Gross Unrealized

Losses

Amortized

Less than

Greater than

Estimated

September 30, 2022

Cost

Gains

One Year

One Year

Fair Value

Short-term investments:

Available-for-sale securities:

Corporate debt securities

$

135,140

$

—

$

(1,860

)

$

(712

)

$

132,568

U.S. government and agency debt securities

135,444

4

(823

)

(569

)

134,056

Non-U.S. government debt securities

50,148

—

(311

)

(236

)

49,601

 Total short-term investments

320,732

4

(2,994

)

(1,517

)

316,225

Long-term investments:

Available-for-sale securities:

Corporate debt securities

87,038

—

(2,757

)

(606

)

83,675

U.S. government and agency debt securities

73,109

—

(1,768

)

(1,374

)

69,967

Non-U.S. government debt securities

12,021

—

—

(555

)

11,466

172,168

—

(4,525

)

(2,535

)

165,108

Held-to-maturity securities:

Certificates of deposit

1,820

—

—

—

1,820

Total long-term investments

173,988

—

(4,525

)

(2,535

)

166,928

Total investments

$

494,720

$

4

$

(7,519

)

$

(4,052

)

$

483,153

December 31, 2021

Short-term investments:

Available-for-sale securities:

Corporate debt securities

$

85,201

$

177

$

(39

)

$

—

$

85,339

U.S. government and agency debt securities

45,349

35

(24

)

—

45,360

Non-U.S. government debt securities

68,046

75

(53

)

—

68,068

 Total short-term investments

198,596

287

(116

)

—

198,767

Long-term investments:

Available-for-sale securities:

Corporate debt securities

111,793

—

(654

)

—

111,139

U.S. government and agency debt securities

81,296

—

(517

)

—

80,779

Non-U.S. government debt securities

35,902

—

(210

)

—

35,692

228,991

—

(1,381

)

—

227,610

Held-to-maturity securities:

Certificates of deposit

1,820

—

—

—

1,820

Total long-term investments

230,811

—

(1,381

)

—

229,430

Total investments

$

429,407

$

287

$

(1,497

)

$

—

$

428,197