XML 22 R12.htm IDEA: XBRL DOCUMENT
v3.23.3

Marketable Securities | 9 Months Ended
--- | ---
Oct. 31, 2023
Investments, Debt and Equity Securities [Abstract] |
Marketable Securities | 3. Marketable Securities During all periods shown, marketable securities are classified as available-for-sale. The amortized cost, gross unrealized gains (losses) and fair value of available-for-sale securities by major security type and class of security as of October 31, 2023, January 31, 2023 and October 31, 2022 were as follows:
|  | Amortized |  |  | Unrealized |  |  | Unrealized |  |  | Fair |
|  | Cost |  |  | Gains |  |  | (Losses) |  |  | Value |
As of October 31, 2023 |  |  |  |  |  |  |  |  |  |  |  |
Short-term Investments: |  |  |  |  |  |  |  |  |  |  |  |
Corporate bonds |  | $ | 102,766 |  |  | $ | — |  |  | $ | (1,336 | ) |  | $ | 101,430 |
Federal government agencies |  |  | 66,216 |  |  |  | — |  |  |  | (233 | ) |  |  | 65,983 |
Municipal and pre-refunded municipal bonds |  |  | 48,115 |  |  |  | — |  |  |  | (727 | ) |  |  | 47,388 |
Commercial paper |  |  | 20,976 |  |  |  | — |  |  |  | — |  |  |  | 20,976 |
US Treasury securities |  |  | 13,157 |  |  |  | — |  |  |  | (7 | ) |  |  | 13,150 |
Certificates of deposit |  |  | 249 |  |  |  | — |  |  |  | — |  |  |  | 249 |
|  |  | 251,479 |  |  |  | — |  |  |  | (2,303 | ) |  |  | 249,176 |
Long-term Investments: |  |  |  |  |  |  |  |  |  |  |  |
Corporate bonds |  |  | 53,555 |  |  |  | 4 |  |  |  | (1,155 | ) |  |  | 52,404 |
Federal government agencies |  |  | 49,203 |  |  |  | — |  |  |  | (388 | ) |  |  | 48,815 |
Municipal and pre-refunded municipal bonds |  |  | 10,224 |  |  |  | 3 |  |  |  | (136 | ) |  |  | 10,091 |
US Treasury securities |  |  | 7,398 |  |  |  | 1 |  |  |  | (71 | ) |  |  | 7,328 |
Mutual funds, held in rabbi trust |  |  | 13,252 |  |  |  | 147 |  |  |  | (348 | ) |  |  | 13,051 |
Certificates of deposit |  |  | 1,250 |  |  |  | — |  |  |  | — |  |  |  | 1,250 |
|  |  | 134,882 |  |  |  | 155 |  |  |  | (2,098 | ) |  |  | 132,939 |
|  | $ | 386,361 |  |  | $ | 155 |  |  | $ | (4,401 | ) |  | $ | 382,115 |
As of January 31, 2023 |  |  |  |  |  |  |  |  |  |  |  |
Short-term Investments: |  |  |  |  |  |  |  |  |  |  |  |
Corporate bonds |  | $ | 83,184 |  |  | $ | — |  |  | $ | (947 | ) |  | $ | 82,237 |
Federal government agencies |  |  | 6,501 |  |  |  | — |  |  |  | (1 | ) |  |  | 6,500 |
Municipal and pre-refunded municipal bonds |  |  | 48,141 |  |  |  | — |  |  |  | (688 | ) |  |  | 47,453 |
Commercial paper |  |  | 21,636 |  |  |  | — |  |  |  | — |  |  |  | 21,636 |
US Treasury securities |  |  | 23,561 |  |  |  | 1 |  |  |  | (10 | ) |  |  | 23,552 |
|  |  | 183,023 |  |  |  | 1 |  |  |  | (1,646 | ) |  |  | 181,378 |
Long-term Investments: |  |  |  |  |  |  |  |  |  |  |  |
Corporate bonds |  |  | 62,594 |  |  |  | 22 |  |  |  | (3,319 | ) |  |  | 59,297 |
Federal government agencies |  |  | 9,021 |  |  |  | 13 |  |  |  | (2 | ) |  |  | 9,032 |
Municipal and pre-refunded municipal bonds |  |  | 23,437 |  |  |  | 5 |  |  |  | (1,154 | ) |  |  | 22,288 |
Mutual funds, held in rabbi trust |  |  | 13,402 |  |  |  | — |  |  |  | (1,424 | ) |  |  | 11,978 |
Certificates of deposit |  |  | 249 |  |  |  | — |  |  |  | — |  |  |  | 249 |
|  |  | 108,703 |  |  |  | 40 |  |  |  | (5,899 | ) |  |  | 102,844 |
|  | $ | 291,726 |  |  | $ | 41 |  |  | $ | (7,545 | ) |  | $ | 284,222 |
|  | Amortized |  |  | Unrealized |  |  | Unrealized |  |  | Fair |
|  | Cost |  |  | Gains |  |  | (Losses) |  |  | Value |
