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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 | (2) Property and Equipment Property and equipment consisted of the following (in thousands):
|  | Years ended December 31, |
|  | 2019 (1) |  | 2020 (1) |
Computer and other related equipment |  | $ | 19,274 |  | $ | 13,278 |
Purchased and internally developed software |  |  | 2,055 |  |  | 2,058 |
Furniture and fixtures |  |  | 1,033 |  |  | 1,271 |
Leasehold improvements |  |  | 1,737 |  |  | 1,737 |
|  | $ | 24,099 |  | $ | 18,344 |
Less: accumulated depreciation and amortization |  |  | (21,104 | ) |  | (15,597 | )
Property and equipment, net |  | $ | 2,995 |  | $ | 2,747 |
(1) | Includes the original cost of fully-depreciated fixed assets which were $19.6 million and $ 13.6 million at December 31, 2019 and 2020, respectively.
Depreciation and amortization expense related to property and equipment was approximately $1.5 million and $1.6 million for the years ended December 31, 2019 and 2020, respectively.

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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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