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PROPERTY AND EQUIPMENT
12 Months Ended
Dec. 31, 2020
PROPERTY AND EQUIPMENT  
PROPERTY AND EQUIPMENT

(3)   PROPERTY AND EQUIPMENT

The components of property and equipment are as follows (in thousands):

    

December 31, 2020

    

December 31, 2019

Property and equipment

  

 

  

Office furniture and equipment

$

2,362

$

1,178

Assembly equipment

 

143

 

128

Vehicles

 

198

 

181

Leasehold improvements

 

559

 

500

Sales Rep demo units

361

Leased devices

 

809

 

934

$

4,432

$

2,921

Less accumulated depreciation

 

(2,507)

 

(2,063)

$

1,925

$

858

The Company monitors devices out on lease for potential loss and places an estimated reserve on the net book value based on an analysis of the number of units of which are still with patients for which the Company cannot determine the current status.

Total depreciation expense related to our purchased property and equipment was $0.7 million and $0.3 million for the years ended December 31, 2020 and 2019, respectively.

Total depreciation expense related to devices out on lease was $0.8 million and $0.5 million for the years ended December 31, 2020 and 2019, respectively. Depreciation  on leased units is reflected on the income statement as cost of revenue.

During the year ended December 31, 2020, the Company began capitalizing product demo units sent to its territory managers to use in the field. The Company monitors these devices for potential losses and places an estimated reserve on the net book value based on an analysis of terminated territory managers that have not yet returned their units.

Total depreciation expense related to demo unit devices out with sales rep was $0.2 million for the year ended December 31, 2020. Deprecation on demo units is reflected on the income statement as sales and marketing expense.