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General and Administrative Expense (Tables) | 12 Months Ended
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Dec. 31, 2018
General and Administrative Expense [Abstract] |
General and Administrative Expense | General and administrative expenses for the years ended December 31, 2016, 2017 and 2018 were as follows:
|  | December 31,
|  | 2016 |  | 2017 |  | 2018
Management fees – related parties |  | $ | 11,611 |  |  | $ | 13,511 |  |  | $ | 16,536 |
Professional fees (legal and accounting) |  | 528 |  |  | 687 |  |  | 833 |
Compensation for Directors and Officers |  | 1,907 |  |  | 468 |  |  | 477 |
Listing fees and expenses |  | 107 |  |  | 96 |  |  | 115 |
Miscellaneous |  | 1,228 |  |  | 1,356 |  |  | 1,281 |
Total |  | $ | 15,381 |  |  | $ | 16,118 |  |  | $ | 19,242 |

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