Goodwill and Other Intangible Assets (Tables)

6 Months Ended

Jun. 30, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Changes in Intangible Assets and Goodwill

We are continuing to amortize certain patents, trade names, customer relationships, customer contracts and technology assets that have finite lives. The gross carrying value, accumulated amortization and net values of intangible assets and goodwill as of June 30, 2019 and December 31, 2018, were as follows:

As of June 30, 2019 (in thousands)	Weighted average amortization life in years	Gross carrying amount	Accumulated amortization	Net carrying amount
Amortized intangible assets:
AEC trade names	15	$140	$(131)	$9
AEC technology	15	370	(327)	43
Customer relationships	15	48,421	(10,497)	37,924
Customer contracts	6	17,471	(9,471)	8,000
Other intangibles	5	322	(209)	113
Net amortized intangible assets		$66,724	$(20,635)	$46,089
Unamortized intangible assets:
MC Goodwill		$68,353	$—	$68,353
AEC Goodwill		95,730	—	95,730
Total unamortized intangible assets:		$164,083	$—	$164,083

As of December 31, 2018 (in thousands)	Weighted average amortization life in years	Gross carrying amount	Accumulated amortization	Net carrying amount
Amortized intangible assets:
AEC trade names	15	$140	$(129)	$11
AEC technology	15	370	(314)	56
Customer relationships	15	48,421	(8,883)	39,538
Customer contracts	6	17,471	(8,015)	9,456
Other intangibles	5	322	(177)	145
Net amortized intangible assets		$66,724	$(17,518)	$49,206
Unamortized intangible assets:
MC Goodwill		$68,652	$—	$68,652
AEC Goodwill		95,730	—	95,730
Total unamortized intangible assets:		$164,382	$—	$164,382

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The changes in intangible assets, net and goodwill from December 31, 2018 to June 30, 2019, were as follows:

(in thousands)	December 31, 2018	Amortization	Currency Translation	June 30, 2019
Amortized intangible assets:
AEC trade names	$11	$(2)	$—	$9
AEC technology	56	(13)	—	43
Customer relationships	39,538	(1,614)	—	37,924
Customer contracts	9,456	(1,456)	—	8,000
Other intangibles	145	(32)	—	113
Net amortized intangible assets	$49,206	$(3,117)	$—	$46,089
Unamortized intangible assets:
MC Goodwill	$68,652	$—	$(299)	$68,353
AEC Goodwill	95,730	—	—	95,730
Total unamortized intangible assets:	$164,382	$—	$(299)	$164,083

Schedule of Estimated Amortization Expense

Estimated amortization expense of intangibles for the years ending December 31, 2019 through 2023, is as follows:

	Annual amortization
Year	(in thousands)
2019	$6,234
2020	6,234
2021	6,163
2022	3,949
2023	3,228