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Amortizable Intangible Assets | 9 Months Ended
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Sep. 30, 2019
Amortizable Intangible Assets Disclosure [Abstract] |
Amorizable Intangible Assets Disclosure [Text Block] | 6. Amortizable Intangible Assets Amortizable i ntangible assets consist of the following:
|  |  |  |  | September 30, 2019 |  |  | December 31, 2018
|  |  |  |  | (in thousands)
Amortizable intangible assets: | Weighted Average Life* |  | Gross |  | Accumulated Amortization |  | Net |  | Gross |  | Accumulated Amortization |  | Net
Distribution agreements/customer relationships | 10.0 | Years |  | $ | 22,014 |  | $ | (10,209) |  | $ | 11,805 |  | $ | 22,657 |  | $ | (9,509) |  | $ | 13,148
Existing technology | 6.4 | Years |  |  | 40,962 |  |  | (18,534) |  |  | 22,428 |  |  | 41,268 |  |  | (16,215) |  |  | 25,053
Trade names | 7.0 | Years |  |  | 7,578 |  |  | (3,231) |  |  | 4,347 |  |  | 7,828 |  |  | (2,861) |  |  | 4,967
In-process R&D | - | Years |  |  | - |  |  | - |  |  | - |  |  | 1,387 |  |  | (30) |  |  | 1,357
Patents | - | Years |  |  | 204 |  |  | (204) |  |  | - |  |  | 211 |  |  | (204) |  |  | 7
Total amortizable intangible assets |  |  |  | $ | 70,758 |  | $ | (32,178) |  | $ | 38,580 |  | $ | 73,351 |  | $ | (28,819) |  | $ | 44,532
* Weighted average life as of September 30, 2019.
Intangible asset amortization expense from continuing operations was $1.4 million and $1.5 million for each of the three months ended September 30, 2019 and 2018, and was $4.3 million and $4.0 million for the nine months ended September 30, 2019 and 2018, respectively. Amortization expense of existing amortizable intangible assets is currently estimated to be $5.6 million for the year ending December 31, 2019, $5.5 million for the year ending December 31, 2020, $5.5 million for the year ending December 31, 2021, $5.4 million for the year ending December 31, 2022, $5.3 million for the year ending December 31, 2023, and $5.2 million for the year ending December 31, 2024. During the three months ended June 30, 2019, and as a result of the ongoing evaluation of its capitalized research and development activities, the Company recorded an impairme nt charge of $0.9 million related to certain of its in-process research and development intangible assets and reclassified $0.4 million as completed technology. During the three months ended September 30, 2019, the Company recorded an impairment charge o f $0.5 million related to customer relationships, existing technology, and trade names intangible assets as a result of the decision to discontinue one of the Company’s product lines and cease operations in its facility in North Carolina. There were no im pairment charges recognized during the three and nine months ended September 30, 2018.

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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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