XML 52 R32.htm IDEA: XBRL DOCUMENT
v3.21.1

Investments (Tables) | 12 Months Ended
--- | ---
Jan. 31, 2021
Investments [Abstract] |
Summary of available-for-sale securities | The following table summarizes the values of the Company’s available-for-sale securities:
| January 31, 2021 |  | January 26, 2020
(in thousands) | Fair Value |  | Amortized Cost |  | Gross Unrealized Gain/(Loss) |  | Fair Value |  | Amortized Cost |  | Gross Unrealized Gain/(Loss)
Convertible debt | $ | 11,989 |  |  | $ | 13,244 |  |  | $ | (1,255) |  |  | $ | 10,700 |  |  | $ | 8,715 |  |  | $ | 1,985 |
Total available-for-sale securities | $ | 11,989 |  |  | $ | 13,244 |  |  | $ | (1,255) |  |  | $ | 10,700 |  |  | $ | 8,715 |  |  | $ | 1,985 |
Schedule of available-for-sale securities, classified by maturity period | The following table summarizes the maturities of the Company’s available-for-sale securities:
| January 31, 2021 |  |
(in thousands) | Fair Value |  | Amortized Cost |  |  |  |
Within 1 year | $ | 10,954 |  |  | $ | 11,700 |  |  |  |  |
After 1 year through 5 years | 1,035 |  |  | 1,544 |  |  |  |  |
Total available-for-sale securities | $ | 11,989 |  |  | $ | 13,244 |  |  |  |  |

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

X
- Definition Tabular disclosure of maturities of an entity's investments as well as any other information pertinent to the investments. + References No definition available. + Details
Name: | us-gaap_InvestmentsClassifiedByContractualMaturityDateTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the reconciliation of available-for-sale securities from cost basis to fair value. + References No definition available. + Details
Name: | us-gaap_ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration