Cash and Cash Equivalents (Details) - EUR (€) € in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Cash and Cash Equivalents.
Cash at banks	€ 111,950	€ 105,580
Total cash and cash equivalents	€ 111,950	€ 105,580	€ 48,099	€ 59,200

The amount of cash on hand and demand deposits, along with short-term, highly liquid investments that are readily convertible to known amounts of cash and that are subject to an insignificant risk of changes in value. [Refer: Cash; Cash equivalents]

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