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Schedule of Intangible Assets (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Finite And Indefinite Lived Intangible Assets By Major Class [Line Items] |  |  |
Total net amortized intangible assets | $ 955 | $ 1,190 |
Amortization | (269) | (235) |
Total net amortized intangible assets | 686 | 955 |
Total net intangible assets | 3,392 | 3,627 |
Total net intangible assets | 3,123 | 3,392 |
NLEX [Member] | Trade Name [Member] |  |  |
Finite And Indefinite Lived Intangible Assets By Major Class [Line Items] |  |  |
Unamortized intangible assets | $ 2,437 | $ 2,437 | $ 2,437
Customer Network [Member] | HGP [Member] |  |  |
Finite And Indefinite Lived Intangible Assets By Major Class [Line Items] |  |  |
Finite-Lived intangible asset, useful life | 12 years | 12 years |
Finite-Lived intangible assets, remaining amortization period | 2 years | 3 years |
Total net amortized intangible assets | $ 92 | $ 114 |
Amortization | (30) | (22) |
Total net amortized intangible assets | $ 62 | $ 92 |
HGP Trade Name [Member] |  |  |
Finite And Indefinite Lived Intangible Assets By Major Class [Line Items] |  |  |
Finite-Lived intangible asset, useful life | 14 years | 14 years |
Finite-Lived intangible assets, remaining amortization period | 4 years | 5 years |
Total net amortized intangible assets | $ 642 | $ 746 |
Amortization | (129) | (104) |
Total net amortized intangible assets | $ 513 | $ 642 |
Customer Relationships [Member] | NLEX [Member] |  |  |
Finite And Indefinite Lived Intangible Assets By Major Class [Line Items] |  |  |
Finite-Lived intangible asset, useful life | 7 years 7 months 6 days | 7 years 7 months 6 days |
Finite-Lived intangible assets, remaining amortization period | 1 year | 2 years |
Total net amortized intangible assets | $ 221 | $ 330 |
Amortization | (110) | (109) |
Total net amortized intangible assets | $ 111 | $ 221 |

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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 + Details
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