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Goodwill and Other Intangible Assets | 12 Months Ended
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Dec. 31, 2020
Goodwill And Intangible Assets Disclosure [Abstract] |
Goodwill and Other Intangible Assets | 5. Goodwill and Other Intangible Assets The following table sets forth changes in goodwill:
(in thousands) |  |  |  |
Balance at December 31, 2019 |  | $ | 17,289 |
Additions |  |  | — |
Balance at December 31, 2020 |  | $ | 17,289 |
The following table represents our other intangible assets by major asset class as of the dates indicated, which are included in Investments and Other Assets on the accompanying consolidated balance sheet as of December 31:
(in thousands) |  | 2020 |  |  | 2019 |
Amortizable Intangible Assets |  |  |  |  |  |  |  |
Customer related |  |  |  |  |  |  |  |
Gross carrying amount |  | $ | — |  |  | $ | 550 |
Accumulated amortization |  |  | — |  |  |  | (321 | )
|  | $ | — |  |  | $ | 229 |
Unamortized Intangible Assets |  |  |  |  |  |  |  |
Domain names |  | $ | 571 |  |  | $ | 571 |
The customer related intangible assets were amortized on a straight-line basis over 12 months. Amortization expense was $229,000 and $321,000 for 2020 and 2019, respectively.

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- Definition The entire disclosure for goodwill and intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -URI http://asc.fasb.org/topic&trid=2144416 + Details
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