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Investments (Tables)

6 Months Ended

Oct. 30, 2021

Investments

Schedule of investments

​

​	​	​	​	​	​	​	​
​	​	October 30,		​	April 30,		​
​		2021			2021
Short-term investments:	​	​	​	​	​	​	​
Available-for-sale securities:	​	​	​	​	​	​	​
Municipal securities	​	​	6,311	​	​	22,245	​
U.S. government securities	​	​	—	​	​	4,009	​
Corporate bonds	​	​	—	​	​	5,717	​
Total short-term investments	​	$	6,311	​	$	31,971	​
Long-term investments:	​	​	​	​	​	​	​
Available-for-sale securities:	​	​	​	​	​	​	​
Municipal securities	​	​	—	​	​	988	​
U.S. government securities	​	​	—	​	​	4,000	​
Total long-term available-for-sale investments	​		—	​		4,988	​
Equity method investments	​	​	​	​	​	​	​
Investment in limited partnership fund	​		11,271	​		7,168	​
Total equity method investments	​		11,271	​		7,168	​
Total long-term investments	​	$	11,271	​	$	12,156	​

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

The following table is a summary of the activity related to the available-for-sale investments recorded in short-term and long-term investments as of October 30, 2021 and April 30, 2021, respectively (in thousands):

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​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

October 30, 2021

​

​

​

​

​

Gross

Gross

​

​

​

​

Amortized

​

Unrealized

​

Unrealized

​

Fair

​

​

​

​

Cost

​

Gains

​

Losses

​

Value

​

​

Municipal securities

​

$

6,309

​

$

2

​

$

—

​

$

6,311

​

​

Total available-for-sale investments

​

$

6,309

​

$

2

​

$

—

​

$

6,311

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

April 30, 2021

​

​

​

​

​

​

Gross

​

Gross

​

​

​

​

​

​

Amortized

​

Unrealized

​

Unrealized

​

Fair

​

​

Cost

Gains

​

Losses

Value

Municipal securities

$

23,227

​

$

8

​

$

(2)

​

$

23,233

​

U.S. government securities

​

8,008

​

​

1

​

​

—

​

​

8,009

​

Corporate bonds

​

5,718

​

​

—

​

​

(1)

​

​

5,717

​

Total available-for-sale investments

$

36,953

$

9

​

$

(3)

$

36,959

​

Schedule of amortized cost and fair value of the available-for-sale debt securities by contractual maturity

The amortized cost and fair value of the available-for-sale debt securities by contractual maturity at October 30, 2021 were as follows (in thousands):

​

​	​	​	​	​	​	​	​
​		Cost			Fair Value
Due within one year	​	$	6,309	​	$	6,311	​
Due after one year through five years	​		—	​		—	​
Total	​	$	6,309	​	$	6,311	​

X

- Definition

Tabular disclosure of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-URI http://asc.fasb.org/topic&trid=2196928

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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 http://asc.fasb.org/extlink&oid=123583765&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 http://asc.fasb.org/extlink&oid=123583765&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 http://asc.fasb.org/extlink&oid=123583765&loc=SL75117539-209714

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- Definition

Tabular disclosure of the summary of investment holdings.

+ 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 http://asc.fasb.org/extlink&oid=122147990&loc=d3e611197-123010

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