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Note 26 - Fair Value of Financial Instruments - Schedule of Fair Value Measurement Inputs Level 3 (Details) - EUR (€) € in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017
March 2012 Investor Warrants [member] |  |  |
Balance |  |  | € 640
Warrants forfeited (see note 21)(1) | [1] |  | (489)
Warrants exercises (see note 21) (1) | [1] |  | (136)
FV adjustments (see note 21) (1) | [1] |  |
USD/EUR exchange impact(2) | [2] |  | (16)
Balance |  |  |
March 2012 Placement Agent Warrants [Member] |  |  |
Balance |  | 328 | 1,118
Warrants forfeited (see note 21)(1) | [1] |  |
Warrants exercises (see note 21) (1) | [1] |  |
FV adjustments (see note 21) (1) | [1] | (345) | (656)
USD/EUR exchange impact(2) | [2] | 17 | (135)
Balance |  |  | 328
May 2013 Investor Warrants [Member] |  |  |
Balance |  | 512 | 2,162
Warrants forfeited (see note 21)(1) | [1] |  |
Warrants exercises (see note 21) (1) | [1] |  |
FV adjustments (see note 21) (1) | [1] | (544) | (1,388)
USD/EUR exchange impact(2) | [2] | 32 | (262)
Balance |  |  | 512
May 2013 Placement Agent Warrants [Member] |  |  |
Balance |  | 840 | 3,921
Warrants forfeited (see note 21)(1) | [1] |  | (489)
Warrants exercises (see note 21) (1) | [1] |  | (136)
FV adjustments (see note 21) (1) | [1] | (889) | (2,044)
USD/EUR exchange impact(2) | [2] | 49 | (412)
Balance |  |  | € 840
[1] | Reported in the Consolidated Statement of Income in line "Financial (expenses) income net"
[2] | Reported in the Consolidated Statement of Income in line "Foreign currency exchange gain (loss), net"

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- Definition Amount of forfeiture of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References No definition available. + Details
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- Definition Amount of gain (loss) recognized in income from liability measured at fair value on recurring basis using unobservable input (level 3). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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- Definition Amount of gain (loss) recognized in other comprehensive income (OCI) from liability measured at fair value on recurring basis using unobservable input (level 3). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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- Definition Amount of settlements of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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- Definition Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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