database		28,000	(25,200)		2,800
Trade association		10,000	(7,750)		2,250
Favorable lease		3,006	(1,546)		1,460
Total	$	1,328,034	(600,888)	$	727,146


	2016
(in thousands)	Gross		Accumulated Amortization	Net
Merchant relationships	$	588,000	(63,000)	$	525,000
Channel relationships		439,600	(148,815)		290,785
Customer relationships		166,340	(122,465)		43,875
Trade name		62,397	(45,197)		17,200
Covenants-not-to-compete		29,940	(13,869)		16,071
Database		28,000	(19,600)		8,400
Trade association		10,000	(6,750)		3,250
Favorable lease		3,006	(911)		2,095
Total	$	1,327,283	(420,607)	$	906,676

Amortization related to other intangible assets, which is recorded in selling, general and administrative expenses, was $179.5 million, $163.8 million and $75.8 million for 2017, 2016 and 2015, respectively.

The weighted average useful life for each component of other intangible assets, and in total, as of December 31, 2017 is as follows:


		Weighted Average Amortization Period (Years)
Merchant relationships		7.0
Channel relationships		8.6
Customer relationships		8.2
Trade name		3.9
Covenants-not-to-compete		4.3
Database		5.0
Trade association		10.0
Favorable lease		5.1
Total		7.4

Estimated future amortization expense of other intangible assets as of December 31, 2017 for the next five years is:


(in thousands)
2018	$	162,131
2019		145,457
2020		140,193
2021		119,620
2022		99,420