Goodwill and Other Intangible Assets:

Goodwill and other indefinite-lived intangible assets, including trade-names are reviewed for impairment annually, or more frequently if indicators of impairment exist. The Partnership performed its annual impairment test as of the first days of the fourth quarter in 2018 and 2017, respectively, and concluded there was no impairment of the carrying value of goodwill or other indefinite-lived intangible assets in either period.

A summary of changes in the Partnership's carrying value of goodwill for the years ended December 31, 2018 and December 31, 2017 is as follows:



(In thousands)	Goodwill (gross)			Accumulated Impairment Losses			Goodwill (net)
Balance as of December 31, 2016	$	259,528		$	(79,868	)	$	179,660
Foreign currency exchange translation	4,170			—			4,170
Balance as of December 31, 2017	263,698			(79,868		)	183,830
Foreign currency exchange translation	(5,111		)	—			(5,111		)
Balance as of December 31, 2018	$	258,587		$	(79,868	)	$	178,719

As of December 31, 2018 and December 31, 2017, the Partnership's other intangible assets consisted of the following:



(In thousands)	Weighted Average Amortization Period	Gross Carrying Amount		Accumulated Amortization			Net Carrying Value
December 31, 2018
Other intangible assets:
Trade names	—	$	35,394	$	—		$	35,394
License / franchise agreements	6.9 years	3,379		(2,397		)	982
Total other intangible assets		$	38,773	$	(2,397	)	$	36,376

December 31, 2017
Other intangible assets:
Trade names	—	$	36,531	$	—		$	36,531
License / franchise agreements	5.9 years	3,360		(1,827		)	1,533
Total other intangible assets		$	39,891	$	(1,827	)	$	38,064

Amortization expense of other intangible assets for 2018, 2017 and 2016 was immaterial and is expected to be immaterial going forward.