Goodwill and Intangible Assets

There was no change in the carrying amount of goodwill during the twelve months ended December 31, 2018 and 2017, respectively.

Acquired intangible assets at December 31, 2018 and 2017 were comprised of the following (in thousands):



	December 31, 2018							December 31, 2017
	Gross carrying amount		Accumulated amortization			Net		Gross carrying amount		Accumulated amortization			Net
Amortizable intangible assets:
Client/broker contracts & relations	$	237,430	$	(108,834	)	$	128,596	$	237,221	$	(84,581	)	$	152,640
Trade names	3,880		(3,587		)	293		3,880		(3,492		)	388
Technology	14,646		(14,009		)	637		14,646		(13,047		)	1,599
Noncompete agreements	2,232		(2,084		)	148		2,232		(2,013		)	219
Favorable lease arrangements	1,134		(713		)	421		1,134		(611		)	523
Total	$	259,322	$	(129,227	)	$	130,095	$	259,113	$	(103,744	)	$	155,369

In September 2017, the Company acquired certain intangible assets from Tango related to Tango’s HSA product (see Note 4). This transaction was accounted for as an asset purchase.

Amortization expense of intangible assets totaled $25.5 million, $25.8 million and $21.9 million in 2018, 2017 and 2016, respectively. Acquired intangible assets are amortized on a straight-line basis generally over one to ten years.

The Company accelerated amortization of intangible assets for client contracts and broker relationships of $3.8 million, triggered in the second quarter of 2016, related to the termination of a significant customer relationship in the health insurance exchange business.

As of December 31, 2018, the expected future amortization expense for acquired intangible assets is as follows (in thousands):



2019	$	24,914
2020	22,749
2021	19,945
2022	17,509
2023	14,721
Thereafter	30,257
Total	$	130,095