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Marketable Securities | 3 Months Ended
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Mar. 28, 2020
Investments, Debt and Equity Securities [Abstract] |
Marketable Securities | 3 Marketable Securities The Company’s marketable securities within cash equivalents and investments included in the consolidated balance sheets are detailed as follows (in thousands):
|  | March 28, 2020 |
|  | Amortized |  |  | Unrealized |  |  | Unrealized |  |  | Fair |
|  | Cost |  |  | Gain |  |  | Loss |  |  | Value |
Time deposits |  |  | 3,810 |  |  |  | — |  |  |  | — |  |  |  | 3,810 |
Total |  | $ | 3,810 |  |  | $ | — |  |  | $ | — |  |  | $ | 3,810 |
Amounts included in: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments |  |  | 3,810 |  |  |  | — |  |  |  | — |  |  |  | 3,810 |
Total |  | $ | 3,810 |  |  | $ | — |  |  | $ | — |  |  | $ | 3,810 |
|  | December 31, 2019 |
|  | Amortized |  |  | Unrealized |  |  | Unrealized |  |  | Fair |
|  | Cost |  |  | Gain |  |  | Loss |  |  | Value |
Time deposits |  |  | 1,642 |  |  |  | — |  |  |  | — |  |  |  | 1,642 |
Total |  | $ | 1,642 |  |  | $ | — |  |  | $ | — |  |  | $ | 1,642 |
Amounts included in: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash equivalents |  | $ | 213 |  |  | $ | — |  |  | $ | — |  |  | $ | 213 |
Investments |  |  | 1,429 |  |  |  | — |  |  |  | — |  |  |  | 1,429 |
Total |  | $ | 1,642 |  |  | $ | — |  |  | $ | — |  |  | $ | 1,642 |
The estimated fair value of marketable debt securities by maturity date is as follows (in thousands):
|  | March 28, 2020 |  |  | December 31, 2019 |
Due in one year or less |  | $ | 3,810 |  |  | $ | 1,642 |
Total |  | $ | 3,810 |  |  | $ | 1,642 |

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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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