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. As of March 31, 2019, there were no indicators of impairment. The Partnership's annual testing date is the first day of the fourth quarter. There were no impairments for any period presented.

A summary of changes in the Partnership’s carrying value of goodwill for the three months ended March 31, 2019 and March 25, 2018 is as follows:



(In thousands)	Goodwill (gross)			Accumulated Impairment Losses			Goodwill (net)
Balance as of December 31, 2018	$	258,587		$	(79,868	)	$	178,719
Foreign currency translation	1,220			—			1,220
Balance as of March 31, 2019	$	259,807		$	(79,868	)	$	179,939

Balance as of December 31, 2017	$	263,698		$	(79,868	)	$	183,830
Foreign currency translation	(1,539		)	—			(1,539		)
Balance as of March 25, 2018	$	262,159		$	(79,868	)	$	182,291

As of March 31, 2019, December 31, 2018, and March 25, 2018, the Partnership’s other intangible assets consisted of the following:



(In thousands)	Gross Carrying Amount		Accumulated Amortization			Net Carrying Value
March 31, 2019
Other intangible assets:
Trade names	$	35,665	$	—		$	35,665
License / franchise agreements	3,389		(2,412		)	977
Total other intangible assets	$	39,054	$	(2,412	)	$	36,642

December 31, 2018
Other intangible assets:
Trade names	$	35,394	$	—		$	35,394
License / franchise agreements	3,379		(2,397		)	982
Total other intangible assets	$	38,773	$	(2,397	)	$	36,376

March 25, 2018
Other intangible assets:
Trade names	$	36,188	$	—		$	36,188
License / franchise agreements	3,364		(1,842		)	1,522
Total other intangible assets	$	39,552	$	(1,842	)	$	37,710

Amortization expense of other intangible assets is expected to continue to be immaterial going forward.