| INTANGIBLE ASSETS/LIABILITIES OTHER THAN GOODWILL |
NOTE 8: INTANGIBLE ASSETS OTHER THAN GOODWILL Net Book Value of Intangible Assets other than Goodwill as at December 31, 2020 | | Acquisition Cost | | | Accumulated Amortization | | Net Book Value December 31, 2020 | Trade name | | $ | 90,000 | | | $ | (43,175) | | | $ | 46,825 | Port terminal operating rights | | | 53,152 | | | | (13,835) | | | | 39,317 | Customer relationships | | | 35,490 | | | | (23,069) | | | | 12,421 | Total Intangible assets | | $ | 178,642 | | | $ | (80,079) | | | $ | 98,563 |
Net Book Value of Intangible Assets other than Goodwill as at December 31, 2019 | | Acquisition Cost | | | Accumulated Amortization | | Net Book Value December 31, 2019 | Trade name | | $ | 90,000 | | | $ | (40,357) | | | $ | 49,643 | Port terminal operating rights | | | 53,152 | | | | (12,837) | | | | 40,315 | Customer relationships | | | 35,490 | | | | (21,294) | | | | 14,196 | Favorable lease terms – Navios Containers | | | 31,342 | | | | (16,855) | | | | 14,487 | Navios Containers deconsolidation | | | (31,342) | | | | 16,855 | | | | (14,487) | Total Intangible assets | | $ | 178,642 | | | $ | (74,488) | | | $ | 104,154 |
Amortization expense and write offs for the years ended December 31, 2020, 2019 and 2018 were as follows: | | Amortization Expense and Write Offs Year Ended December 31, 2020 | | | Amortization Expense and Write Offs Year Ended December 31, 2019 | | | Amortization Expense and Write Offs Year Ended December 31, 2018 | | Trade name | | $ | 2,818 | | | $ | 2,811 | | | $ | 2,811 | | Port terminal operating rights | | | 998 | | | | 999 | | | | 950 | | Customer relationships | | | 1,775 | | | | 1,774 | | | | 1,774 | | Total | | $ | 5,591 | | | $ | 5,584 | | | $ | 5,535 | |
The remaining aggregate amortization of acquired intangibles as of December 31, 2020 was as follows: Description | | Within one year | | | Year Two | | | Year Three | | | Year Four | | | Year Five | | | Thereafter | | | Total | | Trade name | | $ | 2,811 | | | $ | 2,811 | | | $ | 2,811 | | | $ | 2,818 | | | $ | 2,811 | | | $ | 32,763 | | | $ | 46,825 | | Port terminal operating rights | | | 995 | | | | 995 | | | | 995 | | | | 995 | | | | 995 | | | | 34,342 | | | | 39,317 | | Customer relationships | | | 1,775 | | | | 1,775 | | | | 1,775 | | | | 1,775 | | | | 1,775 | | | | 3,546 | | | | 12,421 | | Total amortization | | $ | 5,581 | | | $ | 5,581 | | | $ | 5,581 | | | $ | 5,588 | | | $ | 5,581 | | | $ | 70,651 | | | $ | 98,563 | |
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