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SIGNIFICANT ACCOUNTING POLICIES (Tables) | 12 Months Ended
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Dec. 31, 2019
Accounting Policies [Abstract] |
Estimated useful lives of property and equipment | The estimated useful lives are typically as follows:
Computer equipment and purchased software | 3 years
Machinery and equipment | 3-5 years
Furniture and fixtures | 5 years
Property and equipment are as follows (in thousands):
| December 31,
| 2019 |  | 2018
Computer equipment and purchased software | $ | 3,011 |  |  | $ | 3,167 |
Machinery and equipment | 699 |  |  | 821 |
Furniture and fixtures | 1,115 |  |  | 1,113 |
Leasehold improvements (1) | 3,897 |  |  | 3,897 |
Total | 8,722 |  |  | 8,998 |
Less accumulated depreciation and amortization (1) | (7,496 | ) |  | (6,655 | )
Property and equipment, net | $ | 1,226 |  |  | $ | 2,343 |
(1) In the fourth quarter 2019, the Company announced its decision to exit the San Jose California facility (“SJ Facility”) by March 31, 2020. The Company accelerated the amortization of its SJ Facility leasehold improvements over the remaining estimated life which is estimated to be through March 31, 2020. As of December 31, 2019, the net book value of the SJ Facility leasehold improvements was $0.9 million and will be fully amortized by March 31, 2020.
Advertising expense | Advertising expense was as follows (in thousands):
| Year ended December 31,
| 2019 |  | 2018 |  | 2017
Advertising expense | $ | 173 |  |  | $ | 67 |  |  | $ | 221 |

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- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(13)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 + Details
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