Note 22 - Commitments and Contingencies (Details Textual) - EUR (€) € in Thousands	1 Months Ended	12 Months Ended
Dec. 31, 2014	Dec. 31, 2015
Mark Eaton Lawsuit [Member]
Litigation Settlement, Expense	€ 206	€ 171

Amount of litigation expense, including but not limited to legal, forensic, accounting, and investigative fees.

No definition available.

Name:	us-gaap_LitigationSettlementExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration