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Intangible Assets | 9 Months Ended
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Sep. 30, 2019
Goodwill and Intangible Assets Disclosure [Abstract] |
Intangible Assets |
5. | Intangible Assets
The following table summarizes information relating to the Company’s definite-lived intangible assets:
|  | Weighted Average |  |  | September 30, 2019 |  |  | December 31, 2018 |
|  | Amortization Period |  |  | Gross Carrying |  |  | Accumulated |  |  | Net Carrying |  |  | Gross Carrying |  |  | Accumulated |  |  | Net Carrying |
Intangibles (amount in thousands) |  | (Years) |  |  | Amount |  |  | Amortization |  |  | Amount |  |  | Amount |  |  | Amortization |  |  | Amount |
Patent |  | 11 |  |  | $ | 740 |  |  | $ | (353 | ) |  | $ | 387 |  |  | $ | 728 |  |  | $ | (336 | ) |  | $ | 392 |
Software |  | 3 |  |  |  | 414 |  |  |  | (407 | ) |  |  | 7 |  |  |  | 410 |  |  |  | (403 | ) |  |  | 7 |
Customer relationships |  | 10 |  |  |  | 3,370 |  |  |  | (2,657 | ) |  |  | 713 |  |  |  | 3,370 |  |  |  | (2,491 | ) |  |  | 879 |
Permit |  | 10 |  |  |  | 545 |  |  |  | (545 | ) |  |  | ― |  |  |  | 545 |  |  |  | (538 | ) |  |  | 7 |
Total |  |  |  |  | $ | 5,069 |  |  | $ | (3,962 | ) |  | $ | 1,107 |  |  | $ | 5,053 |  |  | $ | (3,768 | ) |  | $ | 1,285 |
The intangible assets noted above are amortized on a straight-line basis over their useful lives with the exception of customer relationships which are being amortized using an accelerated method. The Company had only one definite-lived permit that was subject to amortization. This definite-lived permit was fully amortized in the first quarter of 2019. The following table summarizes the expected amortization over the next five years for our definite-lived intangible assets:
|  | Amount |
Year |  | (In thousands) |
2019 (remaining) |  | $ | 61 |
2020 |  |  | 219 |
2121 |  |  | 199 |
2022 |  |  | 173 |
2023 |  |  | 132 |
Amortization expense relating to the definite-lived intangible assets as discussed above was $60,000 and $194,000 for the three and nine months ended September 30, 2019, respectively, and $84,000 and $253,000 for the three and nine months ended September 30, 2018, respectively.

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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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