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 September 23, 2018, 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 nine months ended September 23, 2018 and September 24, 2017 is as follows:



(In thousands)	Goodwill (gross)			Accumulated Impairment Losses			Goodwill (net)
Balance as of December 31, 2017	$	263,698		$	(79,868	)	$	183,830
Foreign currency translation	(1,826		)	—			(1,826		)
Balance as of September 23, 2018	$	261,872		$	(79,868	)	$	182,004

Balance as of December 31, 2016	$	259,528		$	(79,868	)	$	179,660
Foreign currency translation	5,350			—			5,350
Balance as of September 24, 2017	$	264,878		$	(79,868	)	$	185,010

As of September 23, 2018, December 31, 2017, and September 24, 2017, the Partnership’s other intangible assets consisted of the following:



(In thousands)	Gross Carrying Amount		Accumulated Amortization			Net Carrying Value
September 23, 2018
Other intangible assets:
Trade names	$	36,125	$	—		$	36,125
License / franchise agreements	3,351		(2,345		)	1,006
Total other intangible assets	$	39,476	$	(2,345	)	$	37,131

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

September 24, 2017
Other intangible assets:
Trade names	$	36,794	$	—		$	36,794
License / franchise agreements	3,361		(1,623		)	1,738
Total other intangible assets	$	40,155	$	(1,623	)	$	38,532

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