Table:
|  |  | As of December 31, |  |
| --- | --- | --- | --- |
|  | Useful life in years | 2019 | 2018 |
| Furniture and equipment | 5 | $1,785 | $1,189 |
| Leasehold improvements (1) | 5 | 4,074 | 2,776 |
| System hardware | 5 | 1,596 | 1,404 |
| Office computers | 3 | 5,309 | 3,745 |
| Computer and system software | 3 | 1,451 | 1,385 |
|  |  | 14,215 | 10,499 |
| Less accumulated depreciation and amortization |  | (7,931) | (5,849) |
| Property and equipment, net |  | $6,284 | $4,650 |
Paragraphs:
Property and equipment consist of the following (in thousands):
(1) Lesser of the lease term or the estimated useful lives of the improvements, which generally may be up to 5 years.
Depreciation and amortization expense for the years ended December 31, 2019, 2018 and 2017 was $2.2 million, $1.8 million and $1.9 million, respectively.
Question:
What is the change in System hardware from December 31, 2019 to December 31, 2018?
Answer: 1596-1404 = 192