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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) - EUR (€) € in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Jan. 01, 2019
Warranty term | one to two years |  |  |
Short term investments | € 0 |  |  |
Accounts Receivable, Allowance for Credit Loss, Writeoff | 827 | € 15 |  |
Gain (loss) derivatives | 0 |  |  |
Warranty expense | 266 | 131 | € 433 |
Advertising Expense | 291 | 739 | € 719 |
Operating lease, right of use | € 1,895 | 2,647 |  |
Operating lease, liability |  | € 2,684 |  |
Accounting Standards Update 2016-02 |  |  |  |
Operating lease, right of use |  |  |  | € 3,500
Operating lease, liability |  |  |  | € 3,500
Maximum | Sale and leaseback |  |  |  |
Useful life | 7 years |  |  |

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- Definition Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 720 -SubTopic 35 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6420018&loc=d3e36677-107848 + Details
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- Definition The expense charged against earnings for the period pertaining to standard and extended warranties on the entity's goods and services granted to customers. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph ((c)(3,4)) -URI http://asc.fasb.org/extlink&oid=68068213&loc=d3e12565-110249 + Details
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