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CASH, CASH EQUIVALENTS, RESTRICTED CASH AND SHORT-TERM INVESTMENTS | 6 Months Ended
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Mar. 28, 2020
Cash and Cash Equivalents [Abstract] |
CASH AND CASH EQUIVALENTS | CASH, CASH EQUIVALENTS, AND SHORT-TERM INVESTMENTS Cash equivalents consist of instruments with remaining maturities of three months or less at the date of purchase. In general, these investments are free of trading restrictions. Cash, cash equivalents, and short-term investments consisted of the following as of March 28, 2020:
(in thousands) | Amortized Cost |  | Unrealized Gains |  | Unrealized Losses |  | Estimated Fair Value
Current assets: |  |  |  |  |  |  |
Cash | $ | 225,849 |  |  | $ | — |  |  | $ | — |  |  | $ | 225,849 |
Cash equivalents: |  |  |  |  |  |  |
Money market funds (1) | 166,451 |  |  | — |  |  | — |  |  | 166,451 |
Time deposits (2) | 7 |  |  | — |  |  | — |  |  | 7 |
Total cash and cash equivalents | $ | 392,307 |  |  | $ | — |  |  | $ | — |  |  | $ | 392,307 |
Short-term investments (2): |  |  |  |  |  |  |
Time deposits | 149,000 |  |  | — |  |  | — |  |  | 149,000 |
Deposits (3) | 99,000 |  |  | — |  |  | — |  |  | 99,000 |
Total short-term investments | $ | 248,000 |  |  | $ | — |  |  | $ | — |  |  | $ | 248,000 |
Total cash, cash equivalents, and short-term investments | $ | 640,307 |  |  | $ | — |  |  | $ | — |  |  | $ | 640,307 |
(1) | The fair value was determined using unadjusted prices in active, accessible markets for identical assets, and as such they were classified as Level 1 assets in the fair value hierarchy.
(2) | Fair value approximates cost basis.
(3) | Represents deposits that require a notice period of three months for withdrawal.
Cash, cash equivalents, restricted cash and short-term investments consisted of the following as of September 28, 2019:
(in thousands) | Amortized Cost |  | Unrealized Gains |  | Unrealized Losses |  | Estimated Fair Value
Current assets: |  |  |  |  |  |  |
Cash | $ | 201,005 |  |  | $ | — |  |  | $ | — |  |  | $ | 201,005 |
Cash equivalents: |  |  |  |  |  |  |
Money market funds (1) | 163,172 |  |  | — |  |  | — |  |  | 163,172 |
Time deposits (2) | 7 |  |  | — |  |  | — |  |  | 7 |
Total cash and cash equivalents | $ | 364,184 |  |  | $ | — |  |  | $ | — |  |  | $ | 364,184 |
Short-term investments (2): |  |  |  |  |  |  |
Time deposits | 130,000 |  |  | — |  |  | — |  |  | 130,000 |
Deposits (3) | 99,000 |  |  | — |  |  | — |  |  | 99,000 |
Total short-term investments | $ | 229,000 |  |  | $ | — |  |  | $ | — |  |  | $ | 229,000 |
Total cash, cash equivalents, restricted cash and short-term investments | $ | 593,184 |  |  | $ | — |  |  | $ | — |  |  | $ | 593,184 |
(1) | The fair value was determined using unadjusted prices in active, accessible markets for identical assets, and as such they were classified as Level 1 assets in the fair value hierarchy.
(2) | Fair value approximates cost basis.
(3) Represents deposits that require a notice period of three months for withdrawal.

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- Definition The entire disclosure for cash and cash equivalent footnotes, which may include the types of deposits and money market instruments, applicable carrying amounts, restricted amounts and compensating balance arrangements. Cash and equivalents include: (1) currency on hand (2) demand deposits with banks or financial institutions (3) other kinds of accounts that have the general characteristics of demand deposits (4) short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Generally, only investments maturing within three months from the date of acquisition qualify. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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