5 Goodwill and Other Intangibles

The carrying amount of goodwill was $358 million and $360 million at June 30, 2018 and December 31, 2017, respectively. During the six months ended June 30, 2018, the effect of foreign currency translation decreased goodwill by $2 million.

The Company’s intangible assets included in the consolidated balance sheets are detailed as follows (dollars in thousands):


	June 30, 2018						December 31, 2017
	Gross Carrying Amount		Accumulated Amortization		Weighted- Average Amortization Period		Gross Carrying Amount		Accumulated Amortization		Weighted- Average Amortization Period
Capitalized software	$	442,294	$	294,533		5 years	$	438,652	$	285,461		5 years
Purchased intangibles		167,762		140,521		11 years		169,870		138,750		11 years
Trademarks and IPR&D		13,815		—		—		13,923		—		—
Licenses		5,716		4,767		6 years		5,840		4,628		6 years
Patents and other intangibles		75,042		46,633		8 years		72,815		43,866		8 years

Total	$	704,629	$	486,454		7 years	$	701,100	$	472,705		7 years

The gross carrying value of intangible assets and accumulated amortization for intangible assets decreased by $15 million and $11 million, respectively, in the six months ended June 30, 2018 due to the effects of foreign currency translation. Amortization expense for intangible assets was $12 million for both the three months ended June 30, 2018 and July 1, 2017. Amortization expense for intangible assets was $25 million and $22 million for the six months ended June 30, 2018 and July 1, 2017, respectively. Amortization expense for intangible assets is estimated to be $52 million per year for each of the next five years.

In July 2018, the Company acquired the sole intellectual property rights to the Desorption Electrospray Ionization (“DESI”) imaging technology for $30 million. DESI is a mass spectrometry imaging technique that is used to develop medical therapies.