XML 59 R192.htm IDEA: XBRL DOCUMENT
v3.20.1

Income Tax Expense - Additional Information (Detail) - EUR (€) € in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Income tax [line items] |  |  |  |
Effective income tax rates | 7.45% | 18.32% | 10.32% |
Income tax payable | € 1,283 | € 880 |  |
Current income tax receivable | € 1,082 | 1,986 |  |
Maximum percentage of permitted tax loss carry forwards can be utilized to off set | 80.00% |  |  |
Deferred tax assets | € 1,974 | 2,027 |  |
Tax on unremitted earnings of subsidiaries [member] |  |  |  |
Income tax [line items] |  |  |  |
Tax effect of unremitted earnings | € 2,626 | € 2,901 |  |
IRAP [member] |  |  |  |
Income tax [line items] |  |  |  |
Applicable tax rate | 4.82% | 4.82% | 4.82% |
Increase in applicable tax rate | 0.92% |  |  |
IRES [member] |  |  |  |
Income tax [line items] |  |  |  |
Applicable tax rate | 24.00% | 24.00% | 24.00% | 27.50%
Tax effect of unremitted earnings | € (430) | € (1,252) | € (1,998) |

X
- Definition The applicable income tax rate. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2019-01-01 -Paragraph 81 -Subparagraph c -Clause ii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=12&code=ifrs-tx-2019-en-r&anchor=para_81_c_ii&doctype=Standard -URIDate 2019-03-27 + Details
Name: | ifrs-full_ApplicableTaxRate
Namespace Prefix: | ifrs-full_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The tax expense (income) divided by the accounting profit. [Refer: Accounting profit] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2019-01-01 -Paragraph 81 -Subparagraph c -Clause ii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=12&code=ifrs-tx-2019-en-r&anchor=para_81_c_ii&doctype=Standard -URIDate 2019-03-27 + Details
Name: | ifrs-full_AverageEffectiveTaxRate
Namespace Prefix: | ifrs-full_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The current amount of current tax assets. [Refer: Current tax assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 54 -Subparagraph n -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_54_n&doctype=Standard -URIDate 2019-03-27 + Details
Name: | ifrs-full_CurrentTaxAssetsCurrent
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of deferred tax assets net of deferred tax liabilities, when the absolute amount of deferred tax assets is greater than the absolute amount of deferred tax liabilities. [Refer: Deferred tax assets; Deferred tax liabilities] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 12 -IssueDate 2019-01-01 -Paragraph 81 -Subparagraph g -Clause i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=12&code=ifrs-tx-2019-en-r&anchor=para_81_g_i&doctype=Standard -URIDate 2019-03-27 + Details
Name: | ifrs-full_NetDeferredTaxAssets
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Income tax debt + References No definition available. + Details
Name: | ntz_IncomeTaxDebt
Namespace Prefix: | ntz_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Income tax [line items] + References No definition available. + Details
Name: | ntz_IncomeTaxLineItems
Namespace Prefix: | ntz_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Increase decrease in applicable tax rate. + References No definition available. + Details
Name: | ntz_IncreaseDecreaseInApplicableTaxRate
Namespace Prefix: | ntz_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Maximum percentage of permitted tax loss carry forwards can be utilized to off set + References No definition available. + Details
Name: | ntz_MaximumPercentageOfPermittedTaxLossCarryForwardsCanBeUtilizedToOffSet
Namespace Prefix: | ntz_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tax effect of unremitted earnings. + References No definition available. + Details
Name: | ntz_TaxEffectOfUnremittedEarnings
Namespace Prefix: | ntz_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | ntz_DeferredIncomeTaxExpenseAxis=ntz_TaxOnUnremittedEarningsOfSubsidiariesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ntz_TaxationInformationAxis=ntz_IRAPMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ntz_TaxationInformationAxis=ntz_IRESMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |