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Property and Equipment
 12 Months Ended
Dec. 31, 2019
Property and Equipment  
Property and Equipment

5. Property and Equipment

 

Major classifications of property and equipment and estimated useful lives were as follows:

 

 

 

Estimated useful lives

 

As of December 31,

 

 

 

in years

 

2019

 

 

2018

 

Office furniture and equipment

 

 

3

to 

10 

 

$

4,979

 

 

$

5,041

 

Leasehold improvements

 

 

2

to

10 

 

 

1,609

 

 

 

1,570

 

Vehicles

 

 

5

to 

10 

 

 

206

  

 

 

206

 

Manufacturing and test equipment

 

 

2

to 

10 

 

 

2,779

 

 

 

2,633

 

 

 

 

 

 

 

 

 

9,573

 

 

 

9,450

 

Accumulated depreciation and amortization

 

 

 

 

 

 

 

(8,529

 )

 

 

(8,062

)

Property and equipment, net

 

 

 

 

 

 

$

1,044

 

 

$

1,388

 

 

Depreciation expense on property and equipment for the years ended December 31, 2019 and 2018 was $512 and $497, respectively. During the twelve months ended December 31, 2019 we recorded a loss of $34 for the disposal of fixed assets consisting of software, manufacturing equipment and furniture.