XML 41 R89.htm IDEA: XBRL DOCUMENT
v3.20.1

Adjusted earnings before interest, tax, depreciation and amortisation (Adjusted EBITDA) (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2019
Text block [abstract] |
Summary of Reconciliation of Adjusted EBITDA to Profit (Loss) | The following tables show the reconciliation of Adjusted EBITDA to profit/(loss) for the years ended December 31, 2019, 2018 and 2017.
|  | 2019 |  |  | 2018 |  |  | 2017 |
Profit/(loss) for the year |  |  | (33,680 | ) |  |  | 33,119 |  |  |  | (30,845 | )
Income tax expense |  |  | 2,335 |  |  |  | 7,429 |  |  |  | 2,886 |
Profit/(loss) before tax |  |  | (31,345 | ) |  |  | 40,548 |  |  |  | (27,959 | )
Adjustments for: |  |  |  |  |  |  |  |  |  |  |  |
- Net finance income/(costs) |  |  | 9,868 |  |  |  | (66,296 | ) |  |  | 4,004 |
- Share of profit/(loss) equity-method investees |  |  | (1,011 | ) |  |  | 290 |  |  |  | — |
- Depreciation |  |  | 24,196 |  |  |  | 10,154 |  |  |  | 10,861 |
- Amortisation |  |  | 917 |  |  |  | 910 |  |  |  | 1,569 |
- Government grants |  |  | (1,626 | ) |  |  | (1,061 | ) |  |  | (1,068 | )
Adjusted EBITDA |  |  | 999 |  |  |  | (15,455 | ) |  |  | (12,593 | )

X
- Definition The disclosure of reconciliation of consolidated adjusted EBITDA. + References No definition available. + Details
Name: | ntz_DisclosureOfReconciliationOfConsolidatedAdjustedEBITDAExplanatory
Namespace Prefix: | ntz_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Text block [abstract] + References No definition available. + Details
Name: | ntz_TextBlockAbstract
Namespace Prefix: | ntz_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration