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Schedule of Intangible Assets (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Finite And Indefinite Lived Intangible Assets By Major Class [Line Items] |  |  |
Total net amortized intangible assets | $ 1,685 | $ 1,945 |
Amortization | (245) | (260) |
Total net amortized intangible assets | 1,440 | 1,685 |
Total net intangible assets | 4,122 | 4,382 |
Total net intangible assets | 3,877 | 4,122 |
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 | 6 years 2 months 12 days | 7 years 2 months 12 days |
Total net amortized intangible assets | $ 158 | $ 178 |
Amortization | (22) | (20) |
Total net amortized intangible assets | $ 136 | $ 158 |
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 | 8 years 2 months 12 days | 9 years 2 months 12 days |
Total net amortized intangible assets | $ 953 | $ 1,059 |
Amortization | (103) | (106) |
Total net amortized intangible assets | $ 850 | $ 953 |
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 | 4 years 1 month 6 days | 5 years 1 month 6 days |
Total net amortized intangible assets | $ 550 | $ 660 |
Amortization | (110) | (110) |
Total net amortized intangible assets | $ 440 | $ 550 |
NLEX's Website [Member] | NLEX [Member] |  |  |
Finite And Indefinite Lived Intangible Assets By Major Class [Line Items] |  |  |
Finite-Lived intangible asset, useful life | 5 years | 5 years |
Finite-Lived intangible assets, remaining amortization period | 1 year 4 months 24 days | 2 years 4 months 24 days |
Total net amortized intangible assets | $ 24 | $ 33 |
Amortization | (10) | (9) |
Total net amortized intangible assets | $ 14 | $ 24 |
Noncompete Agreements | NLEX [Member] |  |  |
Finite And Indefinite Lived Intangible Assets By Major Class [Line Items] |  |  |
Finite-Lived intangible asset, useful life |  | 2 years |
Finite-Lived intangible assets, remaining amortization period |  | 0 years |
Total net amortized intangible assets |  | $ 15 |
Amortization |  | $ (15) |

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