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Schedule of Cash and Cash Equivalents (Details) (EUR €)
In Thousands, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Cash and cash equivalents € 7,041 € 4,900 € 7,369 € 11,590
Short-term investment € 1,036 € 1,572