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Property and Equipment | 12 Months Ended
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Dec. 31, 2020
Property, Plant and Equipment [Abstract] |
Property and Equipment | Property and Equipment Property and equipment consisted of the following at December 31:
|  | Range of useful lives |  | 2020 |  | 2019
Computer equipment |  | 3 – 5 years |  | $ | 1,275,703 |  |  | $ | 1,260,630 |
Office equipment |  | 3 – 15 years |  | 806,906 |  |  | 878,350 |
Furniture and fixtures |  | 5 – 15 years |  | 638,903 |  |  | 646,505 |
Leasehold improvements |  | 3 – 15 years, or remaining lease term |  | 1,409,744 |  |  | 1,356,640 |
Total property and equipment, gross |  |  |  | 4,131,256 |  |  | 4,142,125 |
Less: accumulated depreciation and amortization |  |  |  | (3,557,087) |  |  | (3,394,329) |
Total property and equipment, net |  |  |  | $ | 574,169 |  |  | $ | 747,796 |
Depreciation expense, including amortization expense related to leasehold improvements, is included in general and administrative expense in the consolidated statements of operations. Depreciation expense was as follows for the years ended December 31:
|  | 2020 |  | 2019 |  | 2018
Depreciation expense |  | $ | 314,444 |  |  | $ | 269,619 |  |  | $ | 213,237 |

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- Definition The entire disclosure for long-lived, physical asset used in normal conduct of business and not intended for resale. Includes, but is not limited to, work of art, historical treasure, and similar asset classified as collections. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=120429125&loc=d3e99893-112916 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -URI http://asc.fasb.org/topic&trid=2155823 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=120429125&loc=SL120174063-112916 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=120429125&loc=d3e99779-112916 + Details
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