As of October 31, 2022 |  |  |  |  |  |  |  |  |  |  |  |
Short-term Investments: |  |  |  |  |  |  |  |  |  |  |  |
Corporate bonds |  | $ | 85,788 |  |  | $ | — |  |  | $ | (1,626 | ) |  | $ | 84,162 |
Municipal and pre-refunded municipal bonds |  |  | 58,417 |  |  |  | — |  |  |  | (910 | ) |  |  | 57,507 |
US Treasury securities |  |  | 4,750 |  |  |  | — |  |  |  | (55 | ) |  |  | 4,695 |
|  |  | 148,955 |  |  |  | — |  |  |  | (2,591 | ) |  |  | 146,364 |
Long-term Investments: |  |  |  |  |  |  |  |  |  |  |  |
Corporate bonds |  |  | 61,707 |  |  |  | — |  |  |  | (4,472 | ) |  |  | 57,235 |
Municipal and pre-refunded municipal bonds |  |  | 28,803 |  |  |  | — |  |  |  | (1,801 | ) |  |  | 27,002 |
Mutual funds, held in rabbi trust |  |  | 12,546 |  |  |  | — |  |  |  | (1,786 | ) |  |  | 10,760 |
Certificates of deposit |  |  | 249 |  |  |  | — |  |  |  | — |  |  |  | 249 |
|  |  | 103,305 |  |  |  | — |  |  |  | (8,059 | ) |  |  | 95,246 |
|  | $ | 252,260 |  |  | $ | — |  |  | $ | (10,650 | ) |  | $ | 241,610 |
Proceeds from the sales and maturities of available-for-sale securities were $242,847 and $230,745 for the nine months ended October 31, 2023 and 2022, respectively. The Company included in “Other income (loss), net,” in the Condensed Consolidated Statements of Income, a net realized gain of $2 and a net realized loss of $4 for the three and nine months ended October 31, 2023, respectively, and a net realized loss of $1,131 and $1,465 for the three and nine months ended October 31, 2022, respectively. Amortization of discounts and premiums, net, was a benefit of $1,406 and $2,578 for the three and nine months ended October 31, 2023, respectively, and an expense of $1,037 and $3,919 for the three and nine months ended October 31, 2022, respectively. Amortization of discounts and premiums, net, is included in “Other income (loss), net” in the Condensed Consolidated Statements of Income. Mutual funds represent assets held in an irrevocable rabbi trust for the Company’s Non-qualified Deferred Compensation Plan (“NQDC”). These assets are a source of funds to match the funding obligations to participants in the NQDC but are subject to the Company’s general creditors. The Company elected the fair value option for financial assets for the mutual funds held in the rabbi trust resulting in all unrealized gains and losses being recorded in “Other income (loss), net” in the Condensed Consolidated Statements of Income.

X
- References No definition available. + Details
Name: | us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure for investments in certain debt and equity securities. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//320/tableOfContent Reference 2: 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 3: 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 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6B -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-6B Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-K (SK) -Number 229 -Section 1403 -Paragraph (b) -Publisher SEC Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//946-320/tableOfContent Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 940 -SubTopic 320 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//940-320/tableOfContent Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 320 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//942-320/tableOfContent + Details
Name: | us-gaap_InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration