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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 |
(3) | Property and Equipment
Depreciation and amortization of property and equipment is calculated on the straight-line method based on estimated useful lives of the assets. Leasehold improvements are depreciated over the shorter of their useful life or lease term. Property and equipment consist of the following at December 31(in thousands):
|  | 2020 |  |  | 2019 |
Computers and software |  | $ | 596 |  |  | $ | 572 |
Furniture, fixtures, and equipment |  |  | 400 |  |  |  | 299 |
Manufacturing and testing equipment |  |  | 3,874 |  |  |  | 3,444 |
Construction in process |  |  | 120 |  |  |  | 18 |
Leasehold improvements |  |  | 932 |  |  |  | 911 |
|  |  | 5,922 |  |  |  | 5,244 |
Less accumulated depreciation |  |  | (3,545 | ) |  |  | (3,118 | )
|  | $ | 2,377 |  |  | $ | 2,126 |
Depreciation expense was $0.5 million for the years ended December 31, 2020 and 2019, respectively.

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- Definition The entire disclosure for intangible assets and 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 350 -URI http://asc.fasb.org/topic&trid=2144416 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 + Details
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