GOODWILL AND OTHER INTANGIBLE ASSETS

Goodwill

During the six months ended June 30, 2018, we changed our operating segments, as discussed in Note 10, “Operating Segments,” and, subsequently, our reporting units. We now have seven reporting units: US Colocation, US Cloud, US Network, INTL Colocation, INTL Cloud, INTL Network, and Ubersmith. We allocated goodwill to our new reporting units using a relative fair value approach. In addition, we completed an assessment of any potential goodwill impairment for all reporting units immediately prior to and after the reallocation and determined that no impairment existed.

During the six months ended June 30, 2018, our goodwill activity is as follows (in thousands):



	December 31, 2017		Re-allocations			SingleHop Acquisition (Note 4)		June 30, 2018
Operating segments:
INAP COLO	$	6,003	$	(6,003	)	$	—	$	—
INAP CLOUD	44,206		(44,206		)	—		—
INAP US	—		28,304			66,496		94,800
INAP INTL	—		21,905			—		21,905
Total	$	50,209	$	—		$	66,496	$	116,705

Other Intangible Assets

The components of our amortizing intangible assets, including capitalized software, are as follows (in thousands):



	June 30, 2018					December 31, 2017
	Gross Carrying Amount		AccumulatedAmortization			Gross Carrying Amount		AccumulatedAmortization
Acquired and developed technology	$	69,419	$	(49,936	)	$	52,825	$	(48,063	)
Customer relationships, trade names and noncompete	110,766		(53,137		)	71,116		(50,212		)
	$	180,185	$	(103,073	)	$	123,941	$	(98,275	)

During the three months ended June 30, 2018 and 2017, amortization expense for intangible assets was approximately $3.1 million and $1.1 million, respectively. Amortization expense for intangible assets was approximately $4.8 million and $2.2 million for the six months ended June 30, 2018 and 2017, respectively. As of June 30, 2018, remaining amortization expense is as follows (in thousands):



Six months remaining in 2018	$	6,291
2019	12,868
2020	11,989
2021	10,386
2022	8,406
Thereafter	27,172
Total	$	77,112