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Equipment and Improvements
 12 Months Ended
Dec. 31, 2021
Property Plant And Equipment [Abstract]  
Equipment and Improvements

3. Equipment and Improvements

Equipment and improvements consist of the following (in thousands):

 

 

 

December 31,

 

 

 

2021

 

 

2020

 

Computer hardware, software, and equipment

 

$

10,531

 

 

$

9,814

 

Leasehold improvements

 

 

3,378

 

 

 

2,959

 

Office furniture and fixtures

 

 

803

 

 

 

714

 

Construction in progress

 

 

13

 

 

 

24

 

 

 

 

14,725

 

 

 

13,511

 

Less accumulated depreciation and amortization

 

 

(12,027

)

 

 

(11,341

)

Equipment and improvements, net

 

$

2,698

 

 

$

2,170

 

 

Depreciation and amortization expense on equipment and improvements was $1.2 million and $0.7 million for the years ended December 31, 2021 and 2020, respectively.