XML 227 R217.htm IDEA: XBRL DOCUMENT
v3.19.1

Explanation of the Effects of Transition to International Financial Reporting Standards - Summary of Effects of IFRS Adjustments on Net Exchange Rate Gains (Losses) (Detail) - EUR (€) € in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Disclosure of comparative information prepared under previous GAAP [line items] |  |  |
Gains losses on exchange differences on translation before tax | € (3,914) | € 1,033 | [1]
Previous GAAP [member] |  |  |
Disclosure of comparative information prepared under previous GAAP [line items] |  |  |
Gains losses on exchange differences on translation before tax |  | 3,252 |
Effect of transition to IFRSs [member] |  |  |
Disclosure of comparative information prepared under previous GAAP [line items] |  |  |
Gains losses on exchange differences on translation before tax |  | (2,219) |
Functional currency adjustment [member] | Effect of transition to IFRSs [member] |  |  |
Disclosure of comparative information prepared under previous GAAP [line items] |  |  |
Gains losses on exchange differences on translation before tax |  | € (2,219) |
[1] | The Group has initially applied IFRS 9 as at January 1, 2018. Under the transition method chosen, comparative information has not been restated except for separately presenting impairment losses on trade receivables. See note 5.

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

X
- Definition The gains (losses) recognised in other comprehensive income on exchange differences on the translation of financial statements of foreign operations, before tax. [Refer: Other comprehensive income] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 91 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_91_b&doctype=Standard -URIDate 2018-03-16 + Details
Name: | ifrs-full_GainsLossesOnExchangeDifferencesOnTranslationBeforeTax
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | ifrs-full_FinancialEffectOfTransitionFromPreviousGAAPToIFRSsAxis=ifrs-full_PreviousGAAPMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_FinancialEffectOfTransitionFromPreviousGAAPToIFRSsAxis=ifrs-full_EffectOfTransitionToIFRSsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ntz_IncomeStatementLocation1Axis=ntz_FunctionalCurrencyAdjustmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |