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INVESTMENTS

12 Months Ended

Dec. 31, 2024

INVESTMENTS.

INVESTMENTS

5.INVESTMENTS

The Company held no short-term or long-term investments at December 31, 2024. The following table summarizes the Company’s investments at December 31, 2023.

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​

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​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Continuous

​

Continuous

​

​

​

​

​

Gross

​

Gross

​

​

​

​

Unrealized

​

Unrealized

​

​

​

​

​

Unrealized

​

Unrealized

​

​

​

​

Loss Position

​

Loss Position

​

​

Amortized

​

Holding

​

Holding

​

Fair

​

less than 12

​

greater than

December 31, 2023

Cost

Gains

Losses

Value

Months

12 Months

Available-for-sale

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​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Short-term:

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Commercial paper

​

$

163,775

​

$

—

​

$

1

​

$

163,774

​

$

1

​

$

—

Certificates of deposit

​

​

15,590

​

​

—

​

​

—

​

​

15,590

​

​

—

​

​

—

Municipal securities

​

361

​

​

—

​

​

—

​

​

361

​

​

—

​

​

—

U.S. government agency securities

​

116,524

​

90

​

66

​

116,548

​

66

​

—

U.S. treasuries

​

​

412,936

​

205

​

1,084

​

412,057

​

1,084

​

—

Corporate bonds

​

​

247,340

​

​

89

​

​

154

​

​

247,275

​

​

154

​

​

—

Long-term:

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

U.S. government agency securities

​

​

23,485

​

​

51

​

​

5

​

​

23,531

​

​

5

​

​

—

U.S. treasuries

​

​

35,896

​

​

79

​

​

8

​

​

35,967

​

​

8

​

​

—

Corporate bonds

​

​

16,903

​

​

32

​

​

2

​

​

16,933

​

​

2

​

​

—

Total

​

$

1,032,810

​

$

546

​

$

1,320

​

$

1,032,036

​

$

1,320

​

$

—

​

During the years ended December 31, 2024, 2023 and 2022, realized gains or losses recognized on the sale of investments were not significant.

The Company’s investments at December 31, 2023 carried investment grade credit ratings.

The Company held no short-term or long-term investments at December 31, 2024. The following table summarizes the underlying contractual maturities of the Company’s investments at December 31, 2023.

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​	​	​	​	​	​	​
​	​	December 31, 2023
​		Amortized Cost			Fair Value
Less than 1 year:	​	​	​	​	​	​
Commercial paper	​	$	163,775	​	$	163,774
Municipal securities	​		361	​		361
U.S. government agency securities	​		116,524	​		116,548
Certificates of deposit	​		15,590	​		15,590
U.S. treasuries	​	​	412,936	​	​	412,057
Corporate bonds	​	​	247,340	​	​	247,275
Due 1 - 10 years:	​	​	​	​	​	​
U.S. treasuries	​	​	35,896	​	​	35,967
U.S. government agency securities	​		23,485	​		23,531
Corporate bonds	​	​	16,903	​	​	16,933
Total	​	$	1,032,810	​	$	1,032,036

​

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The entire disclosure for investments in certain debt and equity securities.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 940
-SubTopic 320
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org/940-320/tableOfContent

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-K (SK)
-Number 229
-Section 1403
-Paragraph b
-Publisher SEC

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org/320/tableOfContent

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 10
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481800/320-10-50-10

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6B
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-6B

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6B
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-6B

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-SubTopic 320
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org/942-320/tableOfContent

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