​

Useful Life

​

​

​

​

​

​

 In Years

​

September 30, 2021

​

December 31, 2020

Tooling and equipment

7 - 15

​

$

13,400

​

$

13,465

Furniture and other equipment

5

​

7,785

​

7,379

Computer software

5

​

1,987

​

2,378

Leasehold improvements

3 - 6

​

3,467

​

3,314

Equipment under capital lease

5

​

192

​

197

​

​

​

​

26,831

​

26,733

Less accumulated depreciation

​

​

​

(19,427)

​

(18,894)

​

​

​

​

$

7,404

​

$

7,839