GOODWILL AND OTHER INTANGIBLE ASSETS

Goodwill was allocated to each segment based on their relative fair value at November 30, 2016, due to the reorganization of our reporting structure. After that date, we allocate goodwill to reporting units based on the reporting unit expected to benefit from the business combination. The change in the carrying amount of goodwill is as follows (in thousands):



	NAST			Global Forwarding			Robinson Fresh			All Other and Corporate			Total
December 31, 2016 balance	$	907,230		$	159,050		$	139,558		$	26,958		$	1,232,796
Acquisitions	3,673			24,918			—			—			28,591
Foreign currency translation	10,583			1,905			1,627			314			14,429
December 31, 2017 balance	921,486			185,873			141,185			27,272			1,275,816
Acquisitions	(40		)	33			—			—			(7		)
Foreign currency translation	(11,038		)	(3,877		)	(1,653		)	(319		)	(16,887		)
December 31, 2018 balance	$	910,408		$	182,029		$	139,532		$	26,953		$	1,258,922

Goodwill is tested at least annually for impairment on November 30, or more frequently if events or changes in circumstances indicate that the asset might be impaired. We first perform a qualitative assessment to determine whether it is more likely than not that the fair value of our reporting units is less than their respective carrying value (“Step Zero Analysis”). If the Step Zero Analysis indicates it is more likely than not that the fair value of our reporting units is less than their respective carrying value, an additional impairment assessment is performed (“Step One Analysis”). Based on our Step Zero Analysis, we determined that the more likely than not criteria had not been met, and therefore a Step 1 Analysis was not required.

No goodwill or intangible asset impairment has been recorded in any period presented.

Identifiable intangible assets consisted of the following at December 31 (in thousands):



	2018							2017
	Cost		Accumulated Amortization			Net		Cost		Accumulated Amortization			Net
Finite-lived intangibles
Customer relationships	$	254,293	$	(156,006	)	$	98,287	$	263,093	$	(122,103	)	$	140,990
Non-competition agreements	300		(240		)	60		300		(180		)	120
Total finite-lived intangibles	254,593		(156,246		)	98,347		263,393		(122,283		)	141,110
Indefinite-lived intangibles
Trademarks	10,475		—			10,475		10,475		—			10,475
Total intangibles	$	265,068	$	(156,246	)	$	108,822	$	273,868	$	(122,283	)	$	151,585

Amortization expense for other intangible assets was (in thousands):



2018	$	36,886
2017	36,273
2016	27,053

Finite-lived intangible assets, by reportable segment, as of December 31, 2018, will be amortized over their remaining lives as follows (in thousands):



	NAST		Global Forwarding		Robinson Fresh		All Other and Corporate		Total
2019	$	7,800	$	28,413	$	—	$	—	$	36,213
2020	240		25,710		—		—		25,950
2021	240		12,188		—		—		12,428
2022	240		12,188		—		—		12,428
2023	240		9,595		—		—		9,835
Thereafter	219		1,274		—		—		1,493
Total									$	98,347