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Intangible Assets Other Than Goodwill | 12 Months Ended
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Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract] |
Intangible Assets Disclosure [Text Block] | Note 7—Intangible Assets Other Than Goodwill Intangible assets other than goodwill consist primarily of licenses, product lines, customer relationships and trademarks. Amortized intangible assets are included in intangibles in the accompanying consolidated balance sheets. Trademarks are disclosed separately in the accompanying consolidated balance sheets. Intangible assets are as follows (in thousands, except for weighted useful lives):
|  |  |  |  | December 31, 2020 |  |  | December 31, 2019 |
|  | Weighted Useful Lives |  |  | Gross Carrying Amount |  |  | Accumulated Amortization |  |  | Net Amount |  |  | Gross Carrying Amount |  |  | Accumulated Amortization |  |  | Net Amount |
|  | (Years) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amortized Intangible Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Licenses |  | 5.81 |  |  | $ | 20,130 |  |  | $ | (20,130 | ) |  | $ | — |  |  | $ | 20,130 |  |  | $ | (19,988 | ) |  | $ | 142 |
Product lines |  | 10.36 |  |  |  | 33,858 |  |  |  | (31,827 | ) |  |  | 2,031 |  |  |  | 33,858 |  |  |  | (30,812 | ) |  |  | 3,046 |
Customer relationships |  | 4.90 |  |  |  | 3,152 |  |  |  | (3,152 | ) |  |  | — |  |  |  | 3,152 |  |  |  | (3,152 | ) |  |  | — |
Trade names |  | 5.00 |  |  |  | 3,000 |  |  |  | (3,000 | ) |  |  | — |  |  |  | 3,000 |  |  |  | (3,000 | ) |  |  | — |
Non-compete agreements |  | 5.00 |  |  |  | 200 |  |  |  | (200 | ) |  |  | — |  |  |  | 200 |  |  |  | (200 | ) |  |  | — |
Total amortized intangible assets |  |  |  |  | $ | 60,340 |  |  | $ | (58,309 | ) |  | $ | 2,031 |  |  | $ | 60,340 |  |  | $ | (57,152 | ) |  | $ | 3,188 |
Unamortized Intangible Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Trademarks |  |  |  |  | $ | 300 |  |  | $ | — |  |  | $ | 300 |  |  | $ | 300 |  |  | $ | — |  |  | $ | 300 |
In 2019, the Company assessed the recoverability of the Maui product lines and determined that the fair value was less than its carrying amount. As a result, the Company recorded an impairment charge of $9.4 million. The fair value determination is categorized as Level 3 in the fair value hierarchy due to its use of internal projections and unobservable measurement inputs. For the year ended December 31, 2020, 2019 and 2018, the Company’s aggregate amortization expense related to intangible assets was $1.2 million, $4.7 million and $4.9 million, respectively. The Company currently estimates continuing future amortization expense to be approximately (in thousands):
2021 |  | $ | 1,015 |
2022 |  |  | 1,016 |
|  | $ | 2,031 |

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- Definition The entire disclosure for all or part of the information related to 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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