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Property and Equipment | 12 Months Ended
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Dec. 31, 2017
Property and Equipment |
Property and Equipment | 5. Property and Equipment Property and equipment consist of the following:
|  | December 31, |
|  | 2017 |  | 2016 |
|  | (In thousands) |
Computers, software and equipment |  | $ | 10,874 |  | $ | 6,735 |
Furniture and fixtures |  |  | 152 |  |  | 125 |
Leasehold and tenant improvements |  |  | 4,010 |  |  | 3,790 |
|  |  | 15,036 |  |  | 10,650 |
Less accumulated depreciation and amortization |  |  | (7,948) |  |  | (7,545) |
|  | $ | 7,088 |  | $ | 3,105 |
Depreciation and amortization expense related to property and equipment in 2017, 2016 and 2015 was $1.2 million, $712,000 and $519,000, respectively.

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- Definition The entire disclosure for long-lived, physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, accounting policies and methodology, roll forwards, depreciation, depletion and amortization expense, including composite depreciation, accumulated depreciation, depletion and amortization expense, useful lives and method used, income statement disclosures, assets held for sale and public utility disclosures. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -URI http://asc.fasb.org/topic&trid=2155823 + Details
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