Nine months ended September 30, 2022 (unaudited)

Year ended December 31, 2021

Weighted

average

amortization

period (years)

Gross carrying

amount

Accumulated

amortization

Impairment

Net

Gross carrying

amount

Accumulated

amortization

Net

Intangible assets –amortizable:

Intangible assets related to the acquisition of Intrinsix

Customer relationships

5.5

$

3,604

$

874

$

—

$

2,730

$

3,604

$

382

$

3,222

Customer backlog

1.5

421

374

—

47

421

164

257

Patents

5.0

218

58

—

160

218

26

192

Core technologies

3.0

3,329

1,479

—

1,850

3,329

647

2,682

Intangible assets related to the acquisition of Hillcrest Labs business

Customer relationships

4.4

3,518

2,781

—

737

3,518

2,130

1,388

Customer backlog

0.5

72

—

72

—

R&D Tools

7.5

2,475

1,057

—

1,418

2,475

810

1,665

Intangible assets related to Immervision assets acquisition

R&D Tools

6.4

7,063

3,507

3,556

—

7,063

2,679

4,384

Impairment loss (*)

Intangible assets related to an investment in NB-IoT technologies

NB-IoT technologies (**)

7.0

1,961

1,354

—

607

1,961

1,144

817

Total intangible assets

$

22,661

$

11,556

$

3,556

$

7,549

$

22,661

$

8,054

$

14,607