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Property and Equipment, net
 12 Months Ended
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.