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Furniture, Equipment, Purchased Software and Leasehold Improvements | 12 Months Ended
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Dec. 31, 2018
Tradeweb Markets LLC |
Entity Information [Line Items] |
Furniture, Equipment, Purchased Software and Leasehold Improvements | 7. Furniture, Equipment, Purchased Software and Leasehold Improvements The components of furniture, equipment, purchased software and leasehold improvements, net of accumulated depreciation and amortization are as follows (in thousands):
|  | Successor |  |  | Predecessor
|  | December 31, |  |  | December 31,
|  | 2018 |  |  | 2017
Computer hardware |  | $ | 22,818 |  |  | $ | 67,852
Leasehold improvements |  |  | 12,339 |  |  |  | 27,139
Purchased software |  |  | 3,039 |  |  |  | 12,991
Furniture and office equipment |  |  | 2,968 |  |  |  | 6,350
Accumulated depreciation and amortization |  |  | (3,036) |  |  |  | (87,301)
Furniture, equipment, purchased software and leasehold improvements, net of accumulated depreciation and amortization |  | $ | 38,128 |  |  | $ | 27,031
For October 1, 2018 to December 31, 2018, January 1, 2018 to September 30, 2018 and for the years ended December 31, 2017 and 2016, depreciation and amortization expense related to these assets was $3,094,000, $9,270,000, $11,959,000 and $12,910,000 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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -URI http://asc.fasb.org/topic&trid=2155823 + Details
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