v3.24.0.1
Investments (Tables)
12 Months Ended
Dec. 31, 2023
Investments  
Schedule of gross unrealized gains and losses, and the amortized cost, allowance for credit losses, and fair value of those investments classified as available-for-sale

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The amortized cost, gross unrealized gains and losses, fair value of those investments classified as available-for-sale, and allowance for credit losses at December 31, 2022 are summarized as follows (in thousands):

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​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

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December 31, 2022

​

Amortized

​

Gross

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Gross

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Fair

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Allowance for

​

Cost

   

Unrealized Gains

   

Unrealized Losses

   

Value

   

Credit Losses

Corporate bonds

$

200,735

​

$

7

​

$

(7,109)

​

$

193,633

​

​

—

U.S. Treasuries

​

1,154,879

​

​

111

​

​

(15,680)

​

​

1,139,310

​

​

—

Total

$

1,355,614

​

$

118

​

$

(22,789)

​

$

1,332,943

​

$

—

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Schedule of investments classified as equity securities

The cost, gross unrealized gains and losses, and fair value of those investments classified as equity securities at December 31, 2022 are summarized as follows (in thousands):

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​

​

​

​

​

​

​

​

​

​

​

​

​

December 31, 2022

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​

​

​

Gross

​

Gross

​

Fair

​

​

Cost

​

Unrealized Gains

​

Unrealized Losses

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Value

Fixed income mutual funds

$

70,257

 

$

—

​

$

(2,620)

​

$

67,637

Exchange traded mutual funds

​

75,999

​

​

—

​

​

(8,800)

​

​

67,199

Total

$

146,256

​

$

—

​

$

(11,420)

​

$

134,836

Schedule of the amortized cost and fair value of investments classified as available-for-sale, by contractual maturity

A summary of the amortized cost and fair value of investments classified as available-for-sale, by contractual maturity, as of December 31, is as follows (in thousands):

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​

​

​

​

​

​

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​

​

​

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​

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​

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​

​

​

December 31, 2023

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December 31, 2022

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​

Amortized

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Fair

​

​

Amortized

​

Fair

Maturity:

​

Cost

​

Value

​

​

Cost

​

Value

Less than 12 months

$

—

 

$

—

​

$

1,045,120

 

$

1,039,333

12 months or greater

 

—

​

 

—

​

 

310,494

​

 

293,610

Total

$

—

​

$

—

​

$

1,355,614

​

$

1,332,943

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Summary of investments under the equity method

As of December 31, 2023 and December 31, 2022, the Company accounted for the following investments in the investee’s common stock under the equity method, which are included in the investments in non-consolidated entities and non-marketable equity securities on the consolidated balance sheets (amounts in thousands):

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As of December 31, 2023

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As of December 31, 2022

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Formation

​

Common Stock

    

Carrying

​

Common Stock

    

Carrying

Investee

​

Date

​

Ownership %

​

Value

​

Ownership %

​

Value

HyVia

​

Q2 2021

​

50%

​

$

(2,068)

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50%

​

$

11,281

AccionaPlug S.L.

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Q4 2021

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50%

​

​

3,198

​

50%

​

​

2,225

Clean H2 Infra Fund

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Q4 2021

​

5%

​

​

13,357

​

5%

​

​

3,922

SK Plug Hyverse

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Q1 2022

​

49%

​

​

41,609

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49%

​

​

8,937

​

​

​

​

​

​

$

56,096

​

​

​

$

26,365

Schedule Of capital commitments

The Company had the following capital commitments related to its equity method investments as of December 31 as follows (in thousands):

​

​

​

​

2024

$

152,672

2025

​

17,300

Total

$

169,972

​