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Goodwill and Indefinite Lived Intangible Assets | 3 Months Ended
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Mar. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract] |
Goodwill and Indefinite Lived Intangible Assets | 8. Goodwill and Indefinite Lived Intangible Assets
Goodwill |  |  |
Balance as of December 31, 2017 |  |  | - |
Additions |  | $ | 2,534,275 |
Impairment |  |  | - |
Balance as of December 31, 2018 and March 31, 2019 |  | $ | 2,534,275 |
Indefinite Lived Intangible Assets |  |  |
Balance as of December 31, 2017 |  |  | - |
Additions |  | $ | 770,000 |
Impairment |  |  | - |
Balance as of December 31, 2018 and March 31, 2019 |  | $ | 770,000 |
Indefinite lived intangible assets consist of trade secrets and trademarks related to the acquisition of EnP Investments LLC.
Definite Life Intangible Assets |  |  |
Balance as of December 31, 2017 |  |  | - |
Additions |  | $ | 2,398,000 |
Amortization |  |  | (40,000 | )
Balance as of December 31, 2018 |  |  | 2,358,000 |
Amortization |  |  | (44,000 | )
Balance as of March 31, 2019 |  | $ | 2,314,000 |
Definite life intangible assets consists of customer relationships related to the acquisition of EnP Investments LLC (note 3). Customer relationships are amortized over their estimated useful life of 15 years. Estimated amortization expense over the next five years is as follows:
2019 |  | $ | 176,000 |
2020 |  |  | 176,000 |
2021 |  |  | 176,000 |
2022 |  |  | 160,000 |
2023 |  |  | 160,000 |

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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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