Goodwill and trade names are not subject to amortization. As of December 31, 2022 and 2021, 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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For the year ended December 31, 2020, we impaired our trade names for Oceania Cruises and Regent Seven Seas Cruises by $170.0 million and $147.0 million, respectively. Following these impairments, 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.