XML 200 R186.htm IDEA: XBRL DOCUMENT
v3.25.1

Financial Instruments - Fair Values and Risk Management - Summary of Information about Credit Risk Exposure on Trade Receivables Using a Provision Matrix (Detail) - EUR (€) € in Thousands | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | --- | ---
Disclosure of credit risk exposure [line items] |  |  |
Total gross carrying amount | € 32,819 | € 33,304 | € 32,819
Gross carrying amount [member] |  |  |
Disclosure of credit risk exposure [line items] |  |  |
Total gross carrying amount | 36,480 | 37,567 | € 36,480
Credit risk [member] | Gross carrying amount [member] |  |  |
Disclosure of credit risk exposure [line items] |  |  |
Trade receivables subject to collective valuation | 1,358 | 1,995 |
Trade receivables subject to specific valuation | 35,122 | 35,572 |
Total gross carrying amount | 36,480 | 37,567 |
Expected credit loss | 29 | 89 |
Less than Thirty days [member] |  |  |
Disclosure of credit risk exposure [line items] |  |  |
Total gross carrying amount | 3,945 | 4,707 |
Less than Thirty days [member] | Credit risk [member] | Gross carrying amount [member] |  |  |
Disclosure of credit risk exposure [line items] |  |  |
Trade receivables subject to collective valuation | € 1,279 | € 1,798 |
Default rate | 0.65% | 0.86% |
Expected credit loss | € 8 | € 15 |
Thirty to sixty days [member] |  |  |
Disclosure of credit risk exposure [line items] |  |  |
Total gross carrying amount | 746 | 1,053 |
Thirty to sixty days [member] | Credit risk [member] | Gross carrying amount [member] |  |  |
Disclosure of credit risk exposure [line items] |  |  |
Trade receivables subject to collective valuation | € 0 | € 83 |
Default rate | 9.60% | 13.06% |
Expected credit loss | € 0 | € 11 |
Sixty One Days To Ninety Days [member] |  |  |
Disclosure of credit risk exposure [line items] |  |  |
Total gross carrying amount | 582 | 429 |
Sixty One Days To Ninety Days [member] | Credit risk [member] | Gross carrying amount [member] |  |  |
Disclosure of credit risk exposure [line items] |  |  |
Trade receivables subject to collective valuation | € 79 | € 78 |
Default rate | 26.31% | 37.78% |
Expected credit loss | € 21 | € 29 |
Past Due Greater Than Ninety Days [member] | Credit risk [member] | Gross carrying amount [member] |  |  |
Disclosure of credit risk exposure [line items] |  |  |
Trade receivables subject to collective valuation | € 0 | € 36 |
Default rate | 58.83% | 95.31% |
Expected credit loss | € 0 | € 34 |

X
- Definition The amount of current trade receivables. [Refer: Trade receivables] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 68 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_68&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 78 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_78_b&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_CurrentTradeReceivables
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
Name: | ifrs-full_DisclosureOfCreditRiskExposureLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Default rate. + References No definition available. + Details
Name: | ntz_DefaultRate
Namespace Prefix: | ntz_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Expected credit losses. + References No definition available. + Details
Name: | ntz_ExpectedCreditLosses
Namespace Prefix: | ntz_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Trade receivables subject to collective valuation + References No definition available. + Details
Name: | ntz_TradeReceivablesSubjectToCollectiveValuation
Namespace Prefix: | ntz_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Trade receivables subject to specific valuation. + References No definition available. + Details
Name: | ntz_TradeReceivablesSubjectToSpecificValuation
Namespace Prefix: | ntz_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis=ifrs-full_GrossCarryingAmountMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_TypesOfRisksAxis=ifrs-full_CreditRiskMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_PastDueStatusAxis=ntz_LessThanThirtyDaysMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_PastDueStatusAxis=ntz_ThirtyToSixtyDaysMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_PastDueStatusAxis=ntz_SixtyOneDaysToNinetyDaysMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_PastDueStatusAxis=ntz_PastDueGreaterThanNinetyDaysMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |