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Investments Available for Sale (Tables)
 9 Months Ended
Sep. 29, 2023
Investments, Debt and Equity Securities [Abstract]  
Summary of Investments Available for Sale and Related Fair Value Measurement Investments available for sale (“AFS”) and the related fair value measurement consisted of the following (dollars in thousands):

 

 

 

September 29, 2023

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fair Value Measurements

 

 

 

Amortized Cost

 

 

Unrealized Gains

 

 

Unrealized Losses

 

 

Estimated Fair Value

 

 

Level 1

 

 

Level 2

 

Commercial paper

 

$

17,102

 

 

$

1

 

 

$

(5

)

 

$

17,098

 

 

$

—

 

 

$

17,098

 

Certificates of deposit

 

 

4,080

 

 

 

1

 

 

 

(2

)

 

 

4,079

 

 

 

—

 

 

 

4,079

 

U.S. Treasury securities

 

 

24,828

 

 

 

—

 

 

 

(188

)

 

 

24,640

 

 

 

24,640

 

 

 

—

 

U.S. agency securities

 

 

9,771

 

 

 

—

 

 

 

(21

)

 

 

9,750

 

 

 

—

 

 

 

9,750

 

Corporate debt securities

 

 

18,812

 

 

 

2

 

 

 

(73

)

 

 

18,741

 

 

 

—

 

 

 

18,741

 

Total investments AFS

 

$

74,593

 

 

$

4

 

 

$

(289

)

 

$

74,308

 

 

$

24,640

 

 

$

49,668

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

December 30, 2022

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fair Value Measurements

 

 

 

Amortized Cost

 

 

Unrealized Gains

 

 

Unrealized Losses

 

 

Estimated Fair Value

 

 

Level 1

 

 

Level 2

 

Commercial paper

 

$

44,054

 

 

$

11

 

 

$

(62

)

 

$

44,003

 

 

$

—

 

 

$

44,003

 

Certificates of deposit

 

 

17,355

 

 

 

4

 

 

 

(75

)

 

 

17,284

 

 

 

—

 

 

 

17,284

 

U.S. Treasury securities

 

 

21,847

 

 

 

3

 

 

 

(15

)

 

 

21,835

 

 

 

21,835

 

 

 

—

 

U.S. agency securities

 

 

10,688

 

 

 

16

 

 

 

(3

)

 

 

10,701

 

 

 

—

 

 

 

10,701

 

Corporate debt securities

 

 

45,522

 

 

 

4

 

 

 

(288

)

 

 

45,238

 

 

 

—

 

 

 

45,238

 

Total investments AFS

 

$

139,466

 

 

$

38

 

 

$

(443

)

 

$

139,061

 

 

$

21,835

 

 

$

117,226

 
Summary of Fair Value of Investments Available for Sale by Contractual Maturity

The following table shows the fair value of investments AFS by contractual maturity (dollars in thousands):

 

 

 

As of September 29, 2023

 

 

 

Within one year

 

 

After one year through five years

 

 

 

Total

 

Commercial paper

 

$

17,098

 

 

$

—

 

 

 

$

17,098

 

Certificates of deposit

 

 

4,079

 

 

 

—

 

 

 

 

4,079

 

U.S. Treasury securities

 

 

14,855

 

 

 

9,785

 

 

 

 

24,640

 

U.S. agency securities

 

 

9,354

 

 

 

396

 

 

 

 

9,750

 

Corporate debt securities

 

 

15,295

 

 

 

3,446

 

 

 

 

18,741

 

Total investments AFS

 

$

60,681

 

 

$

13,627

 

 

 

$

74,308