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Investments (Tables)

12 Months Ended

Apr. 30, 2023

Investments

Schedule of investments

​

​	​	​	​	​	​	​
​	​	April 30,
​		2023			2022
​	​	(In thousands)
Short-term investments:	​	​	​	​	​	​
Available-for-sale securities:	​	​	​	​	​	​
Municipal securities	​	​	—	​	​	19,725
U.S. government securities	​	​	—	​	​	4,991
Total short-term investments	​	$	—	​	$	24,716
Long-term investments:	​	​	​	​	​	​
Available-for-sale securities:	​	​	​	​	​	​
Equity securities and warrants	​	​	4,969	​	​	—
Total long-term available-for-sale securities investments	​		4,969	​		—
Equity method investments	​	​	​	​	​	​
Investments in limited partnership funds	​		18,644	​		15,433
Total equity method investments	​		18,644	​		15,433
Total long-term investments	​	$	23,613	​	$	15,433

Schedule of activity related to available-for-sale investments recorded in short-term

The following table is a summary of the activity related to the available-for-sale debt securities recorded in short-term investments as of April 30, 2022, respectively (in thousands):

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​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Gross

​

Gross

​

​

​

​

​

Amortized

​

Unrealized

​

Unrealized

​

Fair

​

​

​

​

Cost

Gains

​

Losses

Value

​

​

Municipal securities

​

$

19,756

​

$

—

​

$

(31)

​

$

19,725

​

​

U.S. government securities

​

​

4,995

​

​

—

​

​

(4)

​

​

4,991

​

​

Total available-for-sale equity securities

​

$

24,751

​

$

—

​

$

(35)

​

$

24,716

​

​

Schedule of amortized cost, gross unrealized gains, gross unrealized losses, and estimated fair value of available-for-sale investments

​

​	​	​	​
​	​	Year Ended
​		April 30,
​	​	2023
Net loss recognized during the period on equity securities	​	$	(132)
Less: Net loss recognized during the period on equity securities sold during the period	​	​	—
Unrealized loss recognized during the period on equity securities still held at the reporting date	​	$	(132)

X

- Definition

Tabular disclosure of investment in equity security without readily determinable fair value.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 321
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=126980263&loc=SL75117539-209714

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 321
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=126980263&loc=SL75117539-209714

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 321
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126980263&loc=SL75117539-209714

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+ References

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- Definition

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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 320
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-12B)
-URI https://asc.fasb.org/extlink&oid=122147990&loc=d3e611197-123010

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