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Investments | 12 Months Ended
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Jan. 26, 2020
Investments [Abstract] |
Investments | Available-for-sale securities The following table summarizes the values of the Company’s available-for-sale securities:
| January 26, 2020 |  | January 27, 2019
(in thousands) | Market Value |  | Adjusted Cost |  | Gross Unrealized Gain |  | Market Value |  | Adjusted Cost |  | Gross Unrealized Gain
Convertible debt | $ | 10,700 |  |  | $ | 7,544 |  |  | $ | 3,156 |  |  | $ | 3,105 |  |  | $ | 3,105 |  |  | $ | — |
Total available-for-sale securities | $ | 10,700 |  |  | $ | 7,544 |  |  | $ | 3,156 |  |  | $ | 3,105 |  |  | $ | 3,105 |  |  | $ | — |
The following table summarizes the maturities of the Company’s available-for-sale securities:
| January 26, 2020
(in thousands) | Market Value |  | Adjusted Cost
Within 1 year | $ | 10,200 |  |  | $ | 7,044 |
After 1 year through 5 years | 500 |  |  | 500 |
Total available-for-sale securities | $ | 10,700 |  |  | $ | 7,544 |
The Company's available-for-sale ("AFS") securities consist of investments in convertible debt instruments issued by privately-held companies. The AFS investments with maturities within one year were included in "Other current assets" and with maturities greater than one year were included in "Other assets" in the Balance Sheets. Additions to the Company's AFS investments during the fiscal year ended January 26, 2020 included a $3.2 million convertible note that has a maturity date of December 15, 2020 and an interest rate of 12%. The Company records its investments in AFS securities at fair market value, which also reflects expected credit losses. During fiscal year 2020, the gross unrealized gain primarily reflects an increase in fair market value on two of our AFS securities based on Level 3 inputs. In addition, the cost of an AFS security was reduced by $0.7 million, reflecting a decrease in fair market value driven by an increase in expected credit losses.

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- Definition The entire disclosure for investments in certain debt and equity securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -URI http://asc.fasb.org/subtopic&trid=2209399 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -URI http://asc.fasb.org/subtopic&trid=2324412 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -URI http://asc.fasb.org/topic&trid=2196928 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 940 -SubTopic 320 -URI http://asc.fasb.org/subtopic&trid=2176304 + Details
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