Intangible Assets

3 Months Ended

Mar. 31, 2019

Goodwill And Intangible Assets Disclosure [Abstract]

Intangible Assets

5. Intangible Assets

Intangible assets were comprised of the following:

	March 31, 2019			December 31, 2018
Customer relationships	$	6,019		$	6,234
Developed technology		4,105			4,322
Trade name		2,371			2,497
		12,495			13,053
Accumulated amortization		(3,968	)		(3,828	)
Intangible assets, net	$	8,527		$	9,225

The following summarizes changes in intangible assets:

	Three Months Ended March 31,
	2019			2018
Balance at beginning of period	$	9,225		$	11,021
Changes in intangible assets (Akers National Roll)		(292	)		0
Amortization of intangible assets		(298	)		(314	)
Other, primarily impact from changes in foreign currency exchange rates		(108	)		35
Balance at end of period	$	8,527		$	10,742

Changes during the three months ended March 31, 2019, represent an impairment charge on intangible assets of Akers National Roll Company.