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Marketable Debt Securities | 3 Months Ended
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Nov. 21, 2020
Marketable Debt Securities |
Marketable Debt Securities | Note D – Marketable Debt Securities Marketable debt securities are carried at fair value, with unrealized gains and losses, net of income taxes, recorded in Accumulated other comprehensive loss until realized, and any credit risk related losses are recognized in net income in the period incurred. The Company’s basis for determining the cost of a security sold is the “Specific Identification Model.” The Company’s available-for-sale marketable debt securities consisted of the following: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | November 21, 2020
​ |  | Amortized |  | Gross |  | Gross |  | ​
​ | ​ | Cost | ​ | Unrealized | ​ | Unrealized | ​ | Fair
(in thousands) | ​ | Basis | ​ | Gains | ​ | Losses | ​ | Value
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Corporate debt securities | ​ | $ | 42,192 | ​ | $ | 816 | ​ | $ | — | ​ | $ | 43,008
Government bonds | ​ |  | 75,235 | ​ |  | 968 | ​ |  | (18) | ​ |  | 76,185
Mortgage-backed securities | ​ |  | 6,590 | ​ |  | 68 | ​ |  | (1) | ​ |  | 6,657
Asset-backed securities and other | ​ |  | 15,644 | ​ |  | 131 | ​ |  | (2) | ​ |  | 15,773
​ | ​ | $ | 139,661 | ​ | $ | 1,983 | ​ | $ | (21) | ​ | $ | 141,623
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | August 29, 2020
​ |  | Amortized |  | Gross |  | Gross |  | ​
​ | ​ | Cost | ​ | Unrealized | ​ | Unrealized | ​ | Fair
(in thousands) | ​ | Basis | ​ | Gains | ​ | Losses | ​ | Value
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Corporate debt securities | ​ | $ | 46,652 | ​ | $ | 970 | ​ | $ | (4) | ​ | $ | 47,618
Government bonds | ​ |  | 44,594 | ​ |  | 1,172 | ​ |  | — | ​ |  | 45,766
Mortgage-backed securities | ​ |  | 4,842 | ​ |  | 75 | ​ |  | — | ​ |  | 4,917
Asset-backed securities and other | ​ |  | 48,798 | ​ |  | 143 | ​ |  | (3) | ​ |  | 48,938
​ | ​ | $ | 144,886 | ​ | $ | 2,360 | ​ | $ | (7) | ​ | $ | 147,239
​ The debt securities held at November 21, 2020, had effective maturities ranging from less than one year to approximately three years. At November 21, 2020, the Company held eight securities that are in an unrealized loss position. In evaluating whether the securities are deemed to be impaired on an other than temporary basis, the Company considers factors such as the duration and severity of the loss position, the credit worthiness of the investee, the term to maturity and the intent and ability to hold the investments until maturity or until recovery of fair value. An allowance for credit losses was deemed unnecessary given consideration of the factors above. Included above in total available-for-sale marketable debt securities are $62.3 million of marketable debt securities transferred by the Company’s insurance captive to a trust account to secure its obligations to an insurance company related to future workers’ compensation and casualty losses.

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