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INTANGIBLES | 12 Months Ended
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Dec. 31, 2017
INTANGIBLES [Abstract] |
INTANGIBLES | 5. INTANGIBLES We had no intangible assets as of December 31, 2016. In conjunction with the Merger, we recorded intangible assets of $21.1 million. As of December 31, 2017 our intangible assets consisted of the following:
﻿ |  |  |  |  |  |  |  |  |  |  |
﻿ | Dollars in Thousands
﻿ | December 31, 2017
﻿ | Cost |  | Accumulated Amortization |  | Net Book Value
﻿Technology | $ | 18,990 |  |  | $ | 475 |  |  | $ | 18,515 |
﻿Customer relationships | 250 |  |  | 42 |  |  | 208 |
﻿Backlog | 200 |  |  | 100 |  |  | 100 |
﻿Covenants not to compete | 30 |  |  | 15 |  |  | 15 |
﻿Trademark | 40 |  |  | 10 |  |  | 30 |
﻿IPR&D | 1,590 |  |  | — |  |  | 1,590 |
﻿ | $ | 21,100 |  |  | $ | 642 |  |  | $ | 20,458 |
﻿
﻿ |
﻿ | Estimated Useful Life
Technology | 20 years
Customer relationships | 3 years
Backlog | 1 year
Covenants not to compete | 1 year
Trademark | 2 years
Until our in-process research and development projects are completed, the assets are accounted for as indefinite-lived intangible assets and subject to impairment testing. For the year ended December 31, 2017, there was no impairment of IPR&D. Amortization expense for intangible assets was $0.6 million during the year ended December 31, 2017. Amortization expense for intangible assets is expected to be $1.2 million, $1.0 million, $1.0 million, $0.9 million and $0.9 million for each of the years ending December 31, 2018, 2019, 2020, 2021 and 2022, respectively.

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- Definition The entire disclosure for all or part of the information related to intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -URI http://asc.fasb.org/topic&trid=2144416 + Details
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