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Property and Equipment, net | 12 Months Ended
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Dec. 31, 2017
Property Plant And Equipment [Abstract] |
Property and Equipment, net | Note 5. Property and Equipment, net Property and equipment, net at December 31, 2017 and 2016, consisted of the following (in thousands):
|  | December 31, |
|  | 2017 |  |  | 2016 |
Leasehold improvements |  | $ | 5,698 |  |  | $ | 5,678 |
Machinery and equipment |  |  | 2,028 |  |  |  | 1,925 |
Demonstration equipment |  |  | 177 |  |  |  | 167 |
Furniture and fixtures |  |  | 904 |  |  |  | 871 |
Computer equipment |  |  | 514 |  |  |  | 603 |
Computer software |  |  | 2,932 |  |  |  | 2,908 |
Consigned equipment |  |  | 1,190 |  |  |  | 1,058 |
Construction-in-progress |  |  | 70 |  |  |  | 62 |
Total property and equipment, gross |  |  | 13,513 |  |  |  | 13,272 |
Accumulated depreciation and amortization |  |  | (11,394 | ) |  |  | (10,287 | )
Total property and equipment, net |  | $ | 2,119 |  |  | $ | 2,985 |
Depreciation and amortization expense related to property and equipment, net was $1.2 million, $1.1 million and $1.1 million for the years ended December 31, 2017, 2016 and 2015, respectively. The impairment of long-lived assets were zero, $0.2 million, and zero for the years ended December 31, 2017, 2016 and 2015, respectively. As part of the Company’s 2016 review of property and equipment, an impairment of long-lived assets on the consolidated statement of operations was recorded for construction-in-progress related to a deposit associated with a terminated agreement.

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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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