Goodwill and trade names are not subject to amortization. As of December 31, 2023 and 2022, the carrying values were $98.1 million for goodwill and $500.5 million for trade names. We evaluate goodwill and trade names for impairment

annually or more frequently when an event occurs or circumstances change that indicates the carrying value of a reporting unit may not be recoverable.

The changes in the carrying amount of goodwill are as follows (in thousands):

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The carrying value of our trade names was $500.5 million, which consists of $207.5 million for Norwegian Cruise Line, $140.0 million for Oceania Cruises and $153.0 million for Regent Seven Seas Cruises.