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Property and Equipment (Tables)
3 Months Ended
Mar. 31, 2020
Property Plant And Equipment [Abstract]  
Schedule of Property and Equipment

Depreciation and amortization of property and equipment is calculated on the straight-line method based on estimated useful lives of six to ten years for tenant improvements and three to fifteen years for all other property and equipment. Property and equipment consist of the following (in thousands):

 

 

March 31, 2020

 

 

December 31, 2019

 

Computers, software, and equipment

 

$

572

 

 

$

572

 

Furniture, fixtures, and equipment

 

 

299

 

 

 

299

 

Manufacturing and testing equipment

 

 

3,462

 

 

 

3,444

 

Equipment construction in process

 

 

136

 

 

 

18

 

Leasehold improvements

 

 

911

 

 

 

911

 

 

 

 

5,380

 

 

 

5,244

 

Less accumulated depreciation

 

 

(3,240

)

 

 

(3,118

)

 

 

$

2,140

 

 

$

2,